All tools

264 free tools for PDFs, images, text, code, calculations and websites. Start typing to filter instantly.

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PDF tools

22 tools

Merge PDF

Combine several PDF files into one document, in exactly the order you choose.

Split PDF

Split a PDF into separate files by page range, or break it into single pages.

Compress PDF

Shrink PDF file size for email and uploads while keeping text sharp and images readable.

PDF to Word

Convert a PDF into an editable Word document (DOCX) that keeps its layout and formatting.

PDF to Excel

Pull bordered tables out of a PDF into an Excel spreadsheet. Pages without a table become rows of text.

PDF to PowerPoint

Turn each page of a PDF into a PowerPoint slide, up to 40 pages.

HTML to PDF

Convert an HTML file into a PDF. Headings, text and tables in the file are kept.

Word to PDF

Convert DOC and DOCX documents to PDF with fonts, tables and layout preserved.

Excel to PDF

Turn XLS, XLSX and CSV spreadsheets into clean, printable PDF files.

PowerPoint to PDF

Convert PPT and PPTX presentations to PDF so slides look the same everywhere.

PDF to JPG

Turn each page of a PDF into a high-quality JPG image.

PDF to PNG

Export PDF pages as lossless PNG images with crisp text.

JPG to PDF

Convert JPG, PNG and WebP images into a single PDF, one image per page.

Rotate PDF

Rotate every page, or just the pages you pick, and save the corrected PDF.

Organize PDF

Reorder, rotate and delete PDF pages visually with page thumbnails.

Delete PDF Pages

Remove unwanted pages from a PDF and download the cleaned-up file.

Extract PDF Pages

Pull selected pages out of a PDF into a new, smaller document.

Add Page Numbers

Number the pages of a PDF, choosing position, starting number and format.

Watermark PDF

Stamp text such as CONFIDENTIAL or DRAFT across the pages of a PDF.

Protect PDF

Add a password to a PDF with strong AES-256 encryption.

Unlock PDF

Remove the password from a PDF you are allowed to open.

PDF to Text

Extract the plain text from a PDF to copy, search or reuse.

Image tools

27 tools

AVIF to JPG

Convert AVIF images to JPG in batches, choose quality and a transparency background, and download files or a ZIP without uploading photos.

Watermark Image

Add a text or logo watermark to photos in batches. Preview position, opacity and a repeated pattern, then save PNG or JPG files locally.

Image Compressor

Make JPG, PNG and WebP images smaller with a live preview of quality and size.

Image Resizer

Resize images by pixels or percentage, keeping the aspect ratio if you like.

Image Converter

Convert images between JPG, PNG and WebP formats in seconds.

PNG to JPG

Convert PNG images to JPG, with a background colour for transparent areas.

JPG to PNG

Convert JPG photos to lossless PNG images.

WebP to JPG

Convert WebP images to widely supported JPG files.

Image to WebP

Convert PNG or JPG images to modern, lightweight WebP files.

HEIC to JPG

Convert iPhone HEIC photos to JPG so they open anywhere.

Crop Image

Crop an image freely or to a fixed aspect ratio such as 1:1 or 16:9.

Rotate & Flip Image

Rotate an image in 90° steps or flip it horizontally and vertically.

Image to Text (OCR)

Extract text from screenshots, photos and scanned documents.

Image to Base64

Encode an image as a Base64 data URI for CSS, HTML or JSON.

Favicon Generator

Create favicon PNGs in every common size, plus the HTML tags to use them.

SVG to PNG

Render an SVG file to a PNG image at the size you need.

PNG to ICO

Convert PNG, JPG or WebP images into a real ICO file with multiple icon sizes and transparent padding.

Blur Image

Blur a whole image or a selected rectangle with adjustable strength, then save the result as PNG.

Compress Image to KB

Reduce JPG, PNG or WebP images below a chosen file-size limit, with measured output sizes.

Resize Image in CM

Set centimetres and DPI to calculate pixel dimensions, then resize without stretching.

Image Size Checker

Check image dimensions, file size and format against your upload requirements.

Signature Resizer

Fit a signature into exact pixel dimensions and a maximum JPG file size.

Contact Sheet Maker

Arrange up to 12 photos into one JPG grid with optional filename captions.

WebP to PNG Converter

Convert WebP images to PNG, keep transparent areas and download a batch as a ZIP.

HEIC to PNG Converter

Turn HEIC or HEIF photos into PNG files in your browser, one photo or a whole batch.

Meme Generator

Add classic top and bottom captions to your own picture and download the meme as a PNG.

Image Color Extractor

Pull the main colours from any image and copy them as hex codes or CSS variables.

SEO tools

50 tools

Backlink Maker

Create a ready-to-use HTML link snippet.

XML Sitemap Generator

Turn a list of URLs into a valid XML sitemap.

XML Sitemap Validator

Validate sitemap XML, count URLs, and spot malformed or unsafe entries.

Link Analyzer

Inspect links from pasted HTML and classify them.

Keyword CPC Calculator

Estimate campaign cost from clicks and CPC.

Keyword Search Review

See a best-effort domain match in DuckDuckGo results; open Google and Bing searches for manual review. No rank history is tracked.

Backlink Report Parser

Organize URLs or anchor links copied from a backlink report; this tool does not discover or verify backlinks.

Google PageSpeed Insights Checker

Run a mobile PageSpeed performance audit for a public URL.

Safe Browsing Review

Check the HTTPS response and open Google’s public Safe Browsing lookup. GigaTools does not query its malware database.

Website Setup Signals

Review DNS, HTTPS, response time, metadata, robots.txt, and sitemap signals. This is not MozRank or a link-authority score.

Site Search Preview

Open Google and Bing site: queries for a rough public signal; confirm your own URLs in Search Console.

Blacklist Lookup

Prepare a domain for reputation-list review.

Link Price Calculator

Estimate a sponsored link price from reach inputs.

Wayback Snapshot Lookup

Find an available Internet Archive snapshot. Google’s cached-page feature is no longer available.

Search Engine Spider Simulator

Preview the text a basic crawler can read from HTML.

Keywords Suggestion Tool

Expand a seed keyword into useful variations.

Domain Setup Signals

Review public DNS, HTTPS, response, metadata, robots.txt, and sitemap signals; no Domain Authority score is queried.

URL Setup Signals

Review public website setup signals for a URL; this tool does not query Page Authority or a link index.

Page Speed Checker

Open a performance audit for a public URL.

Website Launch Audit

Check the public signals that shape a confident website launch.

SERP Snippet Preview

Preview how a page may look in Google results.

Open Graph Generator

Generate Open Graph and Twitter card tags.

UTM Link Builder

Build campaign URLs with UTM parameters.

HTTP Response Header Parser

Read pasted HTTP response blocks, preserve repeated fields and review status, Location and X-Robots-Tag without fetching a website.

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Open Graph Checker

Check Open Graph properties in pasted HTML and preview the title and description without fetching pages or images.

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Hreflang Checker

Inspect pasted HTML hreflang annotations for code syntax, duplicate languages, absolute URLs and self-reference.

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Redirect Map Checker

Find chains, loops and duplicate sources in a two-column redirect CSV before a migration, entirely in your browser.

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Robots.txt Tester

Test pasted Allow and Disallow rules against crawler tokens and URL paths, with winning rule lines and no live website requests.

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XML Sitemap Splitter

Split a pasted or local XML urlset into child sitemaps and an index while preserving entry metadata.

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Image Alt Text Checker

Inspect image alt attributes in pasted HTML, separating missing descriptions from empty alt text that needs contextual review.

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Robots Meta Tag Checker

Inspect robots, googlebot and googlebot-news meta directives in pasted HTML and flag restrictive indexing instructions.

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Sitemap Comparison Tool

Compare two pasted XML sitemaps to find added, removed and common URLs with optional path-only matching.

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Article Schema Generator

Create Article, BlogPosting or NewsArticle JSON-LD from your actual article details.

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Hreflang Tag Generator

Generate alternate-language link tags from language codes and page URLs.

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Canonical Tag Checker

Inspect canonical tags in pasted HTML for duplicates, relative URLs and page mismatches.

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JSON-LD Validator

Check JSON-LD syntax and inspect structured-data types in JSON or pasted HTML.

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Local Business Schema Generator

Build LocalBusiness JSON-LD with your business name, website and postal address.

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Breadcrumb Schema Generator

Generate BreadcrumbList JSON-LD from an ordered list of page names and URLs.

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FAQ Schema Generator

Turn the questions and answers on your page into FAQPage JSON-LD structured data, ready to paste.

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Product Schema Generator

Create Product JSON-LD with price, availability, brand and GTIN for a product page.

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Recipe Schema Generator

Create Recipe JSON-LD with ingredients, steps, cooking times and calories for a recipe page.

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Schema Markup Generator

Generate JSON-LD for products, organizations, people, websites and events from a simple form.

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llms.txt Generator

Create an llms.txt file that points AI assistants to a summary of your site and its key pages.

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Google Review Link Generator

Turn your Google Place ID into a direct review link and a ready-to-paste HTML link.

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Keyword Combiner

Mix up to three keyword lists into every combination, with phrase and exact match for Google Ads.

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Sitemap URL Extractor

Extract unique page or sitemap URLs from sitemap XML into a plain-text list.

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Robots Meta Tag Generator

Create robots meta and X-Robots-Tag directives for a generic crawler or Googlebot.

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Broken Link Checker

Test links from a public webpage and find missing destinations, redirects and checks that need review.

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SEO Checker

Check any web page for on-page SEO: title, meta tags, headings, images, links, indexing and schema.

Readability Checker

Check text readability with the Flesch reading ease score, grade level and the long sentences to fix.

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Content tools

8 tools

Text tools

14 tools

Developer tools

17 tools

JSON Formatter & Validator

Validate, pretty-print, or minify JSON.

Base64 Encoder / Decoder

Encode text to Base64 or decode it back.

Hash Generator

Create MD5, SHA-1, SHA-256 and SHA-512 digests.

UUID Generator

Generate random RFC 4122 version 4 UUIDs.

JWT Decoder

Decode a JSON Web Token header and payload.

Regex Tester

Test a regular expression against sample text.

Timestamp Converter

Convert Unix timestamps to dates and back.

URL Parser

Break a URL into its components and parameters.

HTML Table to CSV Converter

Extract a selected HTML table into quoted CSV, expand merged cells and protect spreadsheet formula values without uploading your data.

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HTML Entity Encoder / Decoder

Escape HTML special characters or decode named and numeric character references in your browser.

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CSV to JSON

Convert CSV data into a JSON array of objects using the header row as keys.

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JSON to CSV

Convert a JSON array of objects into a CSV you can open in any spreadsheet.

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Markdown to HTML

Convert Markdown into clean HTML with a live preview.

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XML Formatter

Format and validate XML with readable indentation while preserving mixed text and significant whitespace.

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cURL Command Generator

Build a shell-safe cURL command from a URL, method, headers and optional body.

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Binary to Text Converter

Decode binary bytes into readable text with UTF-8 or strict ASCII, without uploading your input.

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Text to Binary Converter

Encode text as eight-bit binary bytes with UTF-8 or strict ASCII and your choice of separator.

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Website & network

27 tools

Robots.txt Generator

Generate a clean robots.txt file for your website.

URL Encoder / Decoder

Safely encode or decode URL components.

Domain into IP

Resolve a domain name to its current IP addresses.

Online MD5 Generator

Create an MD5 digest from a text value.

Website Down Checker

Check the HTTP response to a HEAD request from the GigaTools server. A failed check is not proof of a global outage.

Page Size Checker

Measure the response size of a public webpage.

Server Status Checker

Send an HTTP HEAD request to check the response status of a public URL.

Find DNS Records

Look up common DNS records for a domain.

Nameserver Lookup

Inspect a domain’s published nameserver records; these do not always identify its web host.

Get Source Code of Webpage

Fetch and inspect public HTML source.

Website Links Count Checker

Count and classify links in pasted HTML.

Code to Text Ratio Checker

Compare visible text with HTML source size.

URL Rewriting Tool

Generate an Apache rewrite rule from a URL pattern.

Htaccess Redirect Generator

Generate a simple 301 redirect rule.

IPv4 /24 Network Comparison

Check whether two IPv4 addresses share the same first three octets.

Whois Checker

Query basic registration data over WHOIS TCP 43.

Domain Registration Date Lookup

Inspect WHOIS data for a published creation date; not every registry provides one.

HTTP Redirect Response Checker

Check the HTTP response status for a public URL.

Built With Analyzer

Identify common technologies from pasted HTML.

Bulk Reverse DNS Lookup

Look up reverse DNS hostnames for IP addresses; this does not show their physical locations.

HTML Link Extractor

Extract URLs from a pasted list or links from HTML; check each destination separately for a broken response.

Cache-Control Checker

Explain pasted response Cache-Control directives, flag conflicting values and distinguish browser from shared-cache freshness lifetimes.

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URL Cleaner

Remove recognized UTM and click-tracking parameters from a batch of links while preserving unrelated query values and fragments.

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DNS Propagation Checker

Compare DNS answers from Google and Cloudflare, including record values and TTLs. Two resolvers, not worldwide test locations.

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SPF and DMARC Checker

Look up published SPF, DMARC and MX records for a domain without sending email or claiming delivery verification.

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DKIM Record Checker

Look up the public DKIM TXT and CNAME answers for a domain and selector you supply.

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SSL Certificate Checker

Inspect a public website certificate, expiry date, issuer and verified TLS connection.

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Calculators

57 tools

Percentage Calculator

Find a percentage of a number, what percent one number is of another, and percentage change.

Age Calculator

Calculate exact age from a date of birth.

BMI Calculator

Calculate body mass index and category.

Loan / EMI Calculator

Estimate monthly repayments and total interest.

Unit Converter

Convert length, weight, temperature, volume, area, speed, time, data, energy and pressure units.

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Compound Interest Calculator

See how savings grow with compound interest and regular contributions.

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Discount Calculator

Work out the sale price and how much you save from a percentage discount.

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Date Difference Calculator

Count the days, weeks and months between two dates, with business days.

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APY Calculator

Turn an interest rate into its annual percentage yield and see what a deposit earns.

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Calorie Deficit Calculator

Estimate your maintenance calories and daily targets for steady weight loss.

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Date Calculator

Add or subtract days, weeks, months or years from a date, or count working days only.

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Time Calculator

Add and subtract hours, minutes and seconds, or find the clock time after a duration.

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Grade Calculator

Work out a weighted average grade and the score you need on your final exam, on any scale.

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Scientific Calculator

Online scientific calculator with trig, logs, powers, roots and factorials, in degrees or radians.

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GPA Calculator

Work out your semester and cumulative GPA on the 4.0 scale, with honors and AP weighting.

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Time Card Calculator

Add up work hours from clock-in and clock-out times, minus breaks, with weekly overtime and pay.

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Standard Deviation Calculator

Work out the standard deviation, variance, mean, median, mode and range of any set of numbers.

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CM to Inches Converter

Convert centimeters to inches instantly, with the formula and a conversion chart.

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Inches to CM Converter

Convert inches to centimeters instantly, with the formula and a conversion chart.

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KG to LBS Converter

Convert kilograms to pounds instantly, with the formula and a conversion chart.

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LBS to KG Converter

Convert pounds to kilograms instantly, with the formula and a conversion chart.

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Celsius to Fahrenheit Converter

Convert degrees Celsius to degrees Fahrenheit instantly, with the formula and a conversion chart.

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Fahrenheit to Celsius Converter

Convert degrees Fahrenheit to degrees Celsius instantly, with the formula and a conversion chart.

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KM to Miles Converter

Convert kilometers to miles instantly, with the formula and a conversion chart.

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Miles to KM Converter

Convert miles to kilometers instantly, with the formula and a conversion chart.

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Meters to Feet Converter

Convert meters to feet instantly, with the formula and a conversion chart.

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Feet to Meters Converter

Convert feet to meters instantly, with the formula and a conversion chart.

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MM to Inches Converter

Convert millimeters to inches instantly, with the formula and a conversion chart.

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Inches to MM Converter

Convert inches to millimeters instantly, with the formula and a conversion chart.

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Inches to Feet Converter

Convert inches to feet instantly, with the formula and a conversion chart.

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Feet to Inches Converter

Convert feet to inches instantly, with the formula and a conversion chart.

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CM to Feet Converter

Convert centimeters to feet instantly, with the formula and a conversion chart.

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Feet to CM Converter

Convert feet to centimeters instantly, with the formula and a conversion chart.

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Meters to Yards Converter

Convert meters to yards instantly, with the formula and a conversion chart.

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Yards to Meters Converter

Convert yards to meters instantly, with the formula and a conversion chart.

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Grams to Ounces Converter

Convert grams to ounces instantly, with the formula and a conversion chart.

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Ounces to Grams Converter

Convert ounces to grams instantly, with the formula and a conversion chart.

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Grams to Pounds Converter

Convert grams to pounds instantly, with the formula and a conversion chart.

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Pounds to Grams Converter

Convert pounds to grams instantly, with the formula and a conversion chart.

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Pounds to Ounces Converter

Convert pounds to ounces instantly, with the formula and a conversion chart.

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Ounces to Pounds Converter

Convert ounces to pounds instantly, with the formula and a conversion chart.

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Liters to Gallons Converter

Convert liters to US gallons instantly, with the formula and a conversion chart.

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Gallons to Liters Converter

Convert US gallons to liters instantly, with the formula and a conversion chart.

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ML to OZ Converter

Convert milliliters to US fluid ounces instantly, with the formula and a conversion chart.

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OZ to ML Converter

Convert US fluid ounces to milliliters instantly, with the formula and a conversion chart.

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ML to Cups Converter

Convert milliliters to US cups instantly, with the formula and a conversion chart.

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Cups to ML Converter

Convert US cups to milliliters instantly, with the formula and a conversion chart.

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KMH to MPH Converter

Convert kilometers per hour to miles per hour instantly, with the formula and a conversion chart.

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MPH to KMH Converter

Convert miles per hour to kilometers per hour instantly, with the formula and a conversion chart.

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Square Feet to Square Meters

Convert square feet to square meters instantly, with the formula and a conversion chart.

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Square Meters to Square Feet

Convert square meters to square feet instantly, with the formula and a conversion chart.

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Hectares to Acres Converter

Convert hectares to acres instantly, with the formula and a conversion chart.

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Acres to Hectares Converter

Convert acres to hectares instantly, with the formula and a conversion chart.

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Bar to PSI Converter

Convert bar to pounds per square inch instantly, with the formula and a conversion chart.

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PSI to Bar Converter

Convert pounds per square inch to bar instantly, with the formula and a conversion chart.

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KJ to KCAL Converter

Convert kilojoules to kilocalories instantly, with the formula and a conversion chart.

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KCAL to KJ Converter

Convert kilocalories to kilojoules instantly, with the formula and a conversion chart.

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Design & colour

4 tools

Security

6 tools

Everyday utilities

32 tools

My IP Address

View the public IP address detected for your connection.

RGB to HEX

Convert RGB color values into a hexadecimal color.

HEX to RGB

Convert a hexadecimal color into RGB values.

Simple Interest Calculator

Calculate interest and total amount quickly.

Email Privacy

Mask most of the text before the @ sign for a visible display.

YouTube Thumbnail Downloader

Get standard thumbnail URLs from a YouTube link.

Image Placeholder Generator

Create a placeholder image in any size and colour, ready to download as SVG.

Privacy Policy Generator

Draft a clear starter privacy policy.

Terms & Conditions Generator

Draft starter terms for a small website.

URL List Preview

Keep a pasted URL list together for review and copying.

QR Code Generator

Generate a QR code from text or a link and download it as SVG or PNG.

Invoice Builder

Create a printable invoice summary.

Nobel Prize Browser

Browse Nobel Prize data by year and category.

QR Code Decoder

Decode a QR code image locally in your browser.

EXIF Data Viewer

Inspect metadata available from a public image URL.

Website Screenshot Generator

Capture a preview image of the top of a public page.

EXIF Data Remover

Remove EXIF data such as GPS location and camera details from a photo, right in your browser.

UPI QR Code Generator

Create a UPI payment QR code from your UPI ID, name and amount.

Bank to IFSC Code

Format bank branch details for an IFSC lookup.

IFSC Code to Bank Details

Validate the shape of an IFSC code.

Color Picker Tool

Preview a color and copy its hexadecimal value.

Webpage Screen Resolution Simulator

Preview a public page inside a selected viewport.

What is my Browser

View the browser information sent with your request.

Time Zone Converter

Convert a time between time zones around the world, with daylight saving applied.

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Random Number Generator

Generate random numbers in any range, with or without repeats.

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MP3 to WAV

Convert MP3 audio to a 16-bit PCM WAV file in your browser, with original stereo or mono output.

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Audio Cutter

Trim an audio file by start and end time, preview the clip and download it as a WAV file.

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ZIP Extractor

Open a ZIP archive, inspect the file list and download individual files without uploading the archive.

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ZIP Creator

Combine multiple files into a ZIP archive with optional compression, entirely in your browser.

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Online Timer

Set a countdown timer with an alarm or run a stopwatch with laps, right in your browser tab.

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Dice Roller

Roll dice online from d4 to d100, with modifiers, advantage and a roll history.

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Spin the Wheel

Add names or options and spin the wheel to pick a random winner, with fair odds.

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