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Resize Image in CM

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

Free No sign-up Runs in your browser

JPG, PNG or WebP · Up to 20 MB and 16 million pixels per image · Files stay on your device.

DPI calculates the pixel grid; this tool does not write that DPI into file metadata. Set the desired print size in your printing app.

Guide: reduce image size below 100 KB

What is Resize Image in CM?

Resize Image in CM is a free online image tool from GigaTools. Set centimetres and DPI to calculate pixel dimensions, then resize without stretching. It runs entirely in your web browser, so nothing is uploaded and it works on any device without installing software.

Common uses

  • Set centimetres and DPI to calculate pixel dimensions, then resize without stretching.
  • Prepare files without uploading them to a server

How it works

How to use Resize Image in CM

Choose a photo

Select your image and enter width and height in centimetres.

Choose resolution and fit

DPI is used to calculate pixels. Fit adds white padding; centre crop trims the edges.

Download and print

Save the JPG and set physical print dimensions in your printing application.

FAQ

Good to know

How do I use Resize Image in CM?

1. Choose a photo: Select your image and enter width and height in centimetres. 2. Choose resolution and fit: DPI is used to calculate pixels. Fit adds white padding; centre crop trims the edges. 3. Download and print: Save the JPG and set physical print dimensions in your printing application.

Does this write the selected DPI into the file?

No. DPI is used to calculate pixels: centimetres ÷ 2.54 × DPI. Canvas exports may use 96 DPI metadata. Set the intended physical size in your printing application.

What are the limits?

JPG, PNG or WebP only. Each input is limited to 20 MB and 16 million pixels. Output is limited to 16 million pixels; contact sheets accept up to 12 files.

Are images uploaded?

No. File processing stays in your browser. This does not remove all third-party requests made by the website.

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