Resize image in cm

Change dimensions in pixels, cm, mm or inches.

Drop images hereor Choose files · Paste from clipboard with Ctrl+VJPG · PNG · WebP · AVIF · HEIC · TIFF · GIF · BMP · SVG · PSD · RAW

Add images by dropping, choosing or pasting them.
Adjust the options — everything previews on your device.
Run, compare before and after, then download or share.

Resize by centimetres, not pixels

A size in centimetres only means something together with a resolution, so this tool converts the centimetres you type into pixels at the DPI you choose (300 by default) and writes that DPI into the file. The printer then prints the image at exactly that size when the print dialog is set to actual size. Common requests are 3.5 × 4.5 cm photos, 10 × 15 cm prints, 6 × 2 cm signatures and A4 or A5 pages, all available as presets.

Keep the aspect ratio locked to avoid distortion, or choose crop to fill when the form needs an exact shape. Turn on the size cap if the portal also limits kilobytes: the tool resizes and compresses in one pass.

Where this is accepted

Exam and ID forms that specify physical dimensions, photo printing services, frames and albums, badges, and document templates with centimetre sizes.

Resize image

Resize by exact pixels or physical size at a chosen DPI. Keep the aspect ratio, crop to fill, or pad with a color. Optionally compress the result to a size limit at the same time.

How it works

Add images by dropping, choosing or pasting them.
Adjust the options — everything previews on your device.
Run, compare before and after, then download or share.

Frequently asked questions

Can I resize in centimeters or inches?

Yes. Switch the unit to cm, mm or in, set the DPI (300 for print, 72–96 for screens) and the tool converts to exact pixels and writes the DPI into the file (JPG and PNG).

What is the difference between Fit, Fill and Stretch?

Fit keeps the whole image inside the box, Fill crops to cover the box exactly, Stretch ignores the aspect ratio, and Pad adds a background to reach the exact size without cropping.

Can I resize and compress at the same time?

Turn on "Also limit file size" and set a KB target. The image is resized first and then encoded to fit your limit in one pass.

Compress imageShrink a photo to an exact KB or MB target.Crop imageFree crop, fixed ratios or a perfect circle.Passport photoOfficial sizes for any country, print-ready sheet.Change DPICheck and set 72, 150, 300 or any DPI.