Resize image in centimetres
Resize a photo in cm with DPI — set the exact width and height in centimetres at 300 DPI for passport, form and print sizes. Free, instant and 100% in your browser.
= 413×531 px at 300 DPI
Resize in cm in 3 simple steps
Enter cm and DPI
Type the width and height in centimetres and set the DPI — 300 is standard for forms and print.
Upload your photo
Drop a JPG or PNG; it stays on your device and is never uploaded.
Download
The tool resizes to the exact pixel size and you download a ready-to-use JPG.
Why use this cm resizer
100% private
Everything runs in your browser; your photo is never uploaded to a server.
Exact centimetres
Hit precise sizes like 3.5×4.5 cm so forms and print shops accept your photo.
DPI-aware
Pick 300 DPI and the tool works out the matching pixel dimensions for you.
Instant
Resize in about a second — no waiting and no queue.
Works anywhere
Phone, tablet or desktop, in any modern browser.
Free & unlimited
No sign-up, no watermark — use it as often as you like.
Resize a photo to exact centimetres
Forms and print shops often specify a photo size in centimetres— a 3.5×4.5 cm passport photo, a 2×2.5 cm stamp size, a 4×6 inch print, and so on. This tool lets you type the size in cm and the DPI, works out the exact pixel dimensions for you, and resizes your image to match.
To resize an image in cm with DPI, just enter your centimetre size and a DPI value. For most form and passport photos, keep the DPI at 300 — resizing a photo in cm with 300 DPI produces the standard pixel sizes portals expect. If your form gives the size in pixels instead, use the Image Resizer, and to hit a file-size limit afterwards run it through the Image Compressor or resize in KB.