Resize Image in CM Online Free
Resize an image to exact centimeter dimensions right in your browser. Set the width and height in cm, lock the aspect ratio so it does not stretch, and set a target file size in KB. Made for printing, photo prints, and forms. Downloads as JPG. No upload, no sign-up.
How to Resize an Image in CM
Upload Your Image
Drag and drop your image or click to choose one. Its current size in cm fills in automatically.
Set the CM Size
Enter the width and height in centimeters. Lock the aspect ratio if you want to keep the shape, and set a target KB if a form needs it.
Download at 200 DPI
Click Download Image to save the resized JPG at 200 DPI, ready for print or upload.
Resize an Image to Exact Centimeters for Print
Frames, posters, photo prints, and book covers are usually specified in centimeters, not pixels. This resizer converts your image to the exact cm dimensions you need, rendered at 200 DPI, so it prints at the physical size you set. Type the width and height in cm and download, no math required.
When a form or print shop caps the file size, set the target in KB. The default is your uploaded file size, so lower it to compress further. The tool tunes the JPEG quality and, if needed, the dimensions, then matches your exact target, so a passport print or an exam upload lands within the limit on the first try. Lock the aspect ratio to keep faces and shapes from stretching.
Everything runs in your browser, whether you are here in India or anywhere else, so the image never leaves your device. To double-check sharpness before you print, run the file through the DPI checker, and use the reduce image size tool when you only need to hit a KB limit.
Why Use Our CM Image Resizer?
Exact Centimeter Sizing
Type the width and height in cm and the image is resized to that exact physical size at 200 DPI.
Lock Aspect Ratio
Keep the original shape so faces and objects do not stretch when you change one side.
Hit a Target KB
Set a file size and the tool compresses to match it, handy for forms and print portals with a size cap.
Ready for Print
Output at 200 DPI matches common print needs, from photo prints to frames and posters.
Live Preview
See the image update at the new cm size right away, with the dimensions shown on the preview.
Fully Private
Everything runs in your browser. The image is never uploaded to a server or seen by anyone.
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Frequently Asked Questions
Common questions about resizing images in centimeters.
How do I resize an image in centimeters?
Upload your image, type the width and height in cm, and click Download Image. The tool renders it at 200 DPI so it prints at the exact physical size. It is free and runs in your browser.
How are centimeters converted to pixels?
The tool uses 200 DPI, so 1 cm equals about 79 pixels. A 3.5 by 4.5 cm photo becomes roughly 276 by 354 pixels. That resolution is good for most photo and document printing.
Can I set an exact file size in KB?
Yes. The target size field defaults to your uploaded file size, and you can lower it. The tool tunes the JPEG quality, and shrinks the dimensions only if needed, to match the KB you set.
How do I stop the image from stretching?
Turn on Lock Aspect Ratio. When it is on, changing the width updates the height automatically, so the picture keeps its original shape and nothing looks squashed.
What format does the resized image download as?
The resized image downloads as a JPG at 200 DPI. JPG keeps the file small, which is why most print shops and form portals ask for it.
Is my image safe when I resize it?
Yes. The whole process runs inside your browser, so the image never leaves your device and is never uploaded to a server. Nothing is stored or shared.