Your files never leave your device. All processing happens in your browser.
Open the Img Stop Resize Image in CM, MM or Inches tool, add your image, enter the width and height in cm, mm or inches and choose a DPI (300 by default). Crop or fit the image, then download – the size is converted to pixels and the DPI is written into JPG files so it prints at the right size.
About the Resize Image in CM, MM or Inches
Forms and print shops often give sizes in centimetres or inches – 3.5×4.5 cm, 6×2 cm, 2×2 inches – while most editors only work in pixels. The Img Stop Resize Image in CM, MM or Inches tool does the maths for you: enter the size and a DPI between 72 and 600, and it converts to the exact pixel size.
Use the crop box to choose the area, or fit and pad the whole image into the size. For JPG files the DPI is written into the file, so it prints at the correct physical size. Resize one image or many at once – all in your browser.
Key features
- cm, mm or inchesEnter the size in the unit you were given.
- DPI 72–600Default 300 DPI for good print quality.
- Exact pixel conversionSize and DPI are converted to pixels automatically.
- Crop box or fit/padCrop to the shape, or fit the whole image with padding.
- DPI saved in JPGThe DPI is written into JPG files so print size is correct.
- BulkResize many images at once and download a ZIP.
How to use the Resize Image in CM, MM or Inches
- Add images Drop one or more photos.
- Enter size and DPI Type width and height in cm, mm or inches and choose a DPI.
- Crop or fit Drag the crop box, or choose fit/pad to keep the whole image.
- Download Download the resized image or a ZIP for many.
Resize Image in CM, MM or Inches at a glance
| Price | Free, no watermark |
|---|---|
| Units | cm, mm, inches |
| DPI | 72–600, default 300 |
| Modes | Crop box or fit/pad |
| Bulk | Yes – many images at once, ZIP download |
| Processing | In your browser – photos are not uploaded |
When to use it
- Make a 3.5×4.5 cm photo for SSC and other exam forms.
- Resize a signature to 6×2 cm.
- Prepare a 2×2 inch photo for visa forms.
- Resize artwork to A4 or another print size at 300 DPI.
- Set the right print size before taking photos to a shop.
Tips for the best result
- 300 DPI is standard for printing; online forms may state their own DPI.
- If the form also has a KB limit, use the Form Photo & Signature Resizer.
- Use fit/pad if you must not cut any part of the image.
- Check the form’s notice for exact width and height.
Frequently asked questions
How do I resize an image in cm?
Open the Img Stop Resize Image in CM tool, choose cm, type the width and height, set the DPI and download. The tool converts the size to pixels for you.
How many pixels is 3.5×4.5 cm?
At 300 DPI, 3.5×4.5 cm is about 413×531 pixels. The tool calculates this automatically for any DPI.
What DPI should I use?
Use 300 DPI for printing. If an online form gives its own DPI, use that value instead.
Will the photo print at the right size?
Yes. For JPG files the DPI is written into the file, so print software uses the correct physical size.
Can I resize many photos to the same size in cm?
Yes. Add several images and they are all resized to the same size and DPI, then downloaded as a ZIP.
Learn more
- Dots per inch – how pixels, DPI and print size relate
Made and maintained by the Img Stop team.