Resize to cm or mm
Set a physical print size with the DPI you need.
About Resize to cm or mm
Print shops and forms ask for sizes like 3.5 by 4.5 cm at 300 DPI, which is confusing to translate into pixels. Enter the physical size and DPI and the tool resizes the image and writes the DPI into the file so it prints at the right size.
- 300 DPI is standard for prints; 150 DPI is fine for large posters viewed from a distance.
- If the ratio differs from the original, choose crop or add borders.
- Passport photo maker already knows the sizes for most countries.
How to use it
- 1Drop an image.
- 2Enter the width and height in cm, mm or inches, and the DPI.
- 3Download the print-ready image.
Questions
- What does DPI mean?
- Dots per inch: how many pixels are printed in each inch. More DPI means sharper prints and more pixels needed.
- Will it enlarge small photos?
- It can, but enlarging beyond about 150% looks soft. Start from the largest original you have.
- Is the photo uploaded?
- No. Everything runs in your browser, so your photos never leave your device.
Popular presets
Resize photo to 35 × 45 mmResize an image to 35 × 45 mm at the DPI you need for printing.Resize photo to 51 × 51 mmResize an image to 51 × 51 mm at the DPI you need for printing.Resize photo to 2 × 2 inchResize an image to 2 × 2 inch at the DPI you need for printing.Resize photo to 4 × 6 inchResize an image to 4 × 6 inch at the DPI you need for printing.Resize photo to 10 × 15 cmResize an image to 10 × 15 cm at the DPI you need for printing.
More resize & crop tools
Resize imageSet exact pixels or scale by percent.Crop imageDrag to crop, or type exact coordinates.Bulk cropApply one crop to a whole batch of photos.Social media resizerOne upload, every size for Instagram, YouTube, X and LinkedIn.Rotate & flipFix sideways photos and mirror images.Circle cropCut a round profile picture with a transparent background.Add borderPad an image with a color or transparent border.Photo collageArrange several photos into one grid.