Resize Image in cm, inch or mm
Whether you measure in centimetres, inches or millimetres, pick your DPI and this tool sizes the image to match — then hands you the download on the spot.
Open Resize in cm / inch / mm →DPI reference — cm, inch and mm in pixels
No physical measurement pins down to real pixels until you settle on a DPI. The table shows where cm, inch and mm land at the values people use most.
| DPI | Best for | 1 inch | 1 cm | 1 mm |
|---|---|---|---|---|
| 72 DPI | Web / on-screen display | 72 px | ≈ 28 px | ≈ 2.8 px |
| 150 DPI | Minimum print quality | 150 px | ≈ 59 px | ≈ 5.9 px |
| 300 DPI | Standard print (ID cards, photos) | 300 px | ≈ 118 px | ≈ 11.8 px |
| 600 DPI | High-quality print / scanning | 600 px | ≈ 236 px | ≈ 23.6 px |
Taken at 300 DPI: 1 inch = 300 px · 1 cm ≈ 118 px · 1 mm ≈ 11.8 px. This page starts at 600×600 px, writes JPG, and aims for 0–500 KB.
How to resize an image in cm, inch or mm — step by step
About resizing images in cm, inch or mm
Give it a measurement in centimetres, inches or millimetres, choose the DPI, and it reshapes the image to fit before letting you download it moments later. It suits filling out an exam form, readying a photo for print, or matching a picture to one precise size on a project — and the whole conversion runs in your browser as you watch.
No install, no upload: the image never leaves the device you are using.