Resize Image to Custom Size (px)
Decide the exact pixels and the file weight yourself: enter a width, a height and a target size, and the image bends to your numbers.
Open Resize to Custom Size →DPI reference — turning cm, inch and mm into pixels
If you already think in pixels, just type them in. Aiming for a real-world size instead? Convert it with the figures below before you start.
| 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 |
Reckoning at 300 DPI: 1 inch = 300 px · 1 cm ≈ 118 px · 1 mm ≈ 11.8 px. This page opens at 600×600 px, saves as JPG, and targets 0–500 KB.
How to resize an image to a custom size — step by step
About resizing images to a custom size
Type in whatever width × height in pixels you need, add the file size you are aiming for, and you steer every part of the output. Uploading paperwork for an exam form, prepping a photo for the printer, or matching an image to one exact measurement for a project — the resize finishes in a moment, right there in your browser.
There is nothing to download and nothing to send off; your image stays put on your own device.