Resize your photo to an exact size in millimeters (mm) using this fast and accurate online image resizer. Convert mm to pixel dimensions automatically.
Steps:This tool allows you to resize any image based on millimeter (mm) measurements. Many government forms, passport applications, and printing requirements specify photo size in millimeters rather than pixels. This tool converts your required mm dimensions into accurate pixels, using the standard formula:
Pixels = (MM ÷ 25.4) × DPI
You can choose DPI such as 96, 150, 200, 300 depending on your use case. After conversion, simply upload your image and resize it to the exact pixel size with optional file compression.
Resize image to 35 × 45 mm → Tool converts to 413 × 531 px (at 300 DPI).
Example 2:Resize photo to 20 × 20 mm → Output becomes 236 × 236 px.
Example 3:Create 50 × 50 mm passport-style image → 591 × 591 px.
Enter the required mm dimensions. The tool converts mm to pixels based on DPI and resizes your image accordingly.
Yes, the tool uses the standard formula: Pixels = (MM ÷ 25.4) × DPI.
For printing and passport photos, 300 DPI is recommended. For web use, 96 DPI works well.
Yes, you can set a KB limit such as 50 KB or 100 KB to reduce file size.
