Resize image in cm or inches (convert to pixels)
Web and social platforms use pixels. To resize by cm/inches, convert to pixels using DPI, then resize.
- pixels = inches × DPI
- inches = pixels ÷ DPI
- cm to inches: cm ÷ 2.54
- mm to inches: mm ÷ 25.4
- 72–96 DPI for screens
- 300 DPI for print
- Convert cm/inches to pixels using DPI.
- Enter the pixel size in the resizer.
- Export JPG/PNG locally.
10 cm at 300 DPI → 10 ÷ 2.54 × 300 ≈ 1181 px.
Open this preset when the target is a square social post, so the pixel canvas is ready before you convert physical units.
Use this when the export is a portrait feed post, so you can compare the pixel result against cm or inch requirements.
Use this when the image ends up as a thumbnail or 16:9 graphic, so the pixel target is locked before print math.
Use this when you want to skip physical units and set digital dimensions directly, so the export matches screen specs.
Use this when you already have pixel numbers and need the physical print size, so the conversion goes the other direction.
Use this when the brief is written in millimeters, so the image can move from cm/inches to mm-based sizing.