Calculator
DPI, PPI, and resolution converter
Link pixel width, DPI, and physical size in centimeters. Change any field — the others update.
Calculator form
How to
How to use
1
Set pixels and DPI
Typical start: canvas size and 300 DPI for print.
2
Check centimeters
Match the print shop’s ordered dimensions.
3
Export
Keep a screen copy and a separate print export.
Examples
Sample calculations
3000 px @ 300 DPI
≈ 25.4 cm wide
Pitfalls
Common mistakes
Mistake
Equating monitor PPI with print DPI → Screen PPI does not define print quality.
FAQ
FAQ
DPI vs PPI?
PPI is display density; DPI is output dots on media. Values in files are often the same number.
72 DPI for web?
Websites care about pixels; 72 DPI is just a metadata hint.
Lock it in with practice
Open the free editor and apply the result — a short sketch beats more reading.