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Image size and DPI calculator

Convert pixels to centimetres or inches at a resolution (DPI) and back, with megapixels and uncompressed size.

AvailableIn your browserInput: Text

How to use: Image size and DPI calculator

  1. Choose to start from pixels or from a print size.
  2. Enter the resolution in DPI (300 is usual for print).
  3. Read the print size or the pixels needed, megapixels and uncompressed size.

What it accepts and what you get

Input
Pixels or centimetres/inches and a resolution.
Output
Pixels, megapixels, size in cm and inches and uncompressed size.
Where your data is processed
Your data is processed in your browser and is not sent to our servers.

Limitations and notes

  • The uncompressed size is the image in memory; a real JPG or PNG is much smaller.

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