Megapixel calculator

A "megapixel" is one million (1.000.000) pixels. Enter the pixel dimensions of your photo, camera, screen or tv, and calculate how many megapixels that is.

Calculate megapixels

  • Size = 3000 x 4500 = 13,500,000 pixels
  • Pixel count = 13.5MP pixels
  • Resolution = 13.5MP pixels
  • A full frame sensor would be 16.1 x 24 mm (0.67)
  • Pixel density would be 83 pixels/mm or 2120 pixels/inch (dpi)
  • Pixel pitch: 12 micron (rather large)

Calculate (file) size

Print sizes (m2)

dpimax dim (m)max surface
10 dpi billboard7.62m x 11.43m= 87.1m2
72 dpi newspaper105.8cm x 158.7cm= 1.68m2
96 dpi minimum79.4cm x 119.1cm= 0.95m2
150 dpi magazine50.8cm x 76.2cm= 3871cm2
240 dpi inkjet printer31.7cm x 47.6cm= 1512cm2
300 dpi inkjet printer25.4cm x 38.1cm= 967.7cm2
600 dpi laser printer12.7cm x 19.0cm= 241.9cm2
1200 dpi high-end printer6.3cm x 9.5cm= 60.48cm2

Compare to

4K TV (16:9)8K TV (16:9)HDCAMNTSC DVDNTSC SVCDNTSC TVNTSC VCDPAL DVDPAL SVCDPAL VCDQuicktime HD 1080pQuicktime HD 720pQuicktime SD 480p


For decades, advances in camera technology have been measured in 'megapixels', although more pixels doesn't always mean better quality. The same metric can also be used to describe the resolution of photos, or digital screens. This megapixel calculator brings it all together. Calculate, compare, visualise and estimate.


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Image Width x Height → aspect ratio
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Focal length, distance, crop factor → image composition
Depth-of-Field Calculator
Aperture, focal length, subject distance, crop → depth-of-field
DPI calculator
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Megapixel calculator
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