// multi-utility computation suite · offline · instant · precise
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photo.sensor-crop-factor Calculator
Calculates the crop factor of a sensor relative to full-frame 35mm and the equivalent focal length of any lens mounted on it. A 50mm lens on a 1.5× crop sensor behaves like a 75mm lens — critical for understanding field of view.
Inputs
Focal Mm
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Crop Factor
A multiplier applied in the calculation.
Native Aperture
Reference formula or conversion factor shown for context.
Results
FF equivalent focal length (mm)
The computed linear length.
FF equivalent aperture (DoF)
Sample size or count used in the calculation.
crop factor
A dimensionless multiplier applied in the calculation.
native focal + aperture
The value at the specified point or condition.
APS-C crop factor
A dimensionless multiplier applied in the calculation.
MFT crop factor
A dimensionless multiplier applied in the calculation.