Crop Factor Calculator
Calculate equivalent focal length and field of view from sensor crop factor. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
Equivalent FL = Actual FL × Crop Factor | Equivalent Aperture = f-stop × Crop Factor
Crop factor converts between sensor sizes. Full-frame = 1.0×. APS-C = 1.5× (Nikon/Sony) or 1.6× (Canon). Micro 4/3 = 2.0×.
Worked Examples
Example 1: 50mm on APS-C
Problem:50mm lens, 1.5× crop
Solution:50 × 1.5 = 75mm equivalent
Result:75mm equivalent focal length
Frequently Asked Questions
What is crop rotation and why is it important?
Crop rotation means growing different plant families in each bed each year. It prevents soil-borne disease buildup, balances nutrient depletion, and breaks pest cycles. A simple 4-year rotation: legumes (add nitrogen), then leafy greens (use nitrogen), then fruiting crops, then root vegetables. Never follow a crop with the same family.
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy