How it works
Fill in the 3 fields above and Exposure Value (EV) Calculator calculates the result instantly, recalculating as you change any value. It applies the formula EV = log₂(N²/t) − log₂(ISO/100). The math runs locally in your browser — nothing is sent to a server.
Formula
EV = log₂(N²/t) − log₂(ISO/100)Examples
- Aperture (f/) 8, Shutter (1/x s) 250, ISO 100 → Exposure value: EV 14
Frequently asked questions
How do I use the Exposure Value (EV) Calculator?
Enter your values in the 3 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Exposure Value (EV) Calculator use?
It uses EV = log₂(N²/t) − log₂(ISO/100). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Exposure Value (EV) Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Exposure Value (EV) Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on photography and the rest of the platform, you can use it as often as you like.
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