Exposure value to f-stops
Type a value in EV to get it in f/N instantly.
8.262f/N
That's about the same as an overcast day. That is about 4,096 times the light of EV 0.
What it means
How much light is that?
All values are at ISO 100. Shutter speeds assume f/5.6 and apertures assume 1/60 s, since EV fixes only the combination, not either one alone.
The math
How to convert EV to f/N
Exposure value is logarithmic: EV = log₂(N² ÷ t) for aperture N and shutter time t, and each step of one either doubles or halves the light. Lux follows as lux = 2.5 × 2^EV at ISO 100.
Example: 12 EV = 8.26236 f/N.
Every unit
Your exposure in every unit
Tables
EV to f/N conversion table
| EV | f/N |
|---|---|
| -2 EV | 0.0645497 f/N |
| 0 EV | 0.129099 f/N |
| 2 EV | 0.258199 f/N |
| 4 EV | 0.516398 f/N |
| 6 EV | 1.0328 f/N |
| 8 EV | 2.06559 f/N |
| 10 EV | 4.13118 f/N |
| 12 EV | 8.26236 f/N |
| 14 EV | 16.5247 f/N |
| 15 EV | 23.3695 f/N |
| 16 EV | 33.0495 f/N |
| 18 EV | 66.0989 f/N |
f/N to EV conversion table
| f/N | EV |
|---|---|
| 0.0645 f/N | -2.00222 EV |
| 0.129 f/N | -0.00222346 EV |
| 0.258 f/N | 1.99778 EV |
| 0.516 f/N | 3.99778 EV |
| 1.03 f/N | 5.99218 EV |
| 2.07 f/N | 8.00615 EV |
| 4.13 f/N | 9.99917 EV |
| 8.26 f/N | 11.9992 EV |
| 16.5 f/N | 13.9957 EV |
| 23.4 f/N | 15.0038 EV |
| 33 f/N | 15.9957 EV |
| 66.1 f/N | 18 EV |
Quick answers
Quick answers
- How many f/N is 1 EV?
- 1 EV is 0.182574 f/N.
- How many f/N is 10 EV?
- 10 EV is 4.13118 f/N.
- How many f/N is 12 EV?
- 12 EV is 8.26236 f/N.
The units
About these units
Exposure value (EV)
The photographer’s scale at ISO 100. Each step is one doubling of light.
F-stops (f/N)
The aperture that captures this light at 1/60 second.
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