Exposure value to brightness ratio
Type a value in EV to get it in × instantly.
4,096×
That's about the same as an overcast day. That is about 4,096 times the light of EV 0.
Convert the other way: × to EV
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 ×
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 = 4,096 ×.
Every unit
Your exposure in every unit
Tables
EV to × conversion table
| EV | × |
|---|---|
| -2 EV | 0.25 × |
| 0 EV | 1 × |
| 2 EV | 4 × |
| 4 EV | 16 × |
| 6 EV | 64 × |
| 8 EV | 256 × |
| 10 EV | 1,024 × |
| 12 EV | 4,096 × |
| 14 EV | 16,384 × |
| 15 EV | 32,768 × |
| 16 EV | 65,536 × |
| 18 EV | 262,144 × |
× to EV conversion table
| × | EV |
|---|---|
| 0.25 × | -2 EV |
| 1 × | 0 EV |
| 4 × | 2 EV |
| 16 × | 4 EV |
| 64 × | 6 EV |
| 256 × | 8 EV |
| 1,020 × | 9.99435 EV |
| 4,100 × | 12.0014 EV |
| 16,400 × | 14.0014 EV |
| 32,800 × | 15.0014 EV |
| 65,500 × | 15.9992 EV |
| 262,000 × | 17.9992 EV |
Quick answers
Quick answers
- How many × is 1 EV?
- 1 EV is 2 ×.
- How many × is 10 EV?
- 10 EV is 1,024 ×.
- How many × is 12 EV?
- 12 EV is 4,096 ×.
The units
About these units
Exposure value (EV)
The photographer’s scale at ISO 100. Each step is one doubling of light.
Brightness ratio (×)
How many times more light than EV 0, without the logarithm.
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