Exposure Value (EV) Calculator

Calculate Exposure Value (EV) from your camera settings — then instantly see every equivalent exposure combination. Includes lux and foot-candle equivalents, scene references, and a full EV chart.

Common scenes — click to load typical EV
Starry night
EV -2 to 1
Candlelit room
EV 3 to 6
Indoor office
EV 7 to 9
Overcast outdoor
EV 10 to 12
Hazy sun
EV 12 to 14
Sunny day
EV 14 to 16
Your camera settings

Please check your inputs.

Exposure Value
0 EV
0
EV at ISO 100
0 lux
Scene luminance
0 fc
Foot-candles
0 cd/m2
Luminance
EV scale — where your setting falls
EV -4 (pitch black)05101520 (bright sun)
Equivalent exposures — same EV, different settings
EV reference chart — common scenes
Scene / conditionEVLux (approx)Typical setting
Aperture
Shutter speed
ISO
EV at this ISO
EV at ISO 100
Scene luminance
Formula
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.