Lumens To Watts Calculator
Estimate power (watts) equivalent of a given luminous flux (lumens) for a specified light source type using luminous efficacy. Use it to test different inputs quickly, compare outcomes, and understand the main factors behind the result before moving on to related tools or deeper guidance.
Last updated
Formula
Power (W) = Luminous flux (lm) / Efficacy (lm/W)
Result
8 W
800 lm with LED (100 lm/W) requires 8 watts.
Also in Lighting
You may also need
Related
More from nearby categories
These related calculators come from the same leaf category, nearby sibling categories, or the same top-level topic.
Watts To Lumens Calculator
Estimate luminous flux (lumens) from power (watts) for a specified light source type using luminous efficacy values.
Lux To Watts Calculator
Estimate power (watts) from illuminance (lux) and area for a specified light source type using luminous efficacy.
Watts To Lux Calculator
Estimate illuminance (lux) from power (watts) and area for a specified light source type using luminous efficacy.
Lumens To Candela Calculator
Convert luminous flux and solid angle into candela, with beam-coverage interpretation and reference rows for common solid angles.