Easily convert lumens to lux with this online calculator. Just enter the lumens and area to see the lux instantly.
Lumens to Lux Calculator
How it works
Illuminance (lux) is luminous flux (lumens) per unit area: E (lx) = Φ (lm) ÷ A (m²). Provide lumens and the illuminated area; the widget converts units and shows lux.
How to Convert Lumens to Lux
The conversion from lumens to lux depends on the illuminated area. One lux equals one lumen per square meter. This means if you know the total lumens and the size of the area being lit, you can easily calculate lux.
Lumens to Lux Formula
The formula for converting lumens to lux is:
Lux = Lumens ÷ Area (in m²)
Where:
- Lumens is the total light output from the source.
- Area is the surface area in square meters that receives the light.
Examples
Here are some quick lumens-to-lux conversions for common scenarios:
1000 lumens to lux
If the light covers 10 m²:
Lux = 1000 ÷ 10 = 100 lux
2000 lumens to lux
If the light covers 20 m²:
Lux = 2000 ÷ 20 = 100 lux
What is 500 lumens in lux?
If the light covers 5 m²:
Lux = 500 ÷ 5 = 100 lux
How many lux is 3000 lumens?
If the light covers 15 m²:
Lux = 3000 ÷ 15 = 200 lux
For the reverse calculation, try our Lux to Lumens Converter for quick results.
