Lux to Lumens Calculator
Calculate the total amount of light produced by a source based on its intensity on a surface.
Φ_v(lm) = E_v(lx) × A(m²)
100 lux over 15 m² = 100 × 15 = 1500 lumens
How do I convert lux to lumens?
To convert lux to lumens, multiply the illuminance in lux by the surface area in square meters. Formula: Lumens = Lux × Area.
What is the relationship between lux and lumens?
One lux is equal to one lumen per square meter (1 lx = 1 lm/m²). Lumens measure the total light output, while lux measures how that light is spread over an area.
Can I calculate lumens from lux and distance?
Yes, if you know the distance and the beam angle or area at that distance. If the light is spread over a spherical area, Area = 4πr².
🔗 Related Calculators
📐 Formula
Φ_v(lm) = E_v(lx) × A(m²)
📝 Example Calculation
100 lux over 15 m² = 100 × 15 = 1500 lumens
❓ Frequently Asked Questions
How do I convert lux to lumens?▼
To convert lux to lumens, multiply the illuminance in lux by the surface area in square meters. Formula: Lumens = Lux × Area.
What is the relationship between lux and lumens?▼
One lux is equal to one lumen per square meter (1 lx = 1 lm/m²). Lumens measure the total light output, while lux measures how that light is spread over an area.
Can I calculate lumens from lux and distance?▼
Yes, if you know the distance and the beam angle or area at that distance. If the light is spread over a spherical area, Area = 4πr².