Convert Lux to lm/ft²
Type the number of lux that you wish to convert to lumens per square foot.
How to Convert Lux to Lumens per Square Foot
The lux and lumen per square foot are both units of illuminance. 1 lumen per square foot equals 10.763910417 lux. This means to convert lux to lumens per square foot, you divide by 10.763910417.
Formula
Step-by-Step Example
Convert 5 lx to lumens per square foot:
We need to convert lux to lumens per square foot
Since 1 lm/ft² = 10.763910417 lx, divide by 10.763910417
5 ÷ 10.763910417 = 0.4645152
5 lx = 0.4645152 lm/ft²
Lux to Lumen per Square Foot Conversion Table
Quick reference table for common lux to lumen per square foot conversions. Click any value for detailed calculation.
| Lux (lx) | Lumens per Square Foot (lm/ft²) |
|---|---|
| 1 lx | 0.09290304 lm/ft² |
| 2 lx | 0.18580608 lm/ft² |
| 5 lx | 0.4645152 lm/ft² |
| 10 lx | 0.9290304 lm/ft² |
| 15 lx | 1.3935456 lm/ft² |
| 20 lx | 1.8580607999 lm/ft² |
| 25 lx | 2.3225759999 lm/ft² |
| 50 lx | 4.6451519999 lm/ft² |
| 100 lx | 9.2903039997 lm/ft² |
About These Units
Lux (lx)
The lux (lx) is the SI unit of illuminance, measuring luminous flux per area (lumens per square meter). Typical values: moonlight 0.1 lx, office 300-500 lx, overcast day 1,000 lx, operating room 10,000 lx, direct sunlight 100,000 lx. Used in lighting design, photography, and workplace safety standards.
Lumen per Square Foot (lm/ft²)
Lumens per square foot (lm/ft²) is identical to foot-candles. The defining relationship: one foot-candle = one lumen per square foot. Used in US lighting calculations: lumens needed = foot-candles × square feet. Standard in American architectural lighting design.
Frequently Asked Questions
How do I convert lux to lumens per square foot?
To convert lux to lumens per square foot, divide the value by 10.763910417. For example, 10 lx = 0.9290304 lm/ft².
How many lumens per square foot are in 1 lux?
1 lux equals 0.09290304 lumens per square foot.
What is the formula for lux to lumens per square foot?
The formula is: lm/ft² = lx ÷ 10.763910417.