How to convert foot-lamberts to candelas per square foot
cd/ft² = fL × 0.3183098862Multiply the value in foot-lamberts by 0.3183098862. To go the other way, multiply by 3.141592654 (or divide by 0.3183098862).
A foot-lambert is smaller than a candela per square foot: it takes 3.141592654 foot-lamberts to make one candela per square foot.
Worked examples
- 1 foot-lambert1 fL × 0.3183098862 = 0.3183098862 cd/ft²
- 5 foot-lamberts5 fL × 0.3183098862 = 1.591549431 cd/ft²
- 10 foot-lamberts10 fL × 0.3183098862 = 3.183098862 cd/ft²
- 20 foot-lamberts20 fL × 0.3183098862 = 6.366197724 cd/ft²
- 100 foot-lamberts100 fL × 0.3183098862 = 31.83098862 cd/ft²
Foot-lamberts to candelas per square foot conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Foot-lamberts (fL) | Candelas per square foot (cd/ft²) |
|---|---|
| 0.1 fL | 0.031830989 cd/ft² |
| 0.25 fL | 0.079577472 cd/ft² |
| 0.5 fL | 0.15915494 cd/ft² |
| 1 fL | 0.31830989 cd/ft² |
| 2 fL | 0.63661977 cd/ft² |
| 3 fL | 0.95492966 cd/ft² |
| 4 fL | 1.2732395 cd/ft² |
| 5 fL | 1.5915494 cd/ft² |
| 6 fL | 1.9098593 cd/ft² |
| 7 fL | 2.2281692 cd/ft² |
| 8 fL | 2.5464791 cd/ft² |
| 9 fL | 2.864789 cd/ft² |
| 10 fL | 3.1830989 cd/ft² |
| Foot-lamberts (fL) | Candelas per square foot (cd/ft²) |
|---|---|
| 12 fL | 3.8197186 cd/ft² |
| 15 fL | 4.7746483 cd/ft² |
| 20 fL | 6.3661977 cd/ft² |
| 25 fL | 7.9577472 cd/ft² |
| 30 fL | 9.5492966 cd/ft² |
| 40 fL | 12.732395 cd/ft² |
| 50 fL | 15.915494 cd/ft² |
| 75 fL | 23.873241 cd/ft² |
| 100 fL | 31.830989 cd/ft² |
| 250 fL | 79.577472 cd/ft² |
| 500 fL | 159.15494 cd/ft² |
| 1,000 fL | 318.30989 cd/ft² |
About the units
Foot-lambert (fL)
(1/π) cd/ft², about 3.426 cd/m². Cinema screens are specified around 14–16 fL. One foot-lambert equals 3.4262591 nits (cd/m²).
Candela per square foot (cd/ft²)
The candela per square foot (cd/ft²) is a unit of luminance in the US customary system. One candela per square foot equals 10.76391042 nits (cd/m²).
Frequently asked questions
How many candelas per square foot are in one foot-lambert?
There are 0.3183098862 candelas per square foot in one foot-lambert, and this value is exact by definition.
How do I convert foot-lamberts to candelas per square foot?
Multiply the number of foot-lamberts by 0.3183098862. For example, 10 fL × 0.3183098862 = 3.183098862 cd/ft².
How many foot-lamberts are in one candela per square foot?
One candela per square foot equals 3.141592654 foot-lamberts. That is the reverse factor, 1 ÷ 0.3183098862.
What is 10 foot-lamberts in candelas per square foot?
10 fL = 3.183098862 cd/ft².
Is this fL to cd/ft² converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.