Convert Millilamberts to Foot-lamberts
Convert Millilamberts (mL) to Foot-lamberts (fL) instantly and accurately.
Conversion Formula
fL = mL × 0.9290304
About Millilamberts
The millilambert (mL) equals 10/π cd/m² ≈ 3.183 cd/m². Historically used in the United States to specify projection screen luminance and oscilloscope phosphor brightness. A projection screen with luminance 1 mL ≈ 3.18 cd/m². Largely superseded by cd/m² and foot-lamberts in modern display standards. 1 mL = 10/π cd/m².
About Foot-lamberts
The foot-lambert (fL) equals 1/(π×0.09290304) cd/m² ≈ 3.426 cd/m², the luminance of a perfect diffuse surface emitting 1 lumen per square foot. The SMPTE standard for cinema screen luminance is 14 fL (≈48 cd/m²); home projectors are rated 10-35 fL. Still standard in US cinema and theatre engineering. 1 fL = 1/(π×ft²) cd/m².
Quick Reference Table
| Millilamberts (mL) | Foot-lamberts (fL) |
|---|---|
| 1 mL | 0.92903 fL |
| 2 mL | 1.85806 fL |
| 5 mL | 4.64515 fL |
| 10 mL | 9.2903 fL |
| 25 mL | 23.2258 fL |
| 50 mL | 46.4515 fL |
| 100 mL | 92.903 fL |