Convert Microcandelas per square metre to Foot-lamberts
Convert Microcandelas per square metre (µcd/m²) to Foot-lamberts (fL) instantly and accurately.
Conversion Formula
fL = µcd/m² × 2.918635080e-7
About Microcandelas per square metre
The microcandela per square metre (µcd/m²) equals 10⁻⁶ cd/m². Used in precision dark-sky photometry and in measuring the luminance of unlit passive surfaces. OLED deep-black levels are typically 0.0001-0.01 cd/m², about 100-10 000 times larger than this scale. 1 µcd/m² = 10⁻⁶ 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
| Microcandelas per square metre (µcd/m²) | Foot-lamberts (fL) |
|---|---|
| 1 µcd/m² | 2.919 × 10-7 fL |
| 2 µcd/m² | 5.837 × 10-7 fL |
| 5 µcd/m² | 1.459 × 10-6 fL |
| 10 µcd/m² | 2.919 × 10-6 fL |
| 25 µcd/m² | 7.297 × 10-6 fL |
| 50 µcd/m² | 1.459 × 10-5 fL |
| 100 µcd/m² | 2.919 × 10-5 fL |