Convert Kilocandelas per square metre to Foot-lamberts
Convert Kilocandelas per square metre (kcd/m²) to Foot-lamberts (fL) instantly and accurately.
Conversion Formula
fL = kcd/m² × 291.863508
About Kilocandelas per square metre
The kilocandela per square metre (kcd/m²) equals 1 000 cd/m². The scale for HDR displays and high-brightness monitors: VESA DisplayHDR 1000 requires 1 kcd/m² peak; professional HDR mastering monitors reach 1-4 kcd/m²; an overcast sky measures ~3-8 kcd/m²; a fluorescent tube ~7 kcd/m². 1 kcd/m² = 10³ 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
| Kilocandelas per square metre (kcd/m²) | Foot-lamberts (fL) |
|---|---|
| 1 kcd/m² | 291.864 fL |
| 2 kcd/m² | 583.727 fL |
| 5 kcd/m² | 1459.32 fL |
| 10 kcd/m² | 2918.64 fL |
| 25 kcd/m² | 7296.59 fL |
| 50 kcd/m² | 14593.2 fL |
| 100 kcd/m² | 29186.4 fL |