Convert Foot-lamberts to Kilocandelas per square metre
Convert Foot-lamberts (fL) to Kilocandelas per square metre (kcd/m²) instantly and accurately.
Conversion Formula
kcd/m² = fL × 0.0034262591
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.
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.
Quick Reference Table
| Foot-lamberts (fL) | Kilocandelas per square metre (kcd/m²) |
|---|---|
| 1 fL | 0.00342626 kcd/m² |
| 2 fL | 0.00685252 kcd/m² |
| 5 fL | 0.0171313 kcd/m² |
| 10 fL | 0.0342626 kcd/m² |
| 25 fL | 0.0856565 kcd/m² |
| 50 fL | 0.171313 kcd/m² |
| 100 fL | 0.342626 kcd/m² |