Screen brightness calculator
- Screen
- 2.21 × 1.25 m
- 2.76 m²
- Luminance
- 231 cd/m²
- Foot-lamberts
- 67.4 fL
- vs 14 fL cinema
- 481 %
Show the numbers
| ST 431-1 · 14 fL | SMPTE ST 431-1:2006 digital cinema, 48.0 cd/m² nominal |
|---|---|
| SMPTE 196M · 16 fL | SMPTE 196M film projection, open gate, 16 fL ≈ 55 cd/m² |
| 30 fL | Upper end of the 16–30 fL home-theatre SDR range in our glossary |
| PQ max | SMPTE ST 2084 PQ signal range tops out at 10,000 cd/m² |
| Formula | L = lumens × gain ÷ (π × area m²); 1 fL = 3.426 cd/m² |
Idealised: uses the full rated lumens, a Lambertian-equivalent gain and no ambient light, so real measured nits will be lower. Dashed lines are published reference levels (see the numbers). The 30 fL line is the top of our glossary's 16–30 fL home-theatre range, not a standard.