Photometry
nttoL
Convert nits (nt) to lamberts (L).
Factor1 nt = 0.0003141593 L
Converter
nt
Accepts numbers or expressions, e.g. 150 + 14.7
Result
L
Rendered to 6 significant figures.
Formula
Formula
L = nt × 0.0003141593
Multiply any value in nits by 0.0003141593 to obtain the value in lamberts.
Worked example
Convert 1000 nt to L.
- 01Start with 1000 nt.
- 02Multiply by the conversion factor: 1000 × 0.0003141593 = 0.314159 L.
Result1000 nt = 0.314159 L
Conversion table
| nt | L |
|---|---|
| 1 | 0.00031416 |
| 2 | 0.00062832 |
| 5 | 0.0015708 |
| 10 | 0.0031416 |
| 20 | 0.0062832 |
| 50 | 0.015708 |
| 100 | 0.031416 |
| 200 | 0.062832 |
| 500 | 0.15708 |
| 1000 | 0.31416 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from nt to L?
1 nt equals 0.0003141593 L. To convert, multiply the value in nits by 0.0003141593.
How do I convert 1 nt to L?
1 nt = 0.000314159 L. For any value, multiply by 0.0003141593.
How do I convert L back to nt?
Divide by the same factor — or equivalently, multiply by 3183.099. So 1 L = 3183.1 nt.
When would I need to convert nit to lambert?
Luminance conversions between nt and L are used in display engineering, road and traffic-signal design, and photometric measurement of luminous surfaces. cd/m² (nit) is the SI standard; foot-lambert and stilb appear in legacy datasheets and specialist optics work.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).