Luminance Converter
Convert luminance between cd/m² (nits), stilb, lambert and foot-lambert.
Luminance — the brightness of a surface as the eye perceives it — is what display specs mean by "nits" (candela per square meter). A typical laptop screen is 300–400 nits; an HDR TV peaks over 1,000. Projector and cinema brightness, though, is often quoted in foot-lamberts, and older references use stilb and lambert.
This converter moves any luminance between cd/m² (nits), kilocandela/m², stilb, lambert and foot-lambert, so display, projector and lighting figures can be compared directly.
How to use Luminance Converter
- 1
Enter a value
Type the amount you want to convert.
- 2
Choose the source unit
Pick the unit you're converting from.
- 3
Choose the target unit
The converted value appears instantly.
Features
- Instant bidirectional conversion
- Standards-based conversion factors
- Precise results as you type
Frequently asked questions
Common mistakes to avoid
- Mixing up unit prefixes across several orders of magnitude.
- Confusing similar-looking units from different measurement systems.
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