Convert between different units of luminance (brightness) used in photometry, display technology, and lighting engineering.

1. Enter Value

Type the value you want to convert.

2. Select Units

• From: Select the source unit (e.g., candela/square meter).
• To: Select the destination unit (e.g., foot-lambert).

3. Result

The converted value is displayed instantly.

• Candela per square meter (cd/m²): The SI unit of luminance, also known as the Nit (nt).
• Nit (nt): Commonly used in display technology (phones, monitors). 1 nt = 1 cd/m².
• Stilb (sb): CGS unit. 1 sb = 10,000 cd/m².
• Lambert (L): Non-SI unit.
• Foot-lambert (fL): Common in the US for cinema screens and avionics.
• Apostilb (asb)
• Skot
• Bril

• Display Tech: Comparing screen brightness (usually in nits).
• Cinema: Projector brightness is often measured in foot-lamberts.
• Lighting Design: Ensuring consistent lighting levels in architectural projects.
• Physics & Engineering: converting between scientific measurement systems.

We use precise conversion factors to ensure accuracy for scientific and engineering applications. For example, 1 foot-lambert is approximately 3.426 nits.