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Units & converters

Luminance converter

Convert luminance between cd/m² or nit, stilb, lambert and foot-lambert.

Free & no registration Calculated in your browser
01

Your inputs

The starting values are an example.

Decimals: 12.5 · Thousands: 1,234.56. Follow the field instructions for lists.

02

Your result

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Formula and example

How it is calculated

Converted value = original value × source factor / target factor

Worked example

500 cd/m² (nit) = 0.05 cd/cm² (stilb).

Things to check

  • Luminance is expressed in units such as cd/m², also known as nit. Changing the unit leaves the observed surface unchanged.
  • Rounding is applied only to displayed results. Very small or very large values may appear in scientific notation.

Sources and references