Millicandela to lumens calculator
Millicandela to lumens calculator
What Millicandela to lumens calculator does
The Millicandela to lumens calculator on RapidTables converts luminous intensity from millicandela to lumens by applying the photometric formula that accounts for the solid angle of the light source. Users input a millicandela value and an apex angle in degrees, and the tool computes the resulting luminous flux in lumens. The page also supports the reverse calculation, allowing conversion from lumens back to millicandela, and includes links to related calculators for candela, lux, and watt conversions within the same interface.
How to use the RapidTables Millicandela to lumens calculator
- 1
Enter the luminous intensity value in millicandela (mcd)
- 2
Input the apex angle in degrees to define the solid angle
- 3
Click the Calculate button to obtain the luminous flux in lumens (lm)
- 4
Use the reverse fields to convert lumens back to millicandela if needed
- 5
Review the displayed formula and solid angle steradian explanation for verification
Best for
Lighting designers, engineers, and hobbyists who need to convert between millicandela and lumens for uniform, isotropic light sources when the viewing angle is known.
Limitations
- Requires knowledge of the apex angle for accurate conversion
- Assumes an isotropic light distribution pattern
- Results are estimates based on the entered angle value
Millicandela to lumens calculator FAQ
- What formula does the Millicandela to lumens calculator use?
- The calculator uses the formula lumens = millicandela × (2 × π × (1 - cos(apex angle / 2))) ÷ 1000, which accounts for the solid angle in steradians based on the entered apex angle in degrees.
- Can I convert lumens back to millicandela using this tool?
- Yes, the page includes a reverse calculator that converts lumens to millicandela by rearranging the same formula, requiring the user to input the luminous flux in lumens and the apex angle in degrees.
- Do I need to know the solid angle in steradians to use this calculator?
- The tool calculates the solid angle in steradians automatically from the apex angle you enter in degrees, so you do not need to manually convert or know the steradian value beforehand.
- Is this calculator suitable for non-isotropic light sources?
- The calculator assumes a uniform, isotropic light distribution pattern; for non-isotropic sources, the actual lumen output may differ from the calculated result.