Lux to candela calculator
Lux to candela calculator
What Lux to candela calculator does
The Lux to candela calculator on RapidTables converts illuminance in lux to luminous intensity in candela. Users enter a lux value and a distance, select feet or meters, and the tool outputs the corresponding candela reading. It handles both distance units and provides the underlying formula for reference, making it useful for quick conversions in lighting design or visualization projects.
How to use the RapidTables Lux to candela calculator
- 1
Enter the illuminance value in lux (lx) into the first field
- 2
Input the distance from the light source and choose feet or meters from the dropdown
- 3
Press the Calculate button to generate the luminous intensity in candela (cd)
- 4
Review the result and the displayed formula for verification
- 5
Use the Candela to lux link to reverse the conversion if needed
Best for
Lighting designers, architects, and hobbyists who need to convert lux measurements to candela when the distance from a light source is known.
Limitations
- Requires distance input to calculate candela accurately
- Formula assumes a uniform spherical light distribution
- No support for inverse calculations without the distance parameter
Lux to candela calculator FAQ
- Can I calculate candela from lux without knowing the distance?
- No, the calculator requires a distance value because luminous intensity depends on how spread out the light is over a given area.
- Does the tool work with both feet and meters?
- Yes, you can select either feet or meters for the distance input, and the calculator adjusts the formula accordingly.
- Is the result an exact measurement of a light bulb's output?
- The result is a calculated value based on the lux and distance you enter; real-world bulbs may vary due to design and efficiency.
- What formula does the calculator use?
- For meters, intensity equals lux times distance squared; for feet, intensity equals 0.09290304 times lux times distance squared.