Online Calculators

Online Beam Intensity System Dynamic Range Calculator (less than 7.62 meters)

Use this calculator to get the minimum and maximum amount of light in candela or effective candela either a IL1700 or the IL1400 Radiometer/Photometer can measure at a particular distance less than 7.62 meters (25 feet).

Online Beam Intensity System Dynamic Range Calculator (greater than 7.62 meters)

Use this calculator to get the minimum and maximum amount of light in candela or effective candela either the IL1700 or the IL1400 Radiometer/Photometer can measure at a user-definable distance greater than 7.62 meters (25 feet).

Candela Calculator

Use this calculator if you want to convert an exisiting detector sensitivity factor or an exisiting measurement value, both either in Lux or foot-candles, into Candela or Effective Candela.

Foot-Candle/Lux Converter

Use this converter to either convert your Foot-Candle detector sensitivity factor to Lux or vice-versa for continuous measurement in the opposite unit or convert a single reading already taken in Foot-Candles to Lux or vice-versa.

Online Inverse Square Law Calculator

Use this calculator to find out how an irradiance/illuminance measurement taken at a particular distance from a source will change as the distance to the source increases or decreases.

Online QNDS Self-Calibration Calculator

Use this calculator to obtain a new calibration sensitivity factor for a detector when a neutral density filter (QNDS1, QNDS2 OR QNDS3) is added to the assembly in the field.