LED-to-Bulb Converter - Lumen, Watt, Kelvin

Three calculators in one app

The LED-to-Bulb Converter helps you when shopping for light bulbs. Compare the luminous efficacy and energy consumption of a lamp with the conventional, classic light bulb, which is now banned in the EU for private households. Also calculate the EU energy consumption class and get a feel for the color temperature of a lamp.

Lumen-Wattage Calculator

Select a brightness using the slider or enter the desired watts or lumens. Then compare the energy consumption of different lamp types for the set brightness.

Color Temperature

Select a color temperature with the slider or touch the sun to select the desired value from a list of Kelvin values. The background color is displayed accordingly.

EU Energy Label

Compare the old and the new EU energy label. Since September 2021 there is a new EU energy label for lamps. Enter watts, lumens and other lamp parameters to calculate the energy consumption class of both scales.