Three Calculators in One
LED-to-Bulb Converter helps you with buying the right lamp. Compare the efficience of different lamp types, get a better feeling for Kelvin as a measure for color temperature, and calculate the EU Energy Label classification.
Watt-Lumen Converter
Choose a brightness using the slider on the bottom or enter a Lumen or Watt value. Then, compare the energy consumption of different lamp types.
Color Temperature
Choose a color temperature using the bottom slider or tap the sun to choose a Kelvin value. The background color changes to reflect the chosen color temperature.
EU Energy Label
Enter Watt, Lumen and other lamp parameters to calculate the EU Energy Label class. Compare the old and the new classification side-by-side.
learn moreNew EU Regulation
EU Energy Label 2021
Starting from September 2021 a new energy label will be mandatory for lamps and light sources. In a Medium article we compared the old EU energy label with the new one.
Read on Medium.comGoogle Play and the Google Play logo are trademarks of Google LLC.
Amazon and the Amazon Appstore logo are trademarks of Amazon Inc.
View app's privacy policy