About Led-to-Bulb Converter
LED-to-Bulb Converter is a free app which compares Watt values of LED lamps, light bulbs, compact fluorescent lamps (energy saving lamps), and halogen lamps and their typical corresponding brightness in Lumen (lm). The...
LED-to-Bulb Converter is a free app which compares Watt values of LED lamps, light bulbs, compact fluorescent lamps (energy saving lamps), and halogen lamps and their typical corresponding brightness in Lumen (lm). The app helps you to choose new LED or energy saving lamps which are approximately as bright as the good old light bulb.
In addition to the Lumen-Watt calculator, the app offers a calculator for the old and new EU energy labels for LED bulbs and other light sources. The old energy label scale ranged from A++ to E while the new one ranges from A to G. The scales cannot be easily mapped from the old class to the new one. The energy label calculator compares both scales side-by-side. The new scale will be mandatory for light sources starting from September 2021.
Finally, the app also offers a scale to get a feeling for the color temperature of lamps (measured in Kelvin).
Please note that the lumen-per-watt-values are only approximate average values and may vary from lamp type to lamp type!
Links to selected external websites lead to pages providing more information about Lumen, Kelvin, Light bulb sockets and screws (e.g. Edison Screw (E27, E14, E10, etc.) and the EU energy label.
While Watt is a unit of power, Lumen is a unit of luminous flux. Lumen measures the total quantity of visible light emitted by a light source per time.
This app can be downloaded for free, but it contains ads. The ads can be removed by making an in-app purchase. A small compensation for our efforts. Thank you for your understanding and for your support.
Previous Versions
Here you can find the changelog of Led-to-Bulb Converter since it was posted on our website on 2013-08-23 16:16:39.
The latest version is 3.5.2g and it was updated on 2024-04-01 22:22:58. See below the changes in each version.
Led-to-Bulb Converter version 3.5.2g
Updated At: 2023-09-23
Changes: Adaptations for new Android versions.
Led-to-Bulb Converter version 3.5.1g
Updated At: 2021-05-16
Changes: Bug fixes and improved privacy-friendlyness
Led-to-Bulb Converter version 3.5g
Updated At: 2021-04-11
Changes: Calculator for old and new EU Energy Label
Led-to-Bulb Converter version 3.4
Updated At: 2021-01-19
Changes: - Support for dark mode
- New icon, new colors
Led-to-Bulb Converter version 3.3.1
Updated At: 2021-01-01
Changes: Fixed issue with in-app purchase
Led-to-Bulb Converter version 3.3
Updated At: 2020-12-29
Changes: - Extended max. lumen range to 3000.
- Added selection of predefined Kelvin values by tapping the sun.
- Updated LED efficiency categories.
- Crash fixes and UI improvements.
Led-to-Bulb Converter version 3.1
Updated At: 2018-05-24
Led-to-Bulb Converter version 3.0
Updated At: 2017-03-14
Changes: Enter Lumen and Watt values with keyboard or select from a list of typical values.
Led-to-Bulb Converter version 2.3
Updated At: 2013-06-02
Changes: Several fixes and updates
Led-to-Bulb Converter version 2.3
Updated At: 2013-06-02
Changes: Added new lamp type.
Disclaimer
Official Google Play Link
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