Luminous Flux Converters
Convert between luminous flux units used in lighting specifications and LED output ratings. This hub covers total visible light output in lm, klm, and Mlm using exact SI prefix scaling.
Explanation
Luminous flux is the total visible light output emitted by a source and is measured in lumens (lm), the SI unit of luminous flux. In this hub, all units are normalized through lumens with exact base-10 prefix scaling. Exact definitions include 1 klm = 1,000 lm and 1 Mlm = 1,000,000 lm. These conversions are purely multiplicative with no offsets, so mirror pages remain mathematically stable and reversible. For clarity, luminous flux conversions in this hub are grouped by SI base-to-prefix and prefix-to-prefix relationships.
Frequently Asked Questions
What is a lumen?
A lumen is the SI unit of luminous flux and represents the total perceived visible light emitted by a source.
What is the SI unit of luminous flux?
The SI unit of luminous flux is the lumen (lm).
How many lumens are in 1 kilolumen?
Exactly 1,000 lumens.
How many lumens are in 1 megalumen?
Exactly 1,000,000 lumens.
Are luminous flux conversions multiplicative?
Yes. SI prefix conversions are purely multiplicative with no offsets.
How do I switch direction?
Use the switch button to navigate directly to the mirror page for the reverse conversion.