5 units · base unit lm · J
Luminous flux converter
Lumens measure total light output, which is why bulbs are now sold by lumen rather than watt.
1000lm
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1 klm = 1000 lm
Show this value in all 5 luminous flux units
- Megalumens Mlm 0.001
- Kilolumens klm 1
- Lumens lm 1000
- Millilumens mlm 1 000 000
- Candela steradians cd·sr 1000
Every row is Kilolumen (klm) converted through the lumen, in exact rational arithmetic.
Common luminous flux conversions
- klm → lm
- klm → mlm
- klm → cd·sr
- lm → klm
- lm → mlm
- lm → cd·sr
- mlm → klm
- mlm → lm
- mlm → cd·sr
- cd·sr → klm
- cd·sr → lm
- cd·sr → mlm
All luminous flux units
Each unit expressed in lumens (lm), the unit everything in this category converts through.
| Unit | Symbol | System | Value in lm |
|---|---|---|---|
| Megalumen | Mlm | metric | 1000000 |
| Kilolumen | klm | metric | 1000 |
| Lumen | lm | SI | 1 |
| Millilumen | mlm | metric | 0.001 |
| Candela steradian | cd·sr | SI | 1 |
About luminous flux units
Convert lumens, kilolumens and candela-steradians.
Lumens measure total light output, which is why bulbs are now sold by lumen rather than watt.
Dimensional formula: J. Every conversion on this page goes through the lumen, using exact fractions rather than decimal approximations. Read how that works →