Lumens to watts at 555 nm
Type a value in lm to get it in W instantly.
1.171W
That's about the same as a 60 W bulb. A modern LED would need about 8 W to produce it.
Convert the other way: W to lm
What it means
How much light is that?
Lumens measure total light emitted. How bright a room feels also depends on the area lit, which is measured in lux.
The math
How to convert lm to W
To convert lumens to watts at 555 nm, multiply by 0.00146413.
Example: 800 lm × 0.00146413 = 1.1713 W.
In the other direction, 1 W = 683 lm.
Every unit
Your output in every unit
Tables
lm to W conversion table
| lm | W |
|---|---|
| 100 lm | 0.146413 W |
| 250 lm | 0.366032 W |
| 400 lm | 0.585652 W |
| 600 lm | 0.878477 W |
| 800 lm | 1.1713 W |
| 1,000 lm | 1.46413 W |
| 1,500 lm | 2.19619 W |
| 2,000 lm | 2.92826 W |
| 3,000 lm | 4.39239 W |
| 5,000 lm | 7.32064 W |
W to lm conversion table
| W | lm |
|---|---|
| 100 W | 68,300 lm |
| 250 W | 170,750 lm |
| 400 W | 273,200 lm |
| 600 W | 409,800 lm |
| 800 W | 546,400 lm |
| 1,000 W | 683,000 lm |
| 1,500 W | 1,024,500 lm |
| 2,000 W | 1,366,000 lm |
| 3,000 W | 2,049,000 lm |
| 5,000 W | 3,415,000 lm |
Quick answers
Quick answers
- How many W is 1 lm?
- 1 lm is 0.00146413 W.
- How many W is 10 lm?
- 10 lm is 0.0146413 W.
- How many W is 800 lm?
- 800 lm is 1.1713 W.
The units
About these units
Lumens (lm)
The total visible light from a source, weighted for the eye’s response.
Watts at 555 nm (W)
Radiant power at the eye’s peak sensitivity: one watt there is 683 lumens.
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