Watts to solar luminosities
Type a value in W to get it in L☉ instantly.
2.612×10⁻²⁷L☉
Nothing on our list is smaller: a red dwarf is 650,760,000,000,000,000,000,000× brighter. That would run about 3.333×10⁻¹³ of the world’s electricity grids.
Convert the other way: L☉ to W
What it means
How much light is that?
This is bolometric luminosity: all the radiation, not just visible light. A cool red star emits most of its output in infrared.
The math
How to convert W to L☉
To convert watts to solar luminosities, multiply by 2.612×10⁻²⁷.
Example: 1 W × 2.612×10⁻²⁷ = 2.612×10⁻²⁷ L☉.
In the other direction, 1 L☉ = 3.828×10²⁶ W.
Every unit
Your luminosity in every unit
Tables
W to L☉ conversion table
| W | L☉ |
|---|---|
| 0.0001 W | 2.612×10⁻³¹ L☉ |
| 0.01 W | 2.612×10⁻²⁹ L☉ |
| 0.1 W | 2.612×10⁻²⁸ L☉ |
| 1 W | 2.612×10⁻²⁷ L☉ |
| 10 W | 2.612×10⁻²⁶ L☉ |
| 100 W | 2.612×10⁻²⁵ L☉ |
| 10,000 W | 2.612×10⁻²³ L☉ |
| 1,000,000 W | 2.612×10⁻²¹ L☉ |
| 1×10⁹ W | 2.612×10⁻¹⁸ L☉ |
| 1×10¹² W | 2.612×10⁻¹⁵ L☉ |
L☉ to W conversion table
| L☉ | W |
|---|---|
| 0.0001 L☉ | 3.828×10²² W |
| 0.01 L☉ | 3.828×10²⁴ W |
| 0.1 L☉ | 3.828×10²⁵ W |
| 1 L☉ | 3.828×10²⁶ W |
| 10 L☉ | 3.828×10²⁷ W |
| 100 L☉ | 3.828×10²⁸ W |
| 10,000 L☉ | 3.828×10³⁰ W |
| 1,000,000 L☉ | 3.828×10³² W |
| 1×10⁹ L☉ | 3.828×10³⁵ W |
| 1×10¹² L☉ | 3.828×10³⁸ W |
Quick answers
Quick answers
- How many L☉ is 1 W?
- 1 W is 2.612×10⁻²⁷ L☉.
- How many L☉ is 10 W?
- 10 W is 2.612×10⁻²⁶ L☉.
The units
About these units
Watts (W)
The SI unit, needing scientific notation out here.
Solar luminosities (L☉)
The Sun’s output, 3.83 × 10²⁶ W.
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