Solar luminosities to absolute bolometric magnitude
Type a value in L☉ to get it in M_bol instantly.
4.74M_bol
That's about the same as the Sun. That would run about 1.276×10¹⁴ of the world’s electricity grids.
Convert the other way: M_bol to L☉
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 L☉ to M_bol
Absolute bolometric magnitude is logarithmic and backwards: M = 4.74 − 2.5 × log₁₀(L ÷ L☉), and back again L = 10^((4.74 − M) ÷ 2.5).
Example: 1 L☉ = 4.74 M_bol.
Every unit
Your luminosity in every unit
Tables
L☉ to M_bol conversion table
| L☉ | M_bol |
|---|---|
| 0.0001 L☉ | 14.74 M_bol |
| 0.01 L☉ | 9.74 M_bol |
| 0.1 L☉ | 7.24 M_bol |
| 1 L☉ | 4.74 M_bol |
| 10 L☉ | 2.24 M_bol |
| 100 L☉ | -0.26 M_bol |
| 10,000 L☉ | -5.26 M_bol |
| 1,000,000 L☉ | -10.26 M_bol |
| 1×10⁹ L☉ | -17.76 M_bol |
| 1×10¹² L☉ | -25.26 M_bol |
M_bol to L☉ conversion table
| M_bol | L☉ |
|---|---|
| -25.3 M_bol | 1.038×10¹² L☉ |
| -17.8 M_bol | 1.038×10⁹ L☉ |
| -10.3 M_bol | 1,037,530 L☉ |
| -5.26 M_bol | 10,000 L☉ |
| -0.26 M_bol | 100 L☉ |
| 2.24 M_bol | 10 L☉ |
| 4.74 M_bol | 1 L☉ |
| 7.24 M_bol | 0.1 L☉ |
| 9.74 M_bol | 0.01 L☉ |
| 14.7 M_bol | 0.000103753 L☉ |
Quick answers
Quick answers
- How many M_bol is 1 L☉?
- 1 L☉ is 4.74 M_bol.
- How many M_bol is 10 L☉?
- 10 L☉ is 2.24 M_bol.
The units
About these units
Solar luminosities (L☉)
The Sun’s output, 3.83 × 10²⁶ W.
Absolute bolometric magnitude (M_bol)
The logarithmic scale, running backwards as magnitudes do.
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