Solar masses to Schwarzschild radius (km)
Type a value in M☉ to get it in km instantly.
12,699,360km
That's about the same as Sagittarius A*. As a black hole its event horizon would be 12,700,000 km in radius.
Convert the other way: km to M☉
What it means
How massive is that?
Non-rotating (Schwarzschild) black hole. Spinning black holes have a smaller event horizon, down to half for maximum spin.
The math
How to convert M☉ to km
To convert solar masses to Schwarzschild radius (km), multiply by 2.95334.
Example: 4,300,000 M☉ × 2.95334 = 12,699,400 km.
In the other direction, 1 km = 0.3386 M☉.
Every unit
That black hole in every unit
Tables
M☉ to km conversion table
| M☉ | km |
|---|---|
| 1 M☉ | 2.95334 km |
| 3 M☉ | 8.86002 km |
| 10 M☉ | 29.5334 km |
| 30 M☉ | 88.6002 km |
| 100 M☉ | 295.334 km |
| 1,000 M☉ | 2,953.34 km |
| 100,000 M☉ | 295,334 km |
| 1,000,000 M☉ | 2,953,340 km |
| 4,300,000 M☉ | 12,699,400 km |
| 100,000,000 M☉ | 295,334,000 km |
| 6.5×10⁹ M☉ | 1.92×10¹⁰ km |
km to M☉ conversion table
| km | M☉ |
|---|---|
| 2.95 km | 0.998869 M☉ |
| 8.86 km | 2.99999 M☉ |
| 29.5 km | 9.98869 M☉ |
| 88.6 km | 29.9999 M☉ |
| 295 km | 99.8869 M☉ |
| 2,950 km | 998.869 M☉ |
| 295,000 km | 99,886.9 M☉ |
| 2,950,000 km | 998,869 M☉ |
| 12,700,000 km | 4,300,220 M☉ |
| 295,000,000 km | 99,886,900 M☉ |
| 1.92×10¹⁰ km | 6.501×10⁹ M☉ |
Quick answers
Quick answers
- How many km is 1 M☉?
- 1 M☉ is 2.95334 km.
- How many km is 10 M☉?
- 10 M☉ is 29.5334 km.
- How many km is 4,300,000 M☉?
- 4,300,000 M☉ is 12,699,400 km.
The units
About these units
Solar masses (M☉)
Mass in units of the Sun.
Schwarzschild radius (km) (km)
Event horizon radius in kilometers.
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