Solar mass is used in astronomy.
Solar mass to Grains Converter — Msun to gr
Convert Solar mass (Msun) to Grain (gr) using the exact conversion factor (1 solar mass = 3.068678e+34 grain). See the formula, worked examples, and conversion table.
Solar mass to Grains converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
A grain is exactly 64.79891 milligrams.
Result = input x 1.98847e+30 / 6.479891e-5.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Solar mass to Grains
Weight conversions between Solar mass and Grain come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: Solar mass is used in astronomy, and a grain is exactly 64.79891 milligrams.
Formula
grains = solar mass × 3.068678e+34
This factor comes from each unit's defined relationship to the category's base unit: 1 solar mass equals 1.98847e+30 base units, and 1 grain equals 0.00006479891 base units, so dividing one by the other gives the direct solar mass-to-grain factor of 3.068678e+34.
Simple example
1 Msun × 3.068678e+34 = 3.068678e+34 gr
1 solar mass = 3.068678e+34 grains.
Real-world example
50 Msun × 3.068678e+34 = 1.534339e+36 gr
50 solar mass = 1.534339e+36 grains.
Conversion table
| Solar mass (Msun) | Grain (gr) |
|---|---|
| 1 Msun | 3.068678e+34 gr |
| 5 Msun | 1.534339e+35 gr |
| 10 Msun | 3.068678e+35 gr |
| 25 Msun | 7.671695e+35 gr |
| 50 Msun | 1.534339e+36 gr |
| 100 Msun | 3.068678e+36 gr |
Reverse conversion: Grain to Solar mass
3.068678e+34 gr × 3.258732e-35 = 0.9999999474 Msun
3.068678e+34 grains = 0.9999999474 solar mass.
solar mass = grains × 3.258732e-35
For a page dedicated to this direction, see Grain to Solar mass.
Understanding the Solar mass (Msun)
Solar mass is used in astronomy.
Understanding the Grain (gr)
A grain is exactly 64.79891 milligrams.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains are in 1 solar mass?
1 solar mass equals 3.068678e+34 grains, using the exact defined conversion factor rather than an estimate.
How do I convert solar mass to grain?
Multiply the solar mass value by 3.068678e+34. The converter above does this instantly to whatever precision you set.
How do I convert grain back to solar mass?
Use the reverse factor: 1 grain equals 3.258732e-35 solar mass. You can also use the swap control in the converter above to flip the direction instantly.
What is a solar mass?
Solar mass (Msun) is a unit of mass/weight.
What is a grain?
Grain (gr) is a unit of mass/weight.
Is the solar mass to grain conversion exact?
Yes. Both solar mass and grain are defined by fixed standards rather than physical artifacts, so the factor of 3.068678e+34 used above is exact to as many digits as you choose to display.