Mass per volume density.
Grains per Cubic Millimeter to Stones per Cubic Millimeter Converter — gr/mm3 to st/mm3
Convert Grain per Cubic Millimeter (gr/mm3) to Stone per Cubic Millimeter (st/mm3) using the exact conversion factor (1 grain per cubic millimeter = 0.0000102041 stone per cubic millimeter). See the formula, worked examples, and conversion table.
Grains per Cubic Millimeter to Stones per Cubic Millimeter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 64798.91 / 6.35029318e+9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic Millimeter to Stones per Cubic Millimeter
Grain per Cubic Millimeter and Stone per Cubic Millimeter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
stones per cubic millimeter = grains per cubic millimeter × 0.0000102040816327
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic millimeter equals 64798.91 base units, and 1 stone per cubic millimeter equals 6350293180 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-stone per cubic millimeter factor of 0.0000102040816327.
Simple example
1 gr/mm3 × 0.00001020408163 = 0.0000102041 st/mm3
1 grain per cubic millimeter = 0.0000102041 stones per cubic millimeter.
Real-world example
1,000 gr/mm3 × 0.00001020408163 = 0.0102040816 st/mm3
1,000 grains per cubic millimeter = 0.0102040816 stones per cubic millimeter.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Stone per Cubic Millimeter (st/mm3) |
|---|---|
| 0.1 gr/mm3 | 0.0000010204 st/mm3 |
| 1 gr/mm3 | 0.0000102041 st/mm3 |
| 10 gr/mm3 | 0.0001020408 st/mm3 |
| 100 gr/mm3 | 0.0010204082 st/mm3 |
| 1,000 gr/mm3 | 0.0102040816 st/mm3 |
| 10,000 gr/mm3 | 0.1020408163 st/mm3 |
Reverse conversion: Stone per Cubic Millimeter to Grain per Cubic Millimeter
0.0000102041 st/mm3 × 98000 = 1.0000018 gr/mm3
0.0000102041 stones per cubic millimeter = 1.0000018 grains per cubic millimeter.
grains per cubic millimeter = stones per cubic millimeter × 98000
For a page dedicated to this direction, see Stone per Cubic Millimeter to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Understanding the Stone per Cubic Millimeter (st/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic millimeter are in 1 grain per cubic millimeter?
1 grain per cubic millimeter equals 0.0000102041 stones per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to stone per cubic millimeter?
Multiply the grain per cubic millimeter value by 0.00001020408163. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic millimeter back to grain per cubic millimeter?
Use the reverse factor: 1 stone per cubic millimeter equals 98,000 grains per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) is a unit of density.
What is a stone per cubic millimeter?
Stone per Cubic Millimeter (st/mm3) is a unit of density.
Is the grain per cubic millimeter to stone per cubic millimeter conversion exact?
Yes. Both grain per cubic millimeter and stone per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.00001020408163 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.