Mass per volume density.
Grains per Cubic Millimeter to Stones per Pint Converter — gr/mm3 to st/pt
Convert Grain per Cubic Millimeter (gr/mm3) to Stone per Pint (st/pt) using the exact conversion factor (1 grain per cubic millimeter = 4.828331357 stone per pint). See the formula, worked examples, and conversion table.
Grains per Cubic Millimeter to Stones per Pint 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 / 13420.55986.
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 Pint
Grain per Cubic Millimeter and Stone per Pint 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 pint = grains per cubic millimeter × 4.82833135714
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 pint equals 13420.5598595 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-stone per pint factor of 4.82833135714.
Simple example
1 gr/mm3 × 4.828331357 = 4.828331357 st/pt
1 grain per cubic millimeter = 4.828331357 stones per pint.
Real-world example
1,000 gr/mm3 × 4.828331357 = 4,828.331357 st/pt
1,000 grains per cubic millimeter = 4,828.331357 stones per pint.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Stone per Pint (st/pt) |
|---|---|
| 0.1 gr/mm3 | 0.4828331357 st/pt |
| 1 gr/mm3 | 4.828331357 st/pt |
| 10 gr/mm3 | 48.28331357 st/pt |
| 100 gr/mm3 | 482.8331357 st/pt |
| 1,000 gr/mm3 | 4,828.331357 st/pt |
| 10,000 gr/mm3 | 48,283.31357 st/pt |
Reverse conversion: Stone per Pint to Grain per Cubic Millimeter
4.828331357 st/pt × 0.207110889 = 1 gr/mm3
4.828331357 stones per pint = 1 grains per cubic millimeter.
grains per cubic millimeter = stones per pint × 0.207110889049
For a page dedicated to this direction, see Stone per Pint to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per pint are in 1 grain per cubic millimeter?
1 grain per cubic millimeter equals 4.828331357 stones per pint, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to stone per pint?
Multiply the grain per cubic millimeter value by 4.828331357. The converter above does this instantly to whatever precision you set.
How do I convert stone per pint back to grain per cubic millimeter?
Use the reverse factor: 1 stone per pint equals 0.207110889 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 pint?
Stone per Pint (st/pt) is a unit of density.
Is the grain per cubic millimeter to stone per pint conversion exact?
Yes. Both grain per cubic millimeter and stone per pint are defined by fixed standards rather than physical artifacts, so the factor of 4.828331357 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.