Mass per volume density.
Grains per Gallon to Stones per Pint Converter — gr/gal to st/pt
Convert Grain per Gallon (gr/gal) to Stone per Pint (st/pt) using the exact conversion factor (1 grain per gallon = 0.0000012755 stone per pint). See the formula, worked examples, and conversion table.
Grains per Gallon 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 0.01711806105 / 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 Gallon to Stones per Pint
Grain per Gallon 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 gallon × 0.00000127551020408
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per gallon equals 0.0171180610453 base units, and 1 stone per pint equals 13420.5598595 base units, so dividing one by the other gives the direct grain per gallon-to-stone per pint factor of 0.00000127551020408.
Simple example
1 gr/gal × 0.000001275510204 = 0.0000012755 st/pt
1 grain per gallon = 0.0000012755 stones per pint.
Real-world example
1,000 gr/gal × 0.000001275510204 = 0.0012755102 st/pt
1,000 grains per gallon = 0.0012755102 stones per pint.
Conversion table
| Grain per Gallon (gr/gal) | Stone per Pint (st/pt) |
|---|---|
| 0.1 gr/gal | 1.27551e-7 st/pt |
| 1 gr/gal | 0.0000012755 st/pt |
| 10 gr/gal | 0.0000127551 st/pt |
| 100 gr/gal | 0.000127551 st/pt |
| 1,000 gr/gal | 0.0012755102 st/pt |
| 10,000 gr/gal | 0.012755102 st/pt |
Reverse conversion: Stone per Pint to Grain per Gallon
0.0000012755 st/pt × 784000 = 0.999992 gr/gal
0.0000012755 stones per pint = 0.999992 grains per gallon.
grains per gallon = stones per pint × 784000
For a page dedicated to this direction, see Stone per Pint to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
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 gallon?
1 grain per gallon equals 0.0000012755 stones per pint, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to stone per pint?
Multiply the grain per gallon value by 0.000001275510204. The converter above does this instantly to whatever precision you set.
How do I convert stone per pint back to grain per gallon?
Use the reverse factor: 1 stone per pint equals 784,000 grains per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per gallon?
Grain per Gallon (gr/gal) 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 gallon to stone per pint conversion exact?
Yes. Both grain per gallon and stone per pint are defined by fixed standards rather than physical artifacts, so the factor of 0.000001275510204 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.