Mass per volume density.
Grains per Pint to Grains per Cup Converter — gr/pt to gr/cup
Convert Grain per Pint (gr/pt) to Grain per Cup (gr/cup) using the exact conversion factor (1 grain per pint = 0.5 grain per cup). See the formula, worked examples, and conversion table.
Grains per Pint to Grains per Cup 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 0.1369444884 / 0.2738889767.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Pint to Grains per Cup
Grain per Pint and Grain per Cup 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
grains per cup = grains per pint × 0.5
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per pint equals 0.136944488362 base units, and 1 grain per cup equals 0.273888976724 base units, so dividing one by the other gives the direct grain per pint-to-grain per cup factor of 0.5.
Simple example
1 gr/pt × 0.5 = 0.5 gr/cup
1 grain per pint = 0.5 grains per cup.
Real-world example
1,000 gr/pt × 0.5 = 500 gr/cup
1,000 grains per pint = 500 grains per cup.
Conversion table
| Grain per Pint (gr/pt) | Grain per Cup (gr/cup) |
|---|---|
| 0.1 gr/pt | 0.05 gr/cup |
| 1 gr/pt | 0.5 gr/cup |
| 10 gr/pt | 5 gr/cup |
| 100 gr/pt | 50 gr/cup |
| 1,000 gr/pt | 500 gr/cup |
| 10,000 gr/pt | 5,000 gr/cup |
Reverse conversion: Grain per Cup to Grain per Pint
0.5 gr/cup × 2 = 1 gr/pt
0.5 grains per cup = 1 grain per pint.
grains per pint = grains per cup × 2
For a page dedicated to this direction, see Grain per Cup to Grain per Pint.
Understanding the Grain per Pint (gr/pt)
Mass per volume density.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cup are in 1 grain per pint?
1 grain per pint equals 0.5 grains per cup, using the exact defined conversion factor rather than an estimate.
How do I convert grain per pint to grain per cup?
Multiply the grain per pint value by 0.5. The converter above does this instantly to whatever precision you set.
How do I convert grain per cup back to grain per pint?
Use the reverse factor: 1 grain per cup equals 2 grains per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per pint?
Grain per Pint (gr/pt) is a unit of density.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
Is the grain per pint to grain per cup conversion exact?
Yes. Both grain per pint and grain per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.5 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.