Mass per volume density.
Milligrams per Pint to Grains per Cup Converter — mg/pt to gr/cup
Convert Milligram per Pint (mg/pt) to Grain per Cup (gr/cup) using the exact conversion factor (1 milligram per pint = 0.0077161792 grain per cup). See the formula, worked examples, and conversion table.
Milligrams 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 0.002113376419 / 0.2738889767.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Pint to Grains per Cup
Milligram 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 = milligrams per pint × 0.00771617917647
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per pint equals 0.00211337641887 base units, and 1 grain per cup equals 0.273888976724 base units, so dividing one by the other gives the direct milligram per pint-to-grain per cup factor of 0.00771617917647.
Simple example
1 mg/pt × 0.007716179176 = 0.0077161792 gr/cup
1 milligram per pint = 0.0077161792 grains per cup.
Real-world example
1,000 mg/pt × 0.007716179176 = 7.716179176 gr/cup
1,000 milligrams per pint = 7.716179176 grains per cup.
Conversion table
| Milligram per Pint (mg/pt) | Grain per Cup (gr/cup) |
|---|---|
| 0.1 mg/pt | 0.0007716179 gr/cup |
| 1 mg/pt | 0.0077161792 gr/cup |
| 10 mg/pt | 0.0771617918 gr/cup |
| 100 mg/pt | 0.7716179176 gr/cup |
| 1,000 mg/pt | 7.716179176 gr/cup |
| 10,000 mg/pt | 77.16179176 gr/cup |
Reverse conversion: Grain per Cup to Milligram per Pint
0.0077161792 gr/cup × 129.59782 = 1.000000003 mg/pt
0.0077161792 grains per cup = 1.000000003 milligrams per pint.
milligrams per pint = grains per cup × 129.59782
For a page dedicated to this direction, see Grain per Cup to Milligram per Pint.
Understanding the Milligram per Pint (mg/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 milligram per pint?
1 milligram per pint equals 0.0077161792 grains per cup, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per pint to grain per cup?
Multiply the milligram per pint value by 0.007716179176. The converter above does this instantly to whatever precision you set.
How do I convert grain per cup back to milligram per pint?
Use the reverse factor: 1 grain per cup equals 129.59782 milligrams per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per pint?
Milligram per Pint (mg/pt) is a unit of density.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
Is the milligram per pint to grain per cup conversion exact?
Yes. Both milligram per pint and grain per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.007716179176 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.