Mass per volume density.
Grain per Cubic inches to Pounds per Pint Converter — gr/in3 to lb/pt
Convert Grain per Cubic inch (gr/in3) to Pound per Pint (lb/pt) using the exact conversion factor (1 grain per cubic inch = 0.004125 pound per pint). See the formula, worked examples, and conversion table.
Grain per Cubic inches to Pounds 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 3.954272101 / 958.6114185.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grain per Cubic inches to Pounds per Pint
Grain per Cubic inch and Pound 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
pounds per pint = grain per cubic inches × 0.004125
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic inch equals 3.95427210146 base units, and 1 pound per pint equals 958.611418535 base units, so dividing one by the other gives the direct grain per cubic inch-to-pound per pint factor of 0.004125.
Simple example
1 gr/in3 × 0.004125 = 0.004125 lb/pt
1 grain per cubic inch = 0.004125 pounds per pint.
Real-world example
1,000 gr/in3 × 0.004125 = 4.125 lb/pt
1,000 grain per cubic inches = 4.125 pounds per pint.
Conversion table
| Grain per Cubic inch (gr/in3) | Pound per Pint (lb/pt) |
|---|---|
| 0.1 gr/in3 | 0.0004125 lb/pt |
| 1 gr/in3 | 0.004125 lb/pt |
| 10 gr/in3 | 0.04125 lb/pt |
| 100 gr/in3 | 0.4125 lb/pt |
| 1,000 gr/in3 | 4.125 lb/pt |
| 10,000 gr/in3 | 41.25 lb/pt |
Reverse conversion: Pound per Pint to Grain per Cubic inch
0.004125 lb/pt × 242.4242424 = 1 gr/in3
0.004125 pounds per pint = 1 grain per cubic inches.
grain per cubic inches = pounds per pint × 242.424242424
For a page dedicated to this direction, see Pound per Pint to Grain per Cubic inch.
Understanding the Grain per Cubic inch (gr/in3)
Mass per volume density.
Understanding the Pound per Pint (lb/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per pint are in 1 grain per cubic inch?
1 grain per cubic inch equals 0.004125 pounds per pint, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic inch to pound per pint?
Multiply the grain per cubic inch value by 0.004125. The converter above does this instantly to whatever precision you set.
How do I convert pound per pint back to grain per cubic inch?
Use the reverse factor: 1 pound per pint equals 242.4242424 grain per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic inch?
Grain per Cubic inch (gr/in3) is a unit of density.
What is a pound per pint?
Pound per Pint (lb/pt) is a unit of density.
Is the grain per cubic inch to pound per pint conversion exact?
Yes. Both grain per cubic inch and pound per pint are defined by fixed standards rather than physical artifacts, so the factor of 0.004125 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.