Mass per volume density.
Grains per Pint to Slugs per Gallon Converter — gr/pt to slug/gal
Convert Grain per Pint (gr/pt) to Slug per Gallon (slug/gal) using the exact conversion factor (1 grain per pint = 0.0000355211 slug per gallon). See the formula, worked examples, and conversion table.
Grains per Pint to Slugs per Gallon 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 / 3855.301291.
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 Slugs per Gallon
Grain per Pint and Slug per Gallon 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
slugs per gallon = grains per pint × 0.0000355210859104
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 slug per gallon equals 3855.30129084 base units, so dividing one by the other gives the direct grain per pint-to-slug per gallon factor of 0.0000355210859104.
Simple example
1 gr/pt × 0.00003552108591 = 0.0000355211 slug/gal
1 grain per pint = 0.0000355211 slugs per gallon.
Real-world example
1,000 gr/pt × 0.00003552108591 = 0.0355210859 slug/gal
1,000 grains per pint = 0.0355210859 slugs per gallon.
Conversion table
| Grain per Pint (gr/pt) | Slug per Gallon (slug/gal) |
|---|---|
| 0.1 gr/pt | 0.0000035521 slug/gal |
| 1 gr/pt | 0.0000355211 slug/gal |
| 10 gr/pt | 0.0003552109 slug/gal |
| 100 gr/pt | 0.0035521086 slug/gal |
| 1,000 gr/pt | 0.0355210859 slug/gal |
| 10,000 gr/pt | 0.3552108591 slug/gal |
Reverse conversion: Slug per Gallon to Grain per Pint
0.0000355211 slug/gal × 28152.29249 = 1.000000397 gr/pt
0.0000355211 slugs per gallon = 1.000000397 grains per pint.
grains per pint = slugs per gallon × 28152.2924869
For a page dedicated to this direction, see Slug per Gallon to Grain per Pint.
Understanding the Grain per Pint (gr/pt)
Mass per volume density.
Understanding the Slug per Gallon (slug/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per gallon are in 1 grain per pint?
1 grain per pint equals 0.0000355211 slugs per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per pint to slug per gallon?
Multiply the grain per pint value by 0.00003552108591. The converter above does this instantly to whatever precision you set.
How do I convert slug per gallon back to grain per pint?
Use the reverse factor: 1 slug per gallon equals 28,152.29249 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 slug per gallon?
Slug per Gallon (slug/gal) is a unit of density.
Is the grain per pint to slug per gallon conversion exact?
Yes. Both grain per pint and slug per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00003552108591 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.