Mass per volume density.
Grains per Gallon to Slugs per Teaspoon Converter — gr/gal to slug/tsp
Convert Grain per Gallon (gr/gal) to Slug per Teaspoon (slug/tsp) using the exact conversion factor (1 grain per gallon = 5.781427e-9 slug per teaspoon). See the formula, worked examples, and conversion table.
Grains per Gallon to Slugs per Teaspoon 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 / 2.96087139e+6.
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 Slugs per Teaspoon
Grain per Gallon and Slug per Teaspoon 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 teaspoon = grains per gallon × 5.781427e-9
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 slug per teaspoon equals 2960871.39136 base units, so dividing one by the other gives the direct grain per gallon-to-slug per teaspoon factor of 5.781427e-9.
Simple example
1 gr/gal × 5.781427e-9 = 5.781427e-9 slug/tsp
1 grain per gallon = 5.781427e-9 slugs per teaspoon.
Real-world example
1,000 gr/gal × 5.781427e-9 = 0.0000057814 slug/tsp
1,000 grains per gallon = 0.0000057814 slugs per teaspoon.
Conversion table
| Grain per Gallon (gr/gal) | Slug per Teaspoon (slug/tsp) |
|---|---|
| 0.1 gr/gal | 5.781427e-10 slug/tsp |
| 1 gr/gal | 5.781427e-9 slug/tsp |
| 10 gr/gal | 5.781427e-8 slug/tsp |
| 100 gr/gal | 5.781427e-7 slug/tsp |
| 1,000 gr/gal | 0.0000057814 slug/tsp |
| 10,000 gr/gal | 0.0000578143 slug/tsp |
Reverse conversion: Slug per Teaspoon to Grain per Gallon
5.781427e-9 slug/tsp × 172967685 = 1.000000044 gr/gal
5.781427e-9 slugs per teaspoon = 1.000000044 grains per gallon.
grains per gallon = slugs per teaspoon × 172967685.039
For a page dedicated to this direction, see Slug per Teaspoon to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Understanding the Slug per Teaspoon (slug/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per teaspoon are in 1 grain per gallon?
1 grain per gallon equals 5.781427e-9 slugs per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to slug per teaspoon?
Multiply the grain per gallon value by 5.781427e-9. The converter above does this instantly to whatever precision you set.
How do I convert slug per teaspoon back to grain per gallon?
Use the reverse factor: 1 slug per teaspoon equals 172,967,685 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 slug per teaspoon?
Slug per Teaspoon (slug/tsp) is a unit of density.
Is the grain per gallon to slug per teaspoon conversion exact?
Yes. Both grain per gallon and slug per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 5.781427e-9 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.