Mass per volume density.
Slugs per Teaspoon to Grains per Gallon Converter — slug/tsp to gr/gal
Convert Slug per Teaspoon (slug/tsp) to Grain per Gallon (gr/gal) using the exact conversion factor (1 slug per teaspoon = 172,967,685 grain per gallon). See the formula, worked examples, and conversion table.
Slugs per Teaspoon to Grains 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 2.96087139e+6 / 0.01711806105.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Slugs per Teaspoon to Grains per Gallon
Slug per Teaspoon and Grain 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
grains per gallon = slugs per teaspoon × 172967685.039
This factor comes from each unit's defined relationship to the category's base unit: 1 slug per teaspoon equals 2960871.39136 base units, and 1 grain per gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct slug per teaspoon-to-grain per gallon factor of 172967685.039.
Simple example
1 slug/tsp × 172967685 = 172,967,685 gr/gal
1 slug per teaspoon = 172,967,685 grains per gallon.
Real-world example
1,000 slug/tsp × 172967685 = 172,967,685,000 gr/gal
1,000 slugs per teaspoon = 172,967,685,000 grains per gallon.
Conversion table
| Slug per Teaspoon (slug/tsp) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 slug/tsp | 17,296,768.5 gr/gal |
| 1 slug/tsp | 172,967,685 gr/gal |
| 10 slug/tsp | 1,729,676,850 gr/gal |
| 100 slug/tsp | 17,296,768,500 gr/gal |
| 1,000 slug/tsp | 172,967,685,000 gr/gal |
| 10,000 slug/tsp | 1.729677e+12 gr/gal |
Reverse conversion: Grain per Gallon to Slug per Teaspoon
1 gr/gal × 5.781427e-9 = 5.781427e-9 slug/tsp
1 grain per gallon = 5.781427e-9 slugs per teaspoon.
slugs per teaspoon = grains per gallon × 5.781427e-9
For a page dedicated to this direction, see Grain per Gallon to Slug per Teaspoon.
Understanding the Slug per Teaspoon (slug/tsp)
Mass per volume density.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per gallon are in 1 slug per teaspoon?
1 slug per teaspoon equals 172,967,685 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert slug per teaspoon to grain per gallon?
Multiply the slug per teaspoon value by 172967685. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to slug per teaspoon?
Use the reverse factor: 1 grain per gallon equals 5.781427e-9 slugs per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug per teaspoon?
Slug per Teaspoon (slug/tsp) is a unit of density.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
Is the slug per teaspoon to grain per gallon conversion exact?
Yes. Both slug per teaspoon and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 172967685 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.