Mass per volume density.
Grains per Teaspoon to Pounds per Imperial gallon Converter — gr/tsp to lb/imp gal
Convert Grain per Teaspoon (gr/tsp) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 grain per teaspoon = 0.1317613633 pound per imperial gallon). See the formula, worked examples, and conversion table.
Grains per Teaspoon to Pounds per Imperial 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 13.14667088 / 99.77637266.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Teaspoon to Pounds per Imperial gallon
Grain per Teaspoon and Pound per Imperial 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
pounds per imperial gallon = grains per teaspoon × 0.131761363255
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per teaspoon equals 13.1466708828 base units, and 1 pound per imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct grain per teaspoon-to-pound per imperial gallon factor of 0.131761363255.
Simple example
1 gr/tsp × 0.1317613633 = 0.1317613633 lb/imp gal
1 grain per teaspoon = 0.1317613633 pounds per imperial gallon.
Real-world example
1,000 gr/tsp × 0.1317613633 = 131.7613633 lb/imp gal
1,000 grains per teaspoon = 131.7613633 pounds per imperial gallon.
Conversion table
| Grain per Teaspoon (gr/tsp) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 gr/tsp | 0.0131761363 lb/imp gal |
| 1 gr/tsp | 0.1317613633 lb/imp gal |
| 10 gr/tsp | 1.317613633 lb/imp gal |
| 100 gr/tsp | 13.17613633 lb/imp gal |
| 1,000 gr/tsp | 131.7613633 lb/imp gal |
| 10,000 gr/tsp | 1,317.613633 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Grain per Teaspoon
0.1317613633 lb/imp gal × 7.589478245 = 1 gr/tsp
0.1317613633 pounds per imperial gallon = 1 grains per teaspoon.
grains per teaspoon = pounds per imperial gallon × 7.58947824532
For a page dedicated to this direction, see Pound per Imperial gallon to Grain per Teaspoon.
Understanding the Grain per Teaspoon (gr/tsp)
Mass per volume density.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per imperial gallon are in 1 grain per teaspoon?
1 grain per teaspoon equals 0.1317613633 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per teaspoon to pound per imperial gallon?
Multiply the grain per teaspoon value by 0.1317613633. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to grain per teaspoon?
Use the reverse factor: 1 pound per imperial gallon equals 7.589478245 grains per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per teaspoon?
Grain per Teaspoon (gr/tsp) is a unit of density.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
Is the grain per teaspoon to pound per imperial gallon conversion exact?
Yes. Both grain per teaspoon and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.1317613633 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.