Mass per volume density.
Grains per Gallon to Milligrams per Teaspoon Converter — gr/gal to mg/tsp
Convert Grain per Gallon (gr/gal) to Milligram per Teaspoon (mg/tsp) using the exact conversion factor (1 grain per gallon = 0.0843735807 milligram per teaspoon). See the formula, worked examples, and conversion table.
Grains per Gallon to Milligrams 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 / 0.2028841362.
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 Milligrams per Teaspoon
Grain per Gallon and Milligram 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
milligrams per teaspoon = grains per gallon × 0.0843735807292
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 milligram per teaspoon equals 0.202884136211 base units, so dividing one by the other gives the direct grain per gallon-to-milligram per teaspoon factor of 0.0843735807292.
Simple example
1 gr/gal × 0.08437358073 = 0.0843735807 mg/tsp
1 grain per gallon = 0.0843735807 milligrams per teaspoon.
Real-world example
1,000 gr/gal × 0.08437358073 = 84.37358073 mg/tsp
1,000 grains per gallon = 84.37358073 milligrams per teaspoon.
Conversion table
| Grain per Gallon (gr/gal) | Milligram per Teaspoon (mg/tsp) |
|---|---|
| 0.1 gr/gal | 0.0084373581 mg/tsp |
| 1 gr/gal | 0.0843735807 mg/tsp |
| 10 gr/gal | 0.8437358073 mg/tsp |
| 100 gr/gal | 8.437358073 mg/tsp |
| 1,000 gr/gal | 84.37358073 mg/tsp |
| 10,000 gr/gal | 843.7358073 mg/tsp |
Reverse conversion: Milligram per Teaspoon to Grain per Gallon
0.0843735807 mg/tsp × 11.85205122 = 0.9999999997 gr/gal
0.0843735807 milligrams per teaspoon = 0.9999999997 grains per gallon.
grains per gallon = milligrams per teaspoon × 11.8520512151
For a page dedicated to this direction, see Milligram per Teaspoon to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Understanding the Milligram per Teaspoon (mg/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per teaspoon are in 1 grain per gallon?
1 grain per gallon equals 0.0843735807 milligrams per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to milligram per teaspoon?
Multiply the grain per gallon value by 0.08437358073. The converter above does this instantly to whatever precision you set.
How do I convert milligram per teaspoon back to grain per gallon?
Use the reverse factor: 1 milligram per teaspoon equals 11.85205122 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 milligram per teaspoon?
Milligram per Teaspoon (mg/tsp) is a unit of density.
Is the grain per gallon to milligram per teaspoon conversion exact?
Yes. Both grain per gallon and milligram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.08437358073 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.