Mass per volume density.
Milligrams per Gallon to Grains per Teaspoon Converter — mg/gal to gr/tsp
Convert Milligram per Gallon (mg/gal) to Grain per Teaspoon (gr/tsp) using the exact conversion factor (1 milligram per gallon = 0.0000200942 grain per teaspoon). See the formula, worked examples, and conversion table.
Milligrams per Gallon to Grains 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 0.0002641720524 / 13.14667088.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Gallon to Grains per Teaspoon
Milligram per Gallon and Grain 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
grains per teaspoon = milligrams per gallon × 0.0000200942166054
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per gallon equals 0.000264172052358 base units, and 1 grain per teaspoon equals 13.1466708828 base units, so dividing one by the other gives the direct milligram per gallon-to-grain per teaspoon factor of 0.0000200942166054.
Simple example
1 mg/gal × 0.00002009421661 = 0.0000200942 gr/tsp
1 milligram per gallon = 0.0000200942 grains per teaspoon.
Real-world example
1,000 mg/gal × 0.00002009421661 = 0.0200942166 gr/tsp
1,000 milligrams per gallon = 0.0200942166 grains per teaspoon.
Conversion table
| Milligram per Gallon (mg/gal) | Grain per Teaspoon (gr/tsp) |
|---|---|
| 0.1 mg/gal | 0.0000020094 gr/tsp |
| 1 mg/gal | 0.0000200942 gr/tsp |
| 10 mg/gal | 0.0002009422 gr/tsp |
| 100 mg/gal | 0.0020094217 gr/tsp |
| 1,000 mg/gal | 0.0200942166 gr/tsp |
| 10,000 mg/gal | 0.2009421661 gr/tsp |
Reverse conversion: Grain per Teaspoon to Milligram per Gallon
0.0000200942 gr/tsp × 49765.56288 = 0.9999991736 mg/gal
0.0000200942 grains per teaspoon = 0.9999991736 milligrams per gallon.
milligrams per gallon = grains per teaspoon × 49765.56288
For a page dedicated to this direction, see Grain per Teaspoon to Milligram per Gallon.
Understanding the Milligram per Gallon (mg/gal)
Mass per volume density.
Understanding the Grain per Teaspoon (gr/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per teaspoon are in 1 milligram per gallon?
1 milligram per gallon equals 0.0000200942 grains per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per gallon to grain per teaspoon?
Multiply the milligram per gallon value by 0.00002009421661. The converter above does this instantly to whatever precision you set.
How do I convert grain per teaspoon back to milligram per gallon?
Use the reverse factor: 1 grain per teaspoon equals 49,765.56288 milligrams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of density.
What is a grain per teaspoon?
Grain per Teaspoon (gr/tsp) is a unit of density.
Is the milligram per gallon to grain per teaspoon conversion exact?
Yes. Both milligram per gallon and grain per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.00002009421661 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.