Mass per volume density.
Grains per Quart to Milligrams per Teaspoon Converter — gr/qt to mg/tsp
Convert Grain per Quart (gr/qt) to Milligram per Teaspoon (mg/tsp) using the exact conversion factor (1 grain per quart = 0.3374943229 milligram per teaspoon). See the formula, worked examples, and conversion table.
Grains per Quart 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 0.06847224418 / 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 Quart to Milligrams per Teaspoon
Grain per Quart 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 quart × 0.337494322917
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per quart equals 0.0684722441811 base units, and 1 milligram per teaspoon equals 0.202884136211 base units, so dividing one by the other gives the direct grain per quart-to-milligram per teaspoon factor of 0.337494322917.
Simple example
1 gr/qt × 0.3374943229 = 0.3374943229 mg/tsp
1 grain per quart = 0.3374943229 milligrams per teaspoon.
Real-world example
1,000 gr/qt × 0.3374943229 = 337.4943229 mg/tsp
1,000 grains per quart = 337.4943229 milligrams per teaspoon.
Conversion table
| Grain per Quart (gr/qt) | Milligram per Teaspoon (mg/tsp) |
|---|---|
| 0.1 gr/qt | 0.0337494323 mg/tsp |
| 1 gr/qt | 0.3374943229 mg/tsp |
| 10 gr/qt | 3.374943229 mg/tsp |
| 100 gr/qt | 33.74943229 mg/tsp |
| 1,000 gr/qt | 337.4943229 mg/tsp |
| 10,000 gr/qt | 3,374.943229 mg/tsp |
Reverse conversion: Milligram per Teaspoon to Grain per Quart
0.3374943229 mg/tsp × 2.963012804 = 1 gr/qt
0.3374943229 milligrams per teaspoon = 1 grains per quart.
grains per quart = milligrams per teaspoon × 2.96301280376
For a page dedicated to this direction, see Milligram per Teaspoon to Grain per Quart.
Understanding the Grain per Quart (gr/qt)
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 quart?
1 grain per quart equals 0.3374943229 milligrams per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per quart to milligram per teaspoon?
Multiply the grain per quart value by 0.3374943229. The converter above does this instantly to whatever precision you set.
How do I convert milligram per teaspoon back to grain per quart?
Use the reverse factor: 1 milligram per teaspoon equals 2.963012804 grains per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per quart?
Grain per Quart (gr/qt) 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 quart to milligram per teaspoon conversion exact?
Yes. Both grain per quart and milligram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.3374943229 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.