Mass per volume density.
Milligrams per Teaspoon to Grains per Liter Converter — mg/tsp to gr/L
Convert Milligram per Teaspoon (mg/tsp) to Grain per Liter (gr/L) using the exact conversion factor (1 milligram per teaspoon = 3.130980694 grain per liter). See the formula, worked examples, and conversion table.
Milligrams per Teaspoon to Grains per Liter 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 0.2028841362 / 0.06479891.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Teaspoon to Grains per Liter
Milligram per Teaspoon and Grain per Liter 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 liter = milligrams per teaspoon × 3.13098069414
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per teaspoon equals 0.202884136211 base units, and 1 grain per liter equals 0.06479891 base units, so dividing one by the other gives the direct milligram per teaspoon-to-grain per liter factor of 3.13098069414.
Simple example
1 mg/tsp × 3.130980694 = 3.130980694 gr/L
1 milligram per teaspoon = 3.130980694 grains per liter.
Real-world example
1,000 mg/tsp × 3.130980694 = 3,130.980694 gr/L
1,000 milligrams per teaspoon = 3,130.980694 grains per liter.
Conversion table
| Milligram per Teaspoon (mg/tsp) | Grain per Liter (gr/L) |
|---|---|
| 0.1 mg/tsp | 0.3130980694 gr/L |
| 1 mg/tsp | 3.130980694 gr/L |
| 10 mg/tsp | 31.30980694 gr/L |
| 100 mg/tsp | 313.0980694 gr/L |
| 1,000 mg/tsp | 3,130.980694 gr/L |
| 10,000 mg/tsp | 31,309.80694 gr/L |
Reverse conversion: Grain per Liter to Milligram per Teaspoon
3.130980694 gr/L × 0.3193887468 = 1 mg/tsp
3.130980694 grains per liter = 1 milligrams per teaspoon.
milligrams per teaspoon = grains per liter × 0.31938874675
For a page dedicated to this direction, see Grain per Liter to Milligram per Teaspoon.
Understanding the Milligram per Teaspoon (mg/tsp)
Mass per volume density.
Understanding the Grain per Liter (gr/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per liter are in 1 milligram per teaspoon?
1 milligram per teaspoon equals 3.130980694 grains per liter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per teaspoon to grain per liter?
Multiply the milligram per teaspoon value by 3.130980694. The converter above does this instantly to whatever precision you set.
How do I convert grain per liter back to milligram per teaspoon?
Use the reverse factor: 1 grain per liter equals 0.3193887468 milligrams per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per teaspoon?
Milligram per Teaspoon (mg/tsp) is a unit of density.
What is a grain per liter?
Grain per Liter (gr/L) is a unit of density.
Is the milligram per teaspoon to grain per liter conversion exact?
Yes. Both milligram per teaspoon and grain per liter are defined by fixed standards rather than physical artifacts, so the factor of 3.130980694 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.