Mass per volume density.
Grains per Teaspoon to Kilograms per Cubic Millimeter Converter — gr/tsp to kg/mm3
Convert Grain per Teaspoon (gr/tsp) to Kilogram per Cubic Millimeter (kg/mm3) using the exact conversion factor (1 grain per teaspoon = 1.314667e-8 kilogram per cubic millimeter). See the formula, worked examples, and conversion table.
Grains per Teaspoon to Kilograms per Cubic Millimeter 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 / 1e+9.
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 Kilograms per Cubic Millimeter
Grain per Teaspoon and Kilogram per Cubic Millimeter 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
kilograms per cubic millimeter = grains per teaspoon × 1.314667e-8
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 kilogram per cubic millimeter equals 1000000000 base units, so dividing one by the other gives the direct grain per teaspoon-to-kilogram per cubic millimeter factor of 1.314667e-8.
Simple example
1 gr/tsp × 1.314667e-8 = 1.314667e-8 kg/mm3
1 grain per teaspoon = 1.314667e-8 kilograms per cubic millimeter.
Real-world example
1,000 gr/tsp × 1.314667e-8 = 0.0000131467 kg/mm3
1,000 grains per teaspoon = 0.0000131467 kilograms per cubic millimeter.
Conversion table
| Grain per Teaspoon (gr/tsp) | Kilogram per Cubic Millimeter (kg/mm3) |
|---|---|
| 0.1 gr/tsp | 1.314667e-9 kg/mm3 |
| 1 gr/tsp | 1.314667e-8 kg/mm3 |
| 10 gr/tsp | 1.314667e-7 kg/mm3 |
| 100 gr/tsp | 0.0000013147 kg/mm3 |
| 1,000 gr/tsp | 0.0000131467 kg/mm3 |
| 10,000 gr/tsp | 0.0001314667 kg/mm3 |
Reverse conversion: Kilogram per Cubic Millimeter to Grain per Teaspoon
1.314667e-8 kg/mm3 × 76064884.33 = 0.9999999329 gr/tsp
1.314667e-8 kilograms per cubic millimeter = 0.9999999329 grains per teaspoon.
grains per teaspoon = kilograms per cubic millimeter × 76064884.3283
For a page dedicated to this direction, see Kilogram per Cubic Millimeter to Grain per Teaspoon.
Understanding the Grain per Teaspoon (gr/tsp)
Mass per volume density.
Understanding the Kilogram per Cubic Millimeter (kg/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic millimeter are in 1 grain per teaspoon?
1 grain per teaspoon equals 1.314667e-8 kilograms per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per teaspoon to kilogram per cubic millimeter?
Multiply the grain per teaspoon value by 1.314667e-8. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic millimeter back to grain per teaspoon?
Use the reverse factor: 1 kilogram per cubic millimeter equals 76,064,884.33 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 kilogram per cubic millimeter?
Kilogram per Cubic Millimeter (kg/mm3) is a unit of density.
Is the grain per teaspoon to kilogram per cubic millimeter conversion exact?
Yes. Both grain per teaspoon and kilogram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 1.314667e-8 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.