Mass per volume density.
Stones per Cubic Millimeter to Megagrams per Teaspoon Converter — st/mm3 to Mg/tsp
Convert Stone per Cubic Millimeter (st/mm3) to Megagram per Teaspoon (Mg/tsp) using the exact conversion factor (1 stone per cubic millimeter = 31.30009718 megagram per teaspoon). See the formula, worked examples, and conversion table.
Stones per Cubic Millimeter to Megagrams 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 6.35029318e+9 / 2.02884136e+8.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic Millimeter to Megagrams per Teaspoon
Stone per Cubic Millimeter and Megagram 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
megagrams per teaspoon = stones per cubic millimeter × 31.3000971815
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic millimeter equals 6350293180 base units, and 1 megagram per teaspoon equals 202884136.211 base units, so dividing one by the other gives the direct stone per cubic millimeter-to-megagram per teaspoon factor of 31.3000971815.
Simple example
1 st/mm3 × 31.30009718 = 31.30009718 Mg/tsp
1 stone per cubic millimeter = 31.30009718 megagrams per teaspoon.
Real-world example
1,000 st/mm3 × 31.30009718 = 31,300.09718 Mg/tsp
1,000 stones per cubic millimeter = 31,300.09718 megagrams per teaspoon.
Conversion table
| Stone per Cubic Millimeter (st/mm3) | Megagram per Teaspoon (Mg/tsp) |
|---|---|
| 0.1 st/mm3 | 3.130009718 Mg/tsp |
| 1 st/mm3 | 31.30009718 Mg/tsp |
| 10 st/mm3 | 313.0009718 Mg/tsp |
| 100 st/mm3 | 3,130.009718 Mg/tsp |
| 1,000 st/mm3 | 31,300.09718 Mg/tsp |
| 10,000 st/mm3 | 313,000.9718 Mg/tsp |
Reverse conversion: Megagram per Teaspoon to Stone per Cubic Millimeter
31.30009718 Mg/tsp × 0.03194878259 = 1 st/mm3
31.30009718 megagrams per teaspoon = 1 stones per cubic millimeter.
stones per cubic millimeter = megagrams per teaspoon × 0.0319487825932
For a page dedicated to this direction, see Megagram per Teaspoon to Stone per Cubic Millimeter.
Understanding the Stone per Cubic Millimeter (st/mm3)
Mass per volume density.
Understanding the Megagram 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 megagrams per teaspoon are in 1 stone per cubic millimeter?
1 stone per cubic millimeter equals 31.30009718 megagrams per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic millimeter to megagram per teaspoon?
Multiply the stone per cubic millimeter value by 31.30009718. The converter above does this instantly to whatever precision you set.
How do I convert megagram per teaspoon back to stone per cubic millimeter?
Use the reverse factor: 1 megagram per teaspoon equals 0.0319487826 stones per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic millimeter?
Stone per Cubic Millimeter (st/mm3) is a unit of density.
What is a megagram per teaspoon?
Megagram per Teaspoon (Mg/tsp) is a unit of density.
Is the stone per cubic millimeter to megagram per teaspoon conversion exact?
Yes. Both stone per cubic millimeter and megagram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 31.30009718 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.