Mass per volume density.
Stones per Teaspoon to Grains per Teaspoon Converter — st/tsp to gr/tsp
Convert Stone per Teaspoon (st/tsp) to Grain per Teaspoon (gr/tsp) using the exact conversion factor (1 stone per teaspoon = 98,000 grain per teaspoon). See the formula, worked examples, and conversion table.
Stones per Teaspoon 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 1.28837375e+6 / 13.14667088.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Teaspoon to Grains per Teaspoon
Stone per Teaspoon 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 = stones per teaspoon × 98000
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per teaspoon equals 1288373.74651 base units, and 1 grain per teaspoon equals 13.1466708828 base units, so dividing one by the other gives the direct stone per teaspoon-to-grain per teaspoon factor of 98000.
Simple example
1 st/tsp × 98000 = 98,000 gr/tsp
1 stone per teaspoon = 98,000 grains per teaspoon.
Real-world example
1,000 st/tsp × 98000 = 98,000,000 gr/tsp
1,000 stones per teaspoon = 98,000,000 grains per teaspoon.
Conversion table
| Stone per Teaspoon (st/tsp) | Grain per Teaspoon (gr/tsp) |
|---|---|
| 0.1 st/tsp | 9,800 gr/tsp |
| 1 st/tsp | 98,000 gr/tsp |
| 10 st/tsp | 980,000 gr/tsp |
| 100 st/tsp | 9,800,000 gr/tsp |
| 1,000 st/tsp | 98,000,000 gr/tsp |
| 10,000 st/tsp | 980,000,000 gr/tsp |
Reverse conversion: Grain per Teaspoon to Stone per Teaspoon
1 gr/tsp × 0.00001020408163 = 0.0000102041 st/tsp
1 grain per teaspoon = 0.0000102041 stones per teaspoon.
stones per teaspoon = grains per teaspoon × 0.0000102040816327
For a page dedicated to this direction, see Grain per Teaspoon to Stone per Teaspoon.
Understanding the Stone per Teaspoon (st/tsp)
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 stone per teaspoon?
1 stone per teaspoon equals 98,000 grains per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per teaspoon to grain per teaspoon?
Multiply the stone per teaspoon value by 98000. The converter above does this instantly to whatever precision you set.
How do I convert grain per teaspoon back to stone per teaspoon?
Use the reverse factor: 1 grain per teaspoon equals 0.0000102041 stones per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) is a unit of density.
What is a grain per teaspoon?
Grain per Teaspoon (gr/tsp) is a unit of density.
Is the stone per teaspoon to grain per teaspoon conversion exact?
Yes. Both stone per teaspoon and grain per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 98000 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.