Mass per volume density.
Stones per Cup to Grains per Teaspoon Converter — st/cup to gr/tsp
Convert Stone per Cup (st/cup) to Grain per Teaspoon (gr/tsp) using the exact conversion factor (1 stone per cup = 2,041.666667 grain per teaspoon). See the formula, worked examples, and conversion table.
Stones per Cup 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 26841.11972 / 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 Cup to Grains per Teaspoon
Stone per Cup 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 cup × 2041.66666667
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 grain per teaspoon equals 13.1466708828 base units, so dividing one by the other gives the direct stone per cup-to-grain per teaspoon factor of 2041.66666667.
Simple example
1 st/cup × 2041.666667 = 2,041.666667 gr/tsp
1 stone per cup = 2,041.666667 grains per teaspoon.
Real-world example
1,000 st/cup × 2041.666667 = 2,041,666.667 gr/tsp
1,000 stones per cup = 2,041,666.667 grains per teaspoon.
Conversion table
| Stone per Cup (st/cup) | Grain per Teaspoon (gr/tsp) |
|---|---|
| 0.1 st/cup | 204.1666667 gr/tsp |
| 1 st/cup | 2,041.666667 gr/tsp |
| 10 st/cup | 20,416.66667 gr/tsp |
| 100 st/cup | 204,166.6667 gr/tsp |
| 1,000 st/cup | 2,041,666.667 gr/tsp |
| 10,000 st/cup | 20,416,666.67 gr/tsp |
Reverse conversion: Grain per Teaspoon to Stone per Cup
1 gr/tsp × 0.0004897959184 = 0.0004897959 st/cup
1 grain per teaspoon = 0.0004897959 stones per cup.
stones per cup = grains per teaspoon × 0.000489795918367
For a page dedicated to this direction, see Grain per Teaspoon to Stone per Cup.
Understanding the Stone per Cup (st/cup)
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 cup?
1 stone per cup equals 2,041.666667 grains per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to grain per teaspoon?
Multiply the stone per cup value by 2041.666667. The converter above does this instantly to whatever precision you set.
How do I convert grain per teaspoon back to stone per cup?
Use the reverse factor: 1 grain per teaspoon equals 0.0004897959 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) 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 cup to grain per teaspoon conversion exact?
Yes. Both stone per cup and grain per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 2041.666667 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.