Mass per volume density.
Grains per Teaspoon to Stones per Tablespoon Converter — gr/tsp to st/tbsp
Convert Grain per Teaspoon (gr/tsp) to Stone per Tablespoon (st/tbsp) using the exact conversion factor (1 grain per teaspoon = 0.0000306122 stone per tablespoon). See the formula, worked examples, and conversion table.
Grains per Teaspoon to Stones per Tablespoon 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 / 429457.9155.
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 Stones per Tablespoon
Grain per Teaspoon and Stone per Tablespoon 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
stones per tablespoon = grains per teaspoon × 0.000030612244898
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 stone per tablespoon equals 429457.915504 base units, so dividing one by the other gives the direct grain per teaspoon-to-stone per tablespoon factor of 0.000030612244898.
Simple example
1 gr/tsp × 0.0000306122449 = 0.0000306122 st/tbsp
1 grain per teaspoon = 0.0000306122 stones per tablespoon.
Real-world example
1,000 gr/tsp × 0.0000306122449 = 0.0306122449 st/tbsp
1,000 grains per teaspoon = 0.0306122449 stones per tablespoon.
Conversion table
| Grain per Teaspoon (gr/tsp) | Stone per Tablespoon (st/tbsp) |
|---|---|
| 0.1 gr/tsp | 0.0000030612 st/tbsp |
| 1 gr/tsp | 0.0000306122 st/tbsp |
| 10 gr/tsp | 0.0003061224 st/tbsp |
| 100 gr/tsp | 0.0030612245 st/tbsp |
| 1,000 gr/tsp | 0.0306122449 st/tbsp |
| 10,000 gr/tsp | 0.306122449 st/tbsp |
Reverse conversion: Stone per Tablespoon to Grain per Teaspoon
0.0000306122 st/tbsp × 32666.66667 = 0.9999985333 gr/tsp
0.0000306122 stones per tablespoon = 0.9999985333 grains per teaspoon.
grains per teaspoon = stones per tablespoon × 32666.6666667
For a page dedicated to this direction, see Stone per Tablespoon to Grain per Teaspoon.
Understanding the Grain per Teaspoon (gr/tsp)
Mass per volume density.
Understanding the Stone per Tablespoon (st/tbsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per tablespoon are in 1 grain per teaspoon?
1 grain per teaspoon equals 0.0000306122 stones per tablespoon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per teaspoon to stone per tablespoon?
Multiply the grain per teaspoon value by 0.0000306122449. The converter above does this instantly to whatever precision you set.
How do I convert stone per tablespoon back to grain per teaspoon?
Use the reverse factor: 1 stone per tablespoon equals 32,666.66667 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 stone per tablespoon?
Stone per Tablespoon (st/tbsp) is a unit of density.
Is the grain per teaspoon to stone per tablespoon conversion exact?
Yes. Both grain per teaspoon and stone per tablespoon are defined by fixed standards rather than physical artifacts, so the factor of 0.0000306122449 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.