Mass per volume density.
Carats per Tablespoon to Stones per Teaspoon Converter — ct/tbsp to st/tsp
Convert Carat per Tablespoon (ct/tbsp) to Stone per Teaspoon (st/tsp) using the exact conversion factor (1 carat per tablespoon = 0.0000104982 stone per teaspoon). See the formula, worked examples, and conversion table.
Carats per Tablespoon to Stones 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 13.52560908 / 1.28837375e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Tablespoon to Stones per Teaspoon
Carat per Tablespoon and Stone 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
stones per teaspoon = carats per tablespoon × 0.0000104982029612
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per tablespoon equals 13.5256090807 base units, and 1 stone per teaspoon equals 1288373.74651 base units, so dividing one by the other gives the direct carat per tablespoon-to-stone per teaspoon factor of 0.0000104982029612.
Simple example
1 ct/tbsp × 0.00001049820296 = 0.0000104982 st/tsp
1 carat per tablespoon = 0.0000104982 stones per teaspoon.
Real-world example
1,000 ct/tbsp × 0.00001049820296 = 0.010498203 st/tsp
1,000 carats per tablespoon = 0.010498203 stones per teaspoon.
Conversion table
| Carat per Tablespoon (ct/tbsp) | Stone per Teaspoon (st/tsp) |
|---|---|
| 0.1 ct/tbsp | 0.0000010498 st/tsp |
| 1 ct/tbsp | 0.0000104982 st/tsp |
| 10 ct/tbsp | 0.000104982 st/tsp |
| 100 ct/tbsp | 0.0010498203 st/tsp |
| 1,000 ct/tbsp | 0.010498203 st/tsp |
| 10,000 ct/tbsp | 0.1049820296 st/tsp |
Reverse conversion: Stone per Teaspoon to Carat per Tablespoon
0.0000104982 st/tsp × 95254.3977 = 0.9999997179 ct/tbsp
0.0000104982 stones per teaspoon = 0.9999997179 carats per tablespoon.
carats per tablespoon = stones per teaspoon × 95254.3977
For a page dedicated to this direction, see Stone per Teaspoon to Carat per Tablespoon.
Understanding the Carat per Tablespoon (ct/tbsp)
Mass per volume density.
Understanding the Stone per Teaspoon (st/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per teaspoon are in 1 carat per tablespoon?
1 carat per tablespoon equals 0.0000104982 stones per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert carat per tablespoon to stone per teaspoon?
Multiply the carat per tablespoon value by 0.00001049820296. The converter above does this instantly to whatever precision you set.
How do I convert stone per teaspoon back to carat per tablespoon?
Use the reverse factor: 1 stone per teaspoon equals 95,254.3977 carats per tablespoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per tablespoon?
Carat per Tablespoon (ct/tbsp) is a unit of density.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) is a unit of density.
Is the carat per tablespoon to stone per teaspoon conversion exact?
Yes. Both carat per tablespoon and stone per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.00001049820296 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.