Mass per volume density.
Carats per Teaspoon to Stones per Tablespoon Converter — ct/tsp to st/tbsp
Convert Carat per Teaspoon (ct/tsp) to Stone per Tablespoon (st/tbsp) using the exact conversion factor (1 carat per teaspoon = 0.0000944838 stone per tablespoon). See the formula, worked examples, and conversion table.
Carats 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 40.57682724 / 429457.9155.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Teaspoon to Stones per Tablespoon
Carat 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 = carats per teaspoon × 0.0000944838266507
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per teaspoon equals 40.5768272422 base units, and 1 stone per tablespoon equals 429457.915504 base units, so dividing one by the other gives the direct carat per teaspoon-to-stone per tablespoon factor of 0.0000944838266507.
Simple example
1 ct/tsp × 0.00009448382665 = 0.0000944838 st/tbsp
1 carat per teaspoon = 0.0000944838 stones per tablespoon.
Real-world example
1,000 ct/tsp × 0.00009448382665 = 0.0944838267 st/tbsp
1,000 carats per teaspoon = 0.0944838267 stones per tablespoon.
Conversion table
| Carat per Teaspoon (ct/tsp) | Stone per Tablespoon (st/tbsp) |
|---|---|
| 0.1 ct/tsp | 0.0000094484 st/tbsp |
| 1 ct/tsp | 0.0000944838 st/tbsp |
| 10 ct/tsp | 0.0009448383 st/tbsp |
| 100 ct/tsp | 0.0094483827 st/tbsp |
| 1,000 ct/tsp | 0.0944838267 st/tbsp |
| 10,000 ct/tsp | 0.9448382665 st/tbsp |
Reverse conversion: Stone per Tablespoon to Carat per Teaspoon
0.0000944838 st/tbsp × 10583.82197 = 0.9999997179 ct/tsp
0.0000944838 stones per tablespoon = 0.9999997179 carats per teaspoon.
carats per teaspoon = stones per tablespoon × 10583.8219667
For a page dedicated to this direction, see Stone per Tablespoon to Carat per Teaspoon.
Understanding the Carat per Teaspoon (ct/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 carat per teaspoon?
1 carat per teaspoon equals 0.0000944838 stones per tablespoon, using the exact defined conversion factor rather than an estimate.
How do I convert carat per teaspoon to stone per tablespoon?
Multiply the carat per teaspoon value by 0.00009448382665. The converter above does this instantly to whatever precision you set.
How do I convert stone per tablespoon back to carat per teaspoon?
Use the reverse factor: 1 stone per tablespoon equals 10,583.82197 carats per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per teaspoon?
Carat per Teaspoon (ct/tsp) is a unit of density.
What is a stone per tablespoon?
Stone per Tablespoon (st/tbsp) is a unit of density.
Is the carat per teaspoon to stone per tablespoon conversion exact?
Yes. Both carat per teaspoon and stone per tablespoon are defined by fixed standards rather than physical artifacts, so the factor of 0.00009448382665 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.