Mass per volume density.
Carats per Tablespoon to Stones per Tablespoon Converter — ct/tbsp to st/tbsp
Convert Carat per Tablespoon (ct/tbsp) to Stone per Tablespoon (st/tbsp) using the exact conversion factor (1 carat per tablespoon = 0.0000314946 stone per tablespoon). See the formula, worked examples, and conversion table.
Carats per Tablespoon 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 13.52560908 / 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 Tablespoon to Stones per Tablespoon
Carat per Tablespoon 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 tablespoon × 0.0000314946088836
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 tablespoon equals 429457.915504 base units, so dividing one by the other gives the direct carat per tablespoon-to-stone per tablespoon factor of 0.0000314946088836.
Simple example
1 ct/tbsp × 0.00003149460888 = 0.0000314946 st/tbsp
1 carat per tablespoon = 0.0000314946 stones per tablespoon.
Real-world example
1,000 ct/tbsp × 0.00003149460888 = 0.0314946089 st/tbsp
1,000 carats per tablespoon = 0.0314946089 stones per tablespoon.
Conversion table
| Carat per Tablespoon (ct/tbsp) | Stone per Tablespoon (st/tbsp) |
|---|---|
| 0.1 ct/tbsp | 0.0000031495 st/tbsp |
| 1 ct/tbsp | 0.0000314946 st/tbsp |
| 10 ct/tbsp | 0.0003149461 st/tbsp |
| 100 ct/tbsp | 0.0031494609 st/tbsp |
| 1,000 ct/tbsp | 0.0314946089 st/tbsp |
| 10,000 ct/tbsp | 0.3149460888 st/tbsp |
Reverse conversion: Stone per Tablespoon to Carat per Tablespoon
0.0000314946 st/tbsp × 31751.4659 = 0.9999997179 ct/tbsp
0.0000314946 stones per tablespoon = 0.9999997179 carats per tablespoon.
carats per tablespoon = stones per tablespoon × 31751.4659
For a page dedicated to this direction, see Stone per Tablespoon to Carat per Tablespoon.
Understanding the Carat per Tablespoon (ct/tbsp)
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 tablespoon?
1 carat per tablespoon equals 0.0000314946 stones per tablespoon, using the exact defined conversion factor rather than an estimate.
How do I convert carat per tablespoon to stone per tablespoon?
Multiply the carat per tablespoon value by 0.00003149460888. The converter above does this instantly to whatever precision you set.
How do I convert stone per tablespoon back to carat per tablespoon?
Use the reverse factor: 1 stone per tablespoon equals 31,751.4659 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 tablespoon?
Stone per Tablespoon (st/tbsp) is a unit of density.
Is the carat per tablespoon to stone per tablespoon conversion exact?
Yes. Both carat per tablespoon and stone per tablespoon are defined by fixed standards rather than physical artifacts, so the factor of 0.00003149460888 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.