Mass per volume density.
Stone per Cubic inches to Carats per Teaspoon Converter — st/in3 to ct/tsp
Convert Stone per Cubic inch (st/in3) to Carat per Teaspoon (ct/tsp) using the exact conversion factor (1 stone per cubic inch = 9,550.245603 carat per teaspoon). See the formula, worked examples, and conversion table.
Stone per Cubic inches to Carats 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 387518.6659 / 40.57682724.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stone per Cubic inches to Carats per Teaspoon
Stone per Cubic inch and Carat 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
carats per teaspoon = stone per cubic inches × 9550.24560273
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic inch equals 387518.665943 base units, and 1 carat per teaspoon equals 40.5768272422 base units, so dividing one by the other gives the direct stone per cubic inch-to-carat per teaspoon factor of 9550.24560273.
Simple example
1 st/in3 × 9550.245603 = 9,550.245603 ct/tsp
1 stone per cubic inch = 9,550.245603 carats per teaspoon.
Real-world example
1,000 st/in3 × 9550.245603 = 9,550,245.603 ct/tsp
1,000 stone per cubic inches = 9,550,245.603 carats per teaspoon.
Conversion table
| Stone per Cubic inch (st/in3) | Carat per Teaspoon (ct/tsp) |
|---|---|
| 0.1 st/in3 | 955.0245603 ct/tsp |
| 1 st/in3 | 9,550.245603 ct/tsp |
| 10 st/in3 | 95,502.45603 ct/tsp |
| 100 st/in3 | 955,024.5603 ct/tsp |
| 1,000 st/in3 | 9,550,245.603 ct/tsp |
| 10,000 st/in3 | 95,502,456.03 ct/tsp |
Reverse conversion: Carat per Teaspoon to Stone per Cubic inch
1 ct/tsp × 0.000104709349 = 0.0001047093 st/in3
1 carat per teaspoon = 0.0001047093 stone per cubic inches.
stone per cubic inches = carats per teaspoon × 0.000104709349015
For a page dedicated to this direction, see Carat per Teaspoon to Stone per Cubic inch.
Understanding the Stone per Cubic inch (st/in3)
Mass per volume density.
Understanding the Carat per Teaspoon (ct/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per teaspoon are in 1 stone per cubic inch?
1 stone per cubic inch equals 9,550.245603 carats per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic inch to carat per teaspoon?
Multiply the stone per cubic inch value by 9550.245603. The converter above does this instantly to whatever precision you set.
How do I convert carat per teaspoon back to stone per cubic inch?
Use the reverse factor: 1 carat per teaspoon equals 0.0001047093 stone per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic inch?
Stone per Cubic inch (st/in3) is a unit of density.
What is a carat per teaspoon?
Carat per Teaspoon (ct/tsp) is a unit of density.
Is the stone per cubic inch to carat per teaspoon conversion exact?
Yes. Both stone per cubic inch and carat per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 9550.245603 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.