Mass per volume density.
Stones per Cubic foot to Carat per Cubic inches Converter — st/ft3 to ct/in3
Convert Stone per Cubic foot (st/ft3) to Carat per Cubic inch (ct/in3) using the exact conversion factor (1 stone per cubic foot = 18.37469091 carat per cubic inch). See the formula, worked examples, and conversion table.
Stones per Cubic foot to Carat per Cubic inches 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 224.2584872 / 12.20474882.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic foot to Carat per Cubic inches
Stone per Cubic foot and Carat per Cubic inch 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
carat per cubic inches = stones per cubic foot × 18.3746909144
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic foot equals 224.258487235 base units, and 1 carat per cubic inch equals 12.2047488189 base units, so dividing one by the other gives the direct stone per cubic foot-to-carat per cubic inch factor of 18.3746909144.
Simple example
1 st/ft3 × 18.37469091 = 18.37469091 ct/in3
1 stone per cubic foot = 18.37469091 carat per cubic inches.
Real-world example
1,000 st/ft3 × 18.37469091 = 18,374.69091 ct/in3
1,000 stones per cubic foot = 18,374.69091 carat per cubic inches.
Conversion table
| Stone per Cubic foot (st/ft3) | Carat per Cubic inch (ct/in3) |
|---|---|
| 0.1 st/ft3 | 1.837469091 ct/in3 |
| 1 st/ft3 | 18.37469091 ct/in3 |
| 10 st/ft3 | 183.7469091 ct/in3 |
| 100 st/ft3 | 1,837.469091 ct/in3 |
| 1,000 st/ft3 | 18,374.69091 ct/in3 |
| 10,000 st/ft3 | 183,746.9091 ct/in3 |
Reverse conversion: Carat per Cubic inch to Stone per Cubic foot
18.37469091 ct/in3 × 0.05442268415 = 0.9999999998 st/ft3
18.37469091 carat per cubic inches = 0.9999999998 stones per cubic foot.
stones per cubic foot = carat per cubic inches × 0.0544226841508
For a page dedicated to this direction, see Carat per Cubic inch to Stone per Cubic foot.
Understanding the Stone per Cubic foot (st/ft3)
Mass per volume density.
Understanding the Carat per Cubic inch (ct/in3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carat per cubic inches are in 1 stone per cubic foot?
1 stone per cubic foot equals 18.37469091 carat per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic foot to carat per cubic inch?
Multiply the stone per cubic foot value by 18.37469091. The converter above does this instantly to whatever precision you set.
How do I convert carat per cubic inch back to stone per cubic foot?
Use the reverse factor: 1 carat per cubic inch equals 0.0544226842 stones per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic foot?
Stone per Cubic foot (st/ft3) is a unit of density.
What is a carat per cubic inch?
Carat per Cubic inch (ct/in3) is a unit of density.
Is the stone per cubic foot to carat per cubic inch conversion exact?
Yes. Both stone per cubic foot and carat per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 18.37469091 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.