Mass per volume density.
Stone per Cubic inches to Kilogram per Cubic inches Converter — st/in3 to kg/in3
Convert Stone per Cubic inch (st/in3) to Kilogram per Cubic inch (kg/in3) using the exact conversion factor (1 stone per cubic inch = 6.35029318 kilogram per cubic inch). See the formula, worked examples, and conversion table.
Stone per Cubic inches to Kilogram 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 387518.6659 / 61023.74409.
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 Kilogram per Cubic inches
Stone per Cubic inch and Kilogram 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
kilogram per cubic inches = stone per cubic inches × 6.35029318
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 kilogram per cubic inch equals 61023.7440947 base units, so dividing one by the other gives the direct stone per cubic inch-to-kilogram per cubic inch factor of 6.35029318.
Simple example
1 st/in3 × 6.35029318 = 6.35029318 kg/in3
1 stone per cubic inch = 6.35029318 kilogram per cubic inches.
Real-world example
1,000 st/in3 × 6.35029318 = 6,350.29318 kg/in3
1,000 stone per cubic inches = 6,350.29318 kilogram per cubic inches.
Conversion table
| Stone per Cubic inch (st/in3) | Kilogram per Cubic inch (kg/in3) |
|---|---|
| 0.1 st/in3 | 0.635029318 kg/in3 |
| 1 st/in3 | 6.35029318 kg/in3 |
| 10 st/in3 | 63.5029318 kg/in3 |
| 100 st/in3 | 635.029318 kg/in3 |
| 1,000 st/in3 | 6,350.29318 kg/in3 |
| 10,000 st/in3 | 63,502.9318 kg/in3 |
Reverse conversion: Kilogram per Cubic inch to Stone per Cubic inch
6.35029318 kg/in3 × 0.1574730444 = 1 st/in3
6.35029318 kilogram per cubic inches = 1 stone per cubic inch.
stone per cubic inches = kilogram per cubic inches × 0.157473044418
For a page dedicated to this direction, see Kilogram per Cubic inch to Stone per Cubic inch.
Understanding the Stone per Cubic inch (st/in3)
Mass per volume density.
Understanding the Kilogram per Cubic inch (kg/in3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilogram per cubic inches are in 1 stone per cubic inch?
1 stone per cubic inch equals 6.35029318 kilogram per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic inch to kilogram per cubic inch?
Multiply the stone per cubic inch value by 6.35029318. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic inch back to stone per cubic inch?
Use the reverse factor: 1 kilogram per cubic inch equals 0.1574730444 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 kilogram per cubic inch?
Kilogram per Cubic inch (kg/in3) is a unit of density.
Is the stone per cubic inch to kilogram per cubic inch conversion exact?
Yes. Both stone per cubic inch and kilogram per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 6.35029318 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.