Mass per volume density.
Stones per Cubic foot to Kilograms per Cup Converter — st/ft3 to kg/cup
Convert Stone per Cubic foot (st/ft3) to Kilogram per Cup (kg/cup) using the exact conversion factor (1 stone per cubic foot = 0.05305692 kilogram per cup). See the formula, worked examples, and conversion table.
Stones per Cubic foot to Kilograms per Cup 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 / 4226.752838.
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 Kilograms per Cup
Stone per Cubic foot and Kilogram per Cup 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
kilograms per cup = stones per cubic foot × 0.0530569200152
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 kilogram per cup equals 4226.75283773 base units, so dividing one by the other gives the direct stone per cubic foot-to-kilogram per cup factor of 0.0530569200152.
Simple example
1 st/ft3 × 0.05305692002 = 0.05305692 kg/cup
1 stone per cubic foot = 0.05305692 kilograms per cup.
Real-world example
1,000 st/ft3 × 0.05305692002 = 53.05692002 kg/cup
1,000 stones per cubic foot = 53.05692002 kilograms per cup.
Conversion table
| Stone per Cubic foot (st/ft3) | Kilogram per Cup (kg/cup) |
|---|---|
| 0.1 st/ft3 | 0.005305692 kg/cup |
| 1 st/ft3 | 0.05305692 kg/cup |
| 10 st/ft3 | 0.5305692002 kg/cup |
| 100 st/ft3 | 5.305692002 kg/cup |
| 1,000 st/ft3 | 53.05692002 kg/cup |
| 10,000 st/ft3 | 530.5692002 kg/cup |
Reverse conversion: Kilogram per Cup to Stone per Cubic foot
0.05305692 kg/cup × 18.84768282 = 0.9999999997 st/ft3
0.05305692 kilograms per cup = 0.9999999997 stones per cubic foot.
stones per cubic foot = kilograms per cup × 18.8476828228
For a page dedicated to this direction, see Kilogram per Cup to Stone per Cubic foot.
Understanding the Stone per Cubic foot (st/ft3)
Mass per volume density.
Understanding the Kilogram per Cup (kg/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cup are in 1 stone per cubic foot?
1 stone per cubic foot equals 0.05305692 kilograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic foot to kilogram per cup?
Multiply the stone per cubic foot value by 0.05305692002. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cup back to stone per cubic foot?
Use the reverse factor: 1 kilogram per cup equals 18.84768282 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 kilogram per cup?
Kilogram per Cup (kg/cup) is a unit of density.
Is the stone per cubic foot to kilogram per cup conversion exact?
Yes. Both stone per cubic foot and kilogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.05305692002 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.