Mass per volume density.
Stones per Cup to Kilograms per Cup Converter — st/cup to kg/cup
Convert Stone per Cup (st/cup) to Kilogram per Cup (kg/cup) using the exact conversion factor (1 stone per cup = 6.35029318 kilogram per cup). See the formula, worked examples, and conversion table.
Stones per Cup 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 26841.11972 / 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 Cup to Kilograms per Cup
Stone per Cup 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 cup × 6.35029318
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 kilogram per cup equals 4226.75283773 base units, so dividing one by the other gives the direct stone per cup-to-kilogram per cup factor of 6.35029318.
Simple example
1 st/cup × 6.35029318 = 6.35029318 kg/cup
1 stone per cup = 6.35029318 kilograms per cup.
Real-world example
1,000 st/cup × 6.35029318 = 6,350.29318 kg/cup
1,000 stones per cup = 6,350.29318 kilograms per cup.
Conversion table
| Stone per Cup (st/cup) | Kilogram per Cup (kg/cup) |
|---|---|
| 0.1 st/cup | 0.635029318 kg/cup |
| 1 st/cup | 6.35029318 kg/cup |
| 10 st/cup | 63.5029318 kg/cup |
| 100 st/cup | 635.029318 kg/cup |
| 1,000 st/cup | 6,350.29318 kg/cup |
| 10,000 st/cup | 63,502.9318 kg/cup |
Reverse conversion: Kilogram per Cup to Stone per Cup
6.35029318 kg/cup × 0.1574730444 = 1 st/cup
6.35029318 kilograms per cup = 1 stones per cup.
stones per cup = kilograms per cup × 0.157473044418
For a page dedicated to this direction, see Kilogram per Cup to Stone per Cup.
Understanding the Stone per Cup (st/cup)
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 cup?
1 stone per cup equals 6.35029318 kilograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to kilogram per cup?
Multiply the stone per cup value by 6.35029318. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cup back to stone per cup?
Use the reverse factor: 1 kilogram per cup equals 0.1574730444 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) 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 cup to kilogram per cup conversion exact?
Yes. Both stone per cup and kilogram per cup 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.