Mass per volume density.
Stones per Pint to Hectograms per Cup Converter — st/pt to hg/cup
Convert Stone per Pint (st/pt) to Hectogram per Cup (hg/cup) using the exact conversion factor (1 stone per pint = 31.7514659 hectogram per cup). See the formula, worked examples, and conversion table.
Stones per Pint to Hectograms 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 13420.55986 / 422.6752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Pint to Hectograms per Cup
Stone per Pint and Hectogram 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
hectograms per cup = stones per pint × 31.7514659
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per pint equals 13420.5598595 base units, and 1 hectogram per cup equals 422.675283773 base units, so dividing one by the other gives the direct stone per pint-to-hectogram per cup factor of 31.7514659.
Simple example
1 st/pt × 31.7514659 = 31.7514659 hg/cup
1 stone per pint = 31.7514659 hectograms per cup.
Real-world example
1,000 st/pt × 31.7514659 = 31,751.4659 hg/cup
1,000 stones per pint = 31,751.4659 hectograms per cup.
Conversion table
| Stone per Pint (st/pt) | Hectogram per Cup (hg/cup) |
|---|---|
| 0.1 st/pt | 3.17514659 hg/cup |
| 1 st/pt | 31.7514659 hg/cup |
| 10 st/pt | 317.514659 hg/cup |
| 100 st/pt | 3,175.14659 hg/cup |
| 1,000 st/pt | 31,751.4659 hg/cup |
| 10,000 st/pt | 317,514.659 hg/cup |
Reverse conversion: Hectogram per Cup to Stone per Pint
31.7514659 hg/cup × 0.03149460888 = 1 st/pt
31.7514659 hectograms per cup = 1 stones per pint.
stones per pint = hectograms per cup × 0.0314946088836
For a page dedicated to this direction, see Hectogram per Cup to Stone per Pint.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Understanding the Hectogram per Cup (hg/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per cup are in 1 stone per pint?
1 stone per pint equals 31.7514659 hectograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per pint to hectogram per cup?
Multiply the stone per pint value by 31.7514659. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per cup back to stone per pint?
Use the reverse factor: 1 hectogram per cup equals 0.0314946089 stones per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per pint?
Stone per Pint (st/pt) is a unit of density.
What is a hectogram per cup?
Hectogram per Cup (hg/cup) is a unit of density.
Is the stone per pint to hectogram per cup conversion exact?
Yes. Both stone per pint and hectogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 31.7514659 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.