Mass per volume density.
Stones per Pint to Long tons per Cup Converter — st/pt to long ton/cup
Convert Stone per Pint (st/pt) to Long ton per Cup (long ton/cup) using the exact conversion factor (1 stone per pint = 0.003125 long ton per cup). See the formula, worked examples, and conversion table.
Stones per Pint to Long tons 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 / 4.29457916e+6.
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 Long tons per Cup
Stone per Pint and Long ton 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
long tons per cup = stones per pint × 0.003125
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 long ton per cup equals 4294579.15504 base units, so dividing one by the other gives the direct stone per pint-to-long ton per cup factor of 0.003125.
Simple example
1 st/pt × 0.003125 = 0.003125 long ton/cup
1 stone per pint = 0.003125 long tons per cup.
Real-world example
1,000 st/pt × 0.003125 = 3.125 long ton/cup
1,000 stones per pint = 3.125 long tons per cup.
Conversion table
| Stone per Pint (st/pt) | Long ton per Cup (long ton/cup) |
|---|---|
| 0.1 st/pt | 0.0003125 long ton/cup |
| 1 st/pt | 0.003125 long ton/cup |
| 10 st/pt | 0.03125 long ton/cup |
| 100 st/pt | 0.3125 long ton/cup |
| 1,000 st/pt | 3.125 long ton/cup |
| 10,000 st/pt | 31.25 long ton/cup |
Reverse conversion: Long ton per Cup to Stone per Pint
0.003125 long ton/cup × 320 = 1 st/pt
0.003125 long tons per cup = 1 stones per pint.
stones per pint = long tons per cup × 320
For a page dedicated to this direction, see Long ton per Cup to Stone per Pint.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Understanding the Long ton per Cup (long ton/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per cup are in 1 stone per pint?
1 stone per pint equals 0.003125 long tons per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per pint to long ton per cup?
Multiply the stone per pint value by 0.003125. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cup back to stone per pint?
Use the reverse factor: 1 long ton per cup equals 320 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 long ton per cup?
Long ton per Cup (long ton/cup) is a unit of density.
Is the stone per pint to long ton per cup conversion exact?
Yes. Both stone per pint and long ton per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.003125 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.