Mass per volume density.
Long tons per Cubic foot to Stones per Cup Converter — long ton/ft3 to st/cup
Convert Long ton per Cubic foot (long ton/ft3) to Stone per Cup (st/cup) using the exact conversion factor (1 long ton per cubic foot = 1.336805556 stone per cup). See the formula, worked examples, and conversion table.
Long tons per Cubic foot to Stones 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 35881.35796 / 26841.11972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Long tons per Cubic foot to Stones per Cup
Long ton per Cubic foot and Stone 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
stones per cup = long tons per cubic foot × 1.33680555556
This factor comes from each unit's defined relationship to the category's base unit: 1 long ton per cubic foot equals 35881.3579577 base units, and 1 stone per cup equals 26841.119719 base units, so dividing one by the other gives the direct long ton per cubic foot-to-stone per cup factor of 1.33680555556.
Simple example
1 long ton/ft3 × 1.336805556 = 1.336805556 st/cup
1 long ton per cubic foot = 1.336805556 stones per cup.
Real-world example
1,000 long ton/ft3 × 1.336805556 = 1,336.805556 st/cup
1,000 long tons per cubic foot = 1,336.805556 stones per cup.
Conversion table
| Long ton per Cubic foot (long ton/ft3) | Stone per Cup (st/cup) |
|---|---|
| 0.1 long ton/ft3 | 0.1336805556 st/cup |
| 1 long ton/ft3 | 1.336805556 st/cup |
| 10 long ton/ft3 | 13.36805556 st/cup |
| 100 long ton/ft3 | 133.6805556 st/cup |
| 1,000 long ton/ft3 | 1,336.805556 st/cup |
| 10,000 long ton/ft3 | 13,368.05556 st/cup |
Reverse conversion: Stone per Cup to Long ton per Cubic foot
1.336805556 st/cup × 0.7480519481 = 1 long ton/ft3
1.336805556 stones per cup = 1 long tons per cubic foot.
long tons per cubic foot = stones per cup × 0.748051948052
For a page dedicated to this direction, see Stone per Cup to Long ton per Cubic foot.
Understanding the Long ton per Cubic foot (long ton/ft3)
Mass per volume density.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cup are in 1 long ton per cubic foot?
1 long ton per cubic foot equals 1.336805556 stones per cup, using the exact defined conversion factor rather than an estimate.
How do I convert long ton per cubic foot to stone per cup?
Multiply the long ton per cubic foot value by 1.336805556. The converter above does this instantly to whatever precision you set.
How do I convert stone per cup back to long ton per cubic foot?
Use the reverse factor: 1 stone per cup equals 0.7480519481 long tons per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a long ton per cubic foot?
Long ton per Cubic foot (long ton/ft3) is a unit of density.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
Is the long ton per cubic foot to stone per cup conversion exact?
Yes. Both long ton per cubic foot and stone per cup are defined by fixed standards rather than physical artifacts, so the factor of 1.336805556 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.