Mass per volume density.
Stones per Pint to Pounds per Cubic foot Converter — st/pt to lb/ft3
Convert Stone per Pint (st/pt) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 stone per pint = 837.8181818 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Stones per Pint to Pounds per Cubic foot 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 / 16.01846337.
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 Pounds per Cubic foot
Stone per Pint and Pound per Cubic foot 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
pounds per cubic foot = stones per pint × 837.818181818
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 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct stone per pint-to-pound per cubic foot factor of 837.818181818.
Simple example
1 st/pt × 837.8181818 = 837.8181818 lb/ft3
1 stone per pint = 837.8181818 pounds per cubic foot.
Real-world example
1,000 st/pt × 837.8181818 = 837,818.1818 lb/ft3
1,000 stones per pint = 837,818.1818 pounds per cubic foot.
Conversion table
| Stone per Pint (st/pt) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 st/pt | 83.78181818 lb/ft3 |
| 1 st/pt | 837.8181818 lb/ft3 |
| 10 st/pt | 8,378.181818 lb/ft3 |
| 100 st/pt | 83,781.81818 lb/ft3 |
| 1,000 st/pt | 837,818.1818 lb/ft3 |
| 10,000 st/pt | 8,378,181.818 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Stone per Pint
837.8181818 lb/ft3 × 0.001193576389 = 1 st/pt
837.8181818 pounds per cubic foot = 1 stones per pint.
stones per pint = pounds per cubic foot × 0.00119357638889
For a page dedicated to this direction, see Pound per Cubic foot to Stone per Pint.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Understanding the Pound per Cubic foot
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Where it's used: United States (construction, engineering, materials specifications)
Uses of the Pound per Cubic foot today
- US construction material density specs (concrete, soil, lumber, insulation)
- US engineering material property tables
- Bulk material handling and shipping weight estimates
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic foot are in 1 stone per pint?
1 stone per pint equals 837.8181818 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert stone per pint to pound per cubic foot?
Multiply the stone per pint value by 837.8181818. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to stone per pint?
Use the reverse factor: 1 pound per cubic foot equals 0.0011935764 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 pound per cubic foot?
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Is the stone per pint to pound per cubic foot conversion exact?
Yes. Both stone per pint and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 837.8181818 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.