Mass per volume density.
Stones per Gallon to Pounds per Cubic foot Converter — st/gal to lb/ft3
Convert Stone per Gallon (st/gal) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 stone per gallon = 104.7272727 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Stones per Gallon 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 1677.569982 / 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 Gallon to Pounds per Cubic foot
Stone per Gallon 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 gallon × 104.727272727
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per gallon equals 1677.56998244 base units, and 1 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct stone per gallon-to-pound per cubic foot factor of 104.727272727.
Simple example
1 st/gal × 104.7272727 = 104.7272727 lb/ft3
1 stone per gallon = 104.7272727 pounds per cubic foot.
Real-world example
1,000 st/gal × 104.7272727 = 104,727.2727 lb/ft3
1,000 stones per gallon = 104,727.2727 pounds per cubic foot.
Conversion table
| Stone per Gallon (st/gal) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 st/gal | 10.47272727 lb/ft3 |
| 1 st/gal | 104.7272727 lb/ft3 |
| 10 st/gal | 1,047.272727 lb/ft3 |
| 100 st/gal | 10,472.72727 lb/ft3 |
| 1,000 st/gal | 104,727.2727 lb/ft3 |
| 10,000 st/gal | 1,047,272.727 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Stone per Gallon
104.7272727 lb/ft3 × 0.009548611111 = 0.9999999997 st/gal
104.7272727 pounds per cubic foot = 0.9999999997 stones per gallon.
stones per gallon = pounds per cubic foot × 0.00954861111111
For a page dedicated to this direction, see Pound per Cubic foot to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
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 gallon?
1 stone per gallon equals 104.7272727 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to pound per cubic foot?
Multiply the stone per gallon value by 104.7272727. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to stone per gallon?
Use the reverse factor: 1 pound per cubic foot equals 0.0095486111 stones per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per gallon?
Stone per Gallon (st/gal) 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 gallon to pound per cubic foot conversion exact?
Yes. Both stone per gallon and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 104.7272727 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.