Mass per volume density.
Stones per Imperial gallon to Kilograms per Cubic foot Converter — st/imp gal to kg/ft3
Convert Stone per Imperial gallon (st/imp gal) to Kilogram per Cubic foot (kg/ft3) using the exact conversion factor (1 stone per imperial gallon = 39.55493133 kilogram per cubic foot). See the formula, worked examples, conversion table, and common uses.
Stones per Imperial gallon to Kilograms 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 1396.869217 / 35.31466672.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Imperial gallon to Kilograms per Cubic foot
Stone per Imperial gallon and Kilogram 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
kilograms per cubic foot = stones per imperial gallon × 39.5549313349
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per imperial gallon equals 1396.86921728 base units, and 1 kilogram per cubic foot equals 35.3146667215 base units, so dividing one by the other gives the direct stone per imperial gallon-to-kilogram per cubic foot factor of 39.5549313349.
Simple example
1 st/imp gal × 39.55493133 = 39.55493133 kg/ft3
1 stone per imperial gallon = 39.55493133 kilograms per cubic foot.
Real-world example
1,000 st/imp gal × 39.55493133 = 39,554.93133 kg/ft3
1,000 stones per imperial gallon = 39,554.93133 kilograms per cubic foot.
Conversion table
| Stone per Imperial gallon (st/imp gal) | Kilogram per Cubic foot (kg/ft3) |
|---|---|
| 0.1 st/imp gal | 3.955493133 kg/ft3 |
| 1 st/imp gal | 39.55493133 kg/ft3 |
| 10 st/imp gal | 395.5493133 kg/ft3 |
| 100 st/imp gal | 3,955.493133 kg/ft3 |
| 1,000 st/imp gal | 39,554.93133 kg/ft3 |
| 10,000 st/imp gal | 395,549.3133 kg/ft3 |
Reverse conversion: Kilogram per Cubic foot to Stone per Imperial gallon
39.55493133 kg/ft3 × 0.02528129784 = 0.9999999999 st/imp gal
39.55493133 kilograms per cubic foot = 0.9999999999 stones per imperial gallon.
stones per imperial gallon = kilograms per cubic foot × 0.025281297837
For a page dedicated to this direction, see Kilogram per Cubic foot to Stone per Imperial gallon.
Understanding the Stone per Imperial gallon (st/imp gal)
Mass per volume density.
Understanding the Kilogram per Cubic foot
Kilogram per Cubic foot (kg/ft3) measures density. A mathematically valid way to express density in kilograms per cubic foot. It is classified as a mixed metric/US customary density unit.
Uses of the Kilogram per Cubic foot today
- Can be used to express the density of construction and bulk materials such as insulation, soil, or aggregate — in practice, pounds per cubic foot (US) or tons per cubic yard are the units more commonly seen in US construction references
Kilogram per Cubic foot — sources
- US construction and materials-estimating references — US construction density figures are typically given in pounds per cubic foot or tons per cubic yard rather than kilograms per cubic foot.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic foot are in 1 stone per imperial gallon?
1 stone per imperial gallon equals 39.55493133 kilograms per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert stone per imperial gallon to kilogram per cubic foot?
Multiply the stone per imperial gallon value by 39.55493133. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic foot back to stone per imperial gallon?
Use the reverse factor: 1 kilogram per cubic foot equals 0.0252812978 stones per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per imperial gallon?
Stone per Imperial gallon (st/imp gal) is a unit of density.
What is a kilogram per cubic foot?
Kilogram per Cubic foot (kg/ft3) measures density. A mathematically valid way to express density in kilograms per cubic foot. It is classified as a mixed metric/US customary density unit.
Is the stone per imperial gallon to kilogram per cubic foot conversion exact?
Yes. Both stone per imperial gallon and kilogram per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 39.55493133 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.