Mass per volume density.
Grams per Cubic foot to Stones per Cup Converter — g/ft3 to st/cup
Convert Gram per Cubic foot (g/ft3) to Stone per Cup (st/cup) using the exact conversion factor (1 gram per cubic foot = 0.0000013157 stone per cup). See the formula, worked examples, conversion table, and common uses.
Grams 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 0.03531466672 / 26841.11972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cubic foot to Stones per Cup
Gram 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. Gram per Cubic foot is most often used for can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered.
Formula
stones per cup = grams per cubic foot × 0.00000131569275392
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic foot equals 0.0353146667215 base units, and 1 stone per cup equals 26841.119719 base units, so dividing one by the other gives the direct gram per cubic foot-to-stone per cup factor of 0.00000131569275392.
Simple example
1 g/ft3 × 0.000001315692754 = 0.0000013157 st/cup
1 gram per cubic foot = 0.0000013157 stones per cup.
Real-world example
1,000 g/ft3 × 0.000001315692754 = 0.0013156928 st/cup
1,000 grams per cubic foot = 0.0013156928 stones per cup.
Conversion table
| Gram per Cubic foot (g/ft3) | Stone per Cup (st/cup) |
|---|---|
| 0.1 g/ft3 | 1.315693e-7 st/cup |
| 1 g/ft3 | 0.0000013157 st/cup |
| 10 g/ft3 | 0.0000131569 st/cup |
| 100 g/ft3 | 0.0001315693 st/cup |
| 1,000 g/ft3 | 0.0013156928 st/cup |
| 10,000 g/ft3 | 0.0131569275 st/cup |
Reverse conversion: Stone per Cup to Gram per Cubic foot
0.0000013157 st/cup × 760055.8694 = 1.000005507 g/ft3
0.0000013157 stones per cup = 1.000005507 grams per cubic foot.
grams per cubic foot = stones per cup × 760055.86944
For a page dedicated to this direction, see Stone per Cup to Gram per Cubic foot.
Understanding the Gram per Cubic foot
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. It is classified as a mixed metric/US customary density unit.
Uses of the Gram per Cubic foot today
- Can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Gram per Cubic foot — sources
- BIPM SI Brochure — Gram and cubic foot as units combinable to express density, though not a standard industry pairing for general materials.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cup are in 1 gram per cubic foot?
1 gram per cubic foot equals 0.0000013157 stones per cup, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic foot to stone per cup?
Multiply the gram per cubic foot value by 0.000001315692754. The converter above does this instantly to whatever precision you set.
How do I convert stone per cup back to gram per cubic foot?
Use the reverse factor: 1 stone per cup equals 760,055.8694 grams per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic foot?
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. It is classified as a mixed metric/US customary density unit.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
Is the gram per cubic foot to stone per cup conversion exact?
Yes. Both gram per cubic foot and stone per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.000001315692754 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.