Mass per volume density.
Grams per Cubic foot to Grain per Cubic inches Converter — g/ft3 to gr/in3
Convert Gram per Cubic foot (g/ft3) to Grain per Cubic inch (gr/in3) using the exact conversion factor (1 gram per cubic foot = 0.0089307629 grain per cubic inch). See the formula, worked examples, conversion table, and common uses.
Grams per Cubic foot to Grain per Cubic inches 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 / 3.954272101.
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 Grain per Cubic inches
Gram per Cubic foot and Grain per Cubic inch 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
grain per cubic inches = grams per cubic foot × 0.00893076293573
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 grain per cubic inch equals 3.95427210146 base units, so dividing one by the other gives the direct gram per cubic foot-to-grain per cubic inch factor of 0.00893076293573.
Simple example
1 g/ft3 × 0.008930762936 = 0.0089307629 gr/in3
1 gram per cubic foot = 0.0089307629 grain per cubic inches.
Real-world example
1,000 g/ft3 × 0.008930762936 = 8.930762936 gr/in3
1,000 grams per cubic foot = 8.930762936 grain per cubic inches.
Conversion table
| Gram per Cubic foot (g/ft3) | Grain per Cubic inch (gr/in3) |
|---|---|
| 0.1 g/ft3 | 0.0008930763 gr/in3 |
| 1 g/ft3 | 0.0089307629 gr/in3 |
| 10 g/ft3 | 0.0893076294 gr/in3 |
| 100 g/ft3 | 0.8930762936 gr/in3 |
| 1,000 g/ft3 | 8.930762936 gr/in3 |
| 10,000 g/ft3 | 89.30762936 gr/in3 |
Reverse conversion: Grain per Cubic inch to Gram per Cubic foot
0.0089307629 gr/in3 × 111.9725165 = 0.999999996 g/ft3
0.0089307629 grain per cubic inches = 0.999999996 grams per cubic foot.
grams per cubic foot = grain per cubic inches × 111.97251648
For a page dedicated to this direction, see Grain per Cubic inch 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 Grain per Cubic inch (gr/in3)
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 grain per cubic inches are in 1 gram per cubic foot?
1 gram per cubic foot equals 0.0089307629 grain per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic foot to grain per cubic inch?
Multiply the gram per cubic foot value by 0.008930762936. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic inch back to gram per cubic foot?
Use the reverse factor: 1 grain per cubic inch equals 111.9725165 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 grain per cubic inch?
Grain per Cubic inch (gr/in3) is a unit of density.
Is the gram per cubic foot to grain per cubic inch conversion exact?
Yes. Both gram per cubic foot and grain per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 0.008930762936 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.