Mass per volume density.
Grams per Cubic foot to Grains per Gallon Converter — g/ft3 to gr/gal
Convert Gram per Cubic foot (g/ft3) to Grain per Gallon (gr/gal) using the exact conversion factor (1 gram per cubic foot = 2.063006238 grain per gallon). See the formula, worked examples, conversion table, and common uses.
Grams per Cubic foot to Grains per Gallon 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 / 0.01711806105.
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 Grains per Gallon
Gram per Cubic foot and Grain per Gallon 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
grains per gallon = grams per cubic foot × 2.06300623815
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 gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct gram per cubic foot-to-grain per gallon factor of 2.06300623815.
Simple example
1 g/ft3 × 2.063006238 = 2.063006238 gr/gal
1 gram per cubic foot = 2.063006238 grains per gallon.
Real-world example
1,000 g/ft3 × 2.063006238 = 2,063.006238 gr/gal
1,000 grams per cubic foot = 2,063.006238 grains per gallon.
Conversion table
| Gram per Cubic foot (g/ft3) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 g/ft3 | 0.2063006238 gr/gal |
| 1 g/ft3 | 2.063006238 gr/gal |
| 10 g/ft3 | 20.63006238 gr/gal |
| 100 g/ft3 | 206.3006238 gr/gal |
| 1,000 g/ft3 | 2,063.006238 gr/gal |
| 10,000 g/ft3 | 20,630.06238 gr/gal |
Reverse conversion: Grain per Gallon to Gram per Cubic foot
2.063006238 gr/gal × 0.4847295086 = 0.9999999999 g/ft3
2.063006238 grains per gallon = 0.9999999999 grams per cubic foot.
grams per cubic foot = grains per gallon × 0.484729508571
For a page dedicated to this direction, see Grain per Gallon 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 Gallon (gr/gal)
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 grains per gallon are in 1 gram per cubic foot?
1 gram per cubic foot equals 2.063006238 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic foot to grain per gallon?
Multiply the gram per cubic foot value by 2.063006238. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to gram per cubic foot?
Use the reverse factor: 1 grain per gallon equals 0.4847295086 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 gallon?
Grain per Gallon (gr/gal) is a unit of density.
Is the gram per cubic foot to grain per gallon conversion exact?
Yes. Both gram per cubic foot and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 2.063006238 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.