Mass per volume density.
Ounces per Cubic foot to Grains per Cubic foot Converter — oz/ft3 to gr/ft3
Convert Ounce per Cubic foot (oz/ft3) to Grain per Cubic foot (gr/ft3) using the exact conversion factor (1 ounce per cubic foot = 437.5 grain per cubic foot). See the formula, worked examples, and conversion table.
Ounces per Cubic foot to Grains 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 1.001153961 / 0.002288351911.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Cubic foot to Grains per Cubic foot
Ounce per Cubic foot and Grain 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
grains per cubic foot = ounces per cubic foot × 437.5
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic foot equals 1.00115396087 base units, and 1 grain per cubic foot equals 0.00228835191057 base units, so dividing one by the other gives the direct ounce per cubic foot-to-grain per cubic foot factor of 437.5.
Simple example
1 oz/ft3 × 437.5 = 437.5 gr/ft3
1 ounce per cubic foot = 437.5 grains per cubic foot.
Real-world example
1,000 oz/ft3 × 437.5 = 437,500 gr/ft3
1,000 ounces per cubic foot = 437,500 grains per cubic foot.
Conversion table
| Ounce per Cubic foot (oz/ft3) | Grain per Cubic foot (gr/ft3) |
|---|---|
| 0.1 oz/ft3 | 43.75 gr/ft3 |
| 1 oz/ft3 | 437.5 gr/ft3 |
| 10 oz/ft3 | 4,375 gr/ft3 |
| 100 oz/ft3 | 43,750 gr/ft3 |
| 1,000 oz/ft3 | 437,500 gr/ft3 |
| 10,000 oz/ft3 | 4,375,000 gr/ft3 |
Reverse conversion: Grain per Cubic foot to Ounce per Cubic foot
437.5 gr/ft3 × 0.002285714286 = 1 oz/ft3
437.5 grains per cubic foot = 1 ounces per cubic foot.
ounces per cubic foot = grains per cubic foot × 0.00228571428571
For a page dedicated to this direction, see Grain per Cubic foot to Ounce per Cubic foot.
Understanding the Ounce per Cubic foot (oz/ft3)
Mass per volume density.
Understanding the Grain per Cubic foot (gr/ft3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic foot are in 1 ounce per cubic foot?
1 ounce per cubic foot equals 437.5 grains per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic foot to grain per cubic foot?
Multiply the ounce per cubic foot value by 437.5. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic foot back to ounce per cubic foot?
Use the reverse factor: 1 grain per cubic foot equals 0.0022857143 ounces per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic foot?
Ounce per Cubic foot (oz/ft3) is a unit of density.
What is a grain per cubic foot?
Grain per Cubic foot (gr/ft3) is a unit of density.
Is the ounce per cubic foot to grain per cubic foot conversion exact?
Yes. Both ounce per cubic foot and grain per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 437.5 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.