Mass per volume density.
Grains per Cubic foot to Dram per Cubic inches Converter — gr/ft3 to dr/in3
Convert Grain per Cubic foot (gr/ft3) to Dram per Cubic inch (dr/in3) using the exact conversion factor (1 grain per cubic foot = 0.000021164 dram per cubic inch). See the formula, worked examples, and conversion table.
Grains per Cubic foot to Dram 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 0.002288351911 / 108.1246278.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic foot to Dram per Cubic inches
Grain per Cubic foot and Dram 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. Both are mass per volume density units.
Formula
dram per cubic inches = grains per cubic foot × 0.000021164021164
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic foot equals 0.00228835191057 base units, and 1 dram per cubic inch equals 108.124627774 base units, so dividing one by the other gives the direct grain per cubic foot-to-dram per cubic inch factor of 0.000021164021164.
Simple example
1 gr/ft3 × 0.00002116402116 = 0.000021164 dr/in3
1 grain per cubic foot = 0.000021164 dram per cubic inches.
Real-world example
1,000 gr/ft3 × 0.00002116402116 = 0.0211640212 dr/in3
1,000 grains per cubic foot = 0.0211640212 dram per cubic inches.
Conversion table
| Grain per Cubic foot (gr/ft3) | Dram per Cubic inch (dr/in3) |
|---|---|
| 0.1 gr/ft3 | 0.0000021164 dr/in3 |
| 1 gr/ft3 | 0.000021164 dr/in3 |
| 10 gr/ft3 | 0.0002116402 dr/in3 |
| 100 gr/ft3 | 0.0021164021 dr/in3 |
| 1,000 gr/ft3 | 0.0211640212 dr/in3 |
| 10,000 gr/ft3 | 0.2116402116 dr/in3 |
Reverse conversion: Dram per Cubic inch to Grain per Cubic foot
0.000021164 dr/in3 × 47250 = 0.999999 gr/ft3
0.000021164 dram per cubic inches = 0.999999 grains per cubic foot.
grains per cubic foot = dram per cubic inches × 47250
For a page dedicated to this direction, see Dram per Cubic inch to Grain per Cubic foot.
Understanding the Grain per Cubic foot (gr/ft3)
Mass per volume density.
Understanding the Dram per Cubic inch (dr/in3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many dram per cubic inches are in 1 grain per cubic foot?
1 grain per cubic foot equals 0.000021164 dram per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic foot to dram per cubic inch?
Multiply the grain per cubic foot value by 0.00002116402116. The converter above does this instantly to whatever precision you set.
How do I convert dram per cubic inch back to grain per cubic foot?
Use the reverse factor: 1 dram per cubic inch equals 47,250 grains per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic foot?
Grain per Cubic foot (gr/ft3) is a unit of density.
What is a dram per cubic inch?
Dram per Cubic inch (dr/in3) is a unit of density.
Is the grain per cubic foot to dram per cubic inch conversion exact?
Yes. Both grain per cubic foot and dram per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 0.00002116402116 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.