Mass per volume density.
Grains per Imperial gallon to Pounds per Cubic foot Converter — gr/imp gal to lb/ft3
Convert Grain per Imperial gallon (gr/imp gal) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 grain per imperial gallon = 0.0008898336 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Grains per Imperial gallon to Pounds 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 0.01425376752 / 16.01846337.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Imperial gallon to Pounds per Cubic foot
Grain per Imperial gallon and Pound 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
pounds per cubic foot = grains per imperial gallon × 0.000889833637006
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per imperial gallon equals 0.0142537675233 base units, and 1 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct grain per imperial gallon-to-pound per cubic foot factor of 0.000889833637006.
Simple example
1 gr/imp gal × 0.000889833637 = 0.0008898336 lb/ft3
1 grain per imperial gallon = 0.0008898336 pounds per cubic foot.
Real-world example
1,000 gr/imp gal × 0.000889833637 = 0.889833637 lb/ft3
1,000 grains per imperial gallon = 0.889833637 pounds per cubic foot.
Conversion table
| Grain per Imperial gallon (gr/imp gal) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 gr/imp gal | 0.0000889834 lb/ft3 |
| 1 gr/imp gal | 0.0008898336 lb/ft3 |
| 10 gr/imp gal | 0.0088983364 lb/ft3 |
| 100 gr/imp gal | 0.0889833637 lb/ft3 |
| 1,000 gr/imp gal | 0.889833637 lb/ft3 |
| 10,000 gr/imp gal | 8.89833637 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Grain per Imperial gallon
0.0008898336 lb/ft3 × 1123.805573 = 0.9999999584 gr/imp gal
0.0008898336 pounds per cubic foot = 0.9999999584 grains per imperial gallon.
grains per imperial gallon = pounds per cubic foot × 1123.80557265
For a page dedicated to this direction, see Pound per Cubic foot to Grain per Imperial gallon.
Understanding the Grain per Imperial gallon (gr/imp gal)
Mass per volume density.
Understanding the Pound per Cubic foot
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Where it's used: United States (construction, engineering, materials specifications)
Uses of the Pound per Cubic foot today
- US construction material density specs (concrete, soil, lumber, insulation)
- US engineering material property tables
- Bulk material handling and shipping weight estimates
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic foot are in 1 grain per imperial gallon?
1 grain per imperial gallon equals 0.0008898336 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert grain per imperial gallon to pound per cubic foot?
Multiply the grain per imperial gallon value by 0.000889833637. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to grain per imperial gallon?
Use the reverse factor: 1 pound per cubic foot equals 1,123.805573 grains per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per imperial gallon?
Grain per Imperial gallon (gr/imp gal) is a unit of density.
What is a pound per cubic foot?
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Is the grain per imperial gallon to pound per cubic foot conversion exact?
Yes. Both grain per imperial gallon and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 0.000889833637 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.