Mass per volume density.
Pound per Cubic inches to Grams per Imperial gallon Converter — lb/in3 to g/imp gal
Convert Pound per Cubic inch (lb/in3) to Gram per Imperial gallon (g/imp gal) using the exact conversion factor (1 pound per cubic inch = 125,835.338 gram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Grams per Imperial 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 27679.90471 / 0.2199692483.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pound per Cubic inches to Grams per Imperial gallon
Pound per Cubic inch and Gram per Imperial 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. Pound per Cubic inch is most often used for used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure.
Formula
grams per imperial gallon = pound per cubic inches × 125835.338004
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic inch equals 27679.9047102 base units, and 1 gram per imperial gallon equals 0.219969248299 base units, so dividing one by the other gives the direct pound per cubic inch-to-gram per imperial gallon factor of 125835.338004.
Simple example
1 lb/in3 × 125835.338 = 125,835.338 g/imp gal
1 pound per cubic inch = 125,835.338 grams per imperial gallon.
Real-world example
1,000 lb/in3 × 125835.338 = 125,835,338 g/imp gal
1,000 pound per cubic inches = 125,835,338 grams per imperial gallon.
Conversion table
| Pound per Cubic inch (lb/in3) | Gram per Imperial gallon (g/imp gal) |
|---|---|
| 0.1 lb/in3 | 12,583.5338 g/imp gal |
| 1 lb/in3 | 125,835.338 g/imp gal |
| 10 lb/in3 | 1,258,353.38 g/imp gal |
| 100 lb/in3 | 12,583,533.8 g/imp gal |
| 1,000 lb/in3 | 125,835,338 g/imp gal |
| 10,000 lb/in3 | 1,258,353,380 g/imp gal |
Reverse conversion: Gram per Imperial gallon to Pound per Cubic inch
1 g/imp gal × 0.000007946893264 = 0.0000079469 lb/in3
1 gram per imperial gallon = 0.0000079469 pound per cubic inches.
pound per cubic inches = grams per imperial gallon × 0.00000794689326434
For a page dedicated to this direction, see Gram per Imperial gallon to Pound per Cubic inch.
Understanding the Pound per Cubic inch
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
Where it's used: United States
Uses of the Pound per Cubic inch today
- Used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure
Understanding the Gram per Imperial gallon (g/imp gal)
Mass per volume density.
Pound per Cubic inch — sources
- US materials-engineering reference tables — Pounds per cubic inch is a commonly tabulated density unit for metals in US machining and materials references.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per imperial gallon are in 1 pound per cubic inch?
1 pound per cubic inch equals 125,835.338 grams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to gram per imperial gallon?
Multiply the pound per cubic inch value by 125835.338. The converter above does this instantly to whatever precision you set.
How do I convert gram per imperial gallon back to pound per cubic inch?
Use the reverse factor: 1 gram per imperial gallon equals 0.0000079469 pound per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic inch?
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
What is a gram per imperial gallon?
Gram per Imperial gallon (g/imp gal) is a unit of density.
Is the pound per cubic inch to gram per imperial gallon conversion exact?
Yes. Both pound per cubic inch and gram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 125835.338 used above is exact to as many digits as you choose to display.
Where is the pound per cubic inch still used today?
United States
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.