Mass per volume density.
Pounds per Gallon to Imperial hundredweight per Cubic inches Converter — lb/gal to long cwt/in3
Convert Pound per Gallon (lb/gal) to Imperial hundredweight per Cubic inch (long cwt/in3) using the exact conversion factor (1 pound per gallon = 0.0000386518 imperial hundredweight per cubic inch). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Imperial hundredweight 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 119.8264273 / 3.10014933e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Gallon to Imperial hundredweight per Cubic inches
Pound per Gallon and Imperial hundredweight 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. Pound per Gallon is most often used for us paint and coatings density specifications.
Formula
imperial hundredweight per cubic inches = pounds per gallon × 0.0000386518243661
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per gallon equals 119.826427317 base units, and 1 imperial hundredweight per cubic inch equals 3100149.32754 base units, so dividing one by the other gives the direct pound per gallon-to-imperial hundredweight per cubic inch factor of 0.0000386518243661.
Simple example
1 lb/gal × 0.00003865182437 = 0.0000386518 long cwt/in3
1 pound per gallon = 0.0000386518 imperial hundredweight per cubic inches.
Real-world example
1,000 lb/gal × 0.00003865182437 = 0.0386518244 long cwt/in3
1,000 pounds per gallon = 0.0386518244 imperial hundredweight per cubic inches.
Conversion table
| Pound per Gallon (lb/gal) | Imperial hundredweight per Cubic inch (long cwt/in3) |
|---|---|
| 0.1 lb/gal | 0.0000038652 long cwt/in3 |
| 1 lb/gal | 0.0000386518 long cwt/in3 |
| 10 lb/gal | 0.0003865182 long cwt/in3 |
| 100 lb/gal | 0.0038651824 long cwt/in3 |
| 1,000 lb/gal | 0.0386518244 long cwt/in3 |
| 10,000 lb/gal | 0.3865182437 long cwt/in3 |
Reverse conversion: Imperial hundredweight per Cubic inch to Pound per Gallon
0.0000386518 long cwt/in3 × 25872 = 0.9999993696 lb/gal
0.0000386518 imperial hundredweight per cubic inches = 0.9999993696 pounds per gallon.
pounds per gallon = imperial hundredweight per cubic inches × 25872
For a page dedicated to this direction, see Imperial hundredweight per Cubic inch to Pound per Gallon.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Understanding the Imperial hundredweight per Cubic inch (long cwt/in3)
Mass per volume density.
Pound per Gallon — 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 imperial hundredweight per cubic inches are in 1 pound per gallon?
1 pound per gallon equals 0.0000386518 imperial hundredweight per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to imperial hundredweight per cubic inch?
Multiply the pound per gallon value by 0.00003865182437. The converter above does this instantly to whatever precision you set.
How do I convert imperial hundredweight per cubic inch back to pound per gallon?
Use the reverse factor: 1 imperial hundredweight per cubic inch equals 25,872 pounds per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
What is a imperial hundredweight per cubic inch?
Imperial hundredweight per Cubic inch (long cwt/in3) is a unit of density.
Is the pound per gallon to imperial hundredweight per cubic inch conversion exact?
Yes. Both pound per gallon and imperial hundredweight per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 0.00003865182437 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Where is the pound per gallon still used today?
United States (paint, fuel, and industrial liquid density specifications)