Mass concentration.
Pounds per Gallon to Grams per Gallon Converter — lb/gal to g/gal
Convert Pound per Gallon (lb/gal) to Gram per Gallon (g/gal) using the exact conversion factor (1 pound per gallon = 453.59237 gram per gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Grams per Gallon converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Mass concentration.
Result = input x 119.8264273 / 0.2641720524.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Gallon to Grams per Gallon
Pound per Gallon and Gram per Gallon both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Pound per Gallon is most often used for us paint and coatings density specifications.
Formula
grams per gallon = pounds per gallon × 453.59237
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 gram per gallon equals 0.264172052358 base units, so dividing one by the other gives the direct pound per gallon-to-gram per gallon factor of 453.59237.
Simple example
1 lb/gal × 453.59237 = 453.59237 g/gal
1 pound per gallon = 453.59237 grams per gallon.
Real-world example
100 lb/gal × 453.59237 = 45,359.237 g/gal
100 pounds per gallon = 45,359.237 grams per gallon.
Conversion table
| Pound per Gallon (lb/gal) | Gram per Gallon (g/gal) |
|---|---|
| 0.001 lb/gal | 0.45359237 g/gal |
| 0.01 lb/gal | 4.5359237 g/gal |
| 0.1 lb/gal | 45.359237 g/gal |
| 1 lb/gal | 453.59237 g/gal |
| 10 lb/gal | 4,535.9237 g/gal |
| 100 lb/gal | 45,359.237 g/gal |
Reverse conversion: Gram per Gallon to Pound per Gallon
453.59237 g/gal × 0.002204622622 = 1 lb/gal
453.59237 grams per gallon = 1 pound per gallon.
pounds per gallon = grams per gallon × 0.00220462262185
For a page dedicated to this direction, see Gram per Gallon 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 Gram per Gallon (g/gal)
Mass concentration.
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 grams per gallon are in 1 pound per gallon?
1 pound per gallon equals 453.59237 grams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to gram per gallon?
Multiply the pound per gallon value by 453.59237. The converter above does this instantly to whatever precision you set.
How do I convert gram per gallon back to pound per gallon?
Use the reverse factor: 1 gram per gallon equals 0.0022046226 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 gram per gallon?
Gram per Gallon (g/gal) is a unit of chemistry.
Is the pound per gallon to gram per gallon conversion exact?
Yes. Both pound per gallon and gram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 453.59237 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)