Mass concentration.
Pounds per Gallon to Pounds per Milliliter Converter — lb/gal to lb/mL
Convert Pound per Gallon (lb/gal) to Pound per Milliliter (lb/mL) using the exact conversion factor (1 pound per gallon = 0.0002641721 pound per milliliter). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Pounds per Milliliter 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 / 453592.37.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Gallon to Pounds per Milliliter
Pound per Gallon and Pound per Milliliter 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
pounds per milliliter = pounds per gallon × 0.000264172052358
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 pound per milliliter equals 453592.37 base units, so dividing one by the other gives the direct pound per gallon-to-pound per milliliter factor of 0.000264172052358.
Simple example
1 lb/gal × 0.0002641720524 = 0.0002641721 lb/mL
1 pound per gallon = 0.0002641721 pounds per milliliter.
Real-world example
100 lb/gal × 0.0002641720524 = 0.0264172052 lb/mL
100 pounds per gallon = 0.0264172052 pounds per milliliter.
Conversion table
| Pound per Gallon (lb/gal) | Pound per Milliliter (lb/mL) |
|---|---|
| 0.001 lb/gal | 2.641721e-7 lb/mL |
| 0.01 lb/gal | 0.0000026417 lb/mL |
| 0.1 lb/gal | 0.0000264172 lb/mL |
| 1 lb/gal | 0.0002641721 lb/mL |
| 10 lb/gal | 0.0026417205 lb/mL |
| 100 lb/gal | 0.0264172052 lb/mL |
Reverse conversion: Pound per Milliliter to Pound per Gallon
0.0002641721 lb/mL × 3785.411784 = 1.00000018 lb/gal
0.0002641721 pounds per milliliter = 1.00000018 pounds per gallon.
pounds per gallon = pounds per milliliter × 3785.411784
For a page dedicated to this direction, see Pound per Milliliter 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 Pound per Milliliter (lb/mL)
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 pounds per milliliter are in 1 pound per gallon?
1 pound per gallon equals 0.0002641721 pounds per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to pound per milliliter?
Multiply the pound per gallon value by 0.0002641720524. The converter above does this instantly to whatever precision you set.
How do I convert pound per milliliter back to pound per gallon?
Use the reverse factor: 1 pound per milliliter equals 3,785.411784 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 pound per milliliter?
Pound per Milliliter (lb/mL) is a unit of chemistry.
Is the pound per gallon to pound per milliliter conversion exact?
Yes. Both pound per gallon and pound per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 0.0002641720524 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)