Mass concentration.
Pounds per Gallon to Pounds per Fluid ounce Converter — lb/gal to lb/fl oz
Convert Pound per Gallon (lb/gal) to Pound per Fluid ounce (lb/fl oz) using the exact conversion factor (1 pound per gallon = 0.0078125 pound per fluid ounce). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Pounds per Fluid ounce 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 / 15337.7827.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Gallon to Pounds per Fluid ounce
Pound per Gallon and Pound per Fluid ounce 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 fluid ounce = pounds per gallon × 0.0078125
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 fluid ounce equals 15337.7826966 base units, so dividing one by the other gives the direct pound per gallon-to-pound per fluid ounce factor of 0.0078125.
Simple example
1 lb/gal × 0.0078125 = 0.0078125 lb/fl oz
1 pound per gallon = 0.0078125 pounds per fluid ounce.
Real-world example
100 lb/gal × 0.0078125 = 0.78125 lb/fl oz
100 pounds per gallon = 0.78125 pounds per fluid ounce.
Conversion table
| Pound per Gallon (lb/gal) | Pound per Fluid ounce (lb/fl oz) |
|---|---|
| 0.001 lb/gal | 0.0000078125 lb/fl oz |
| 0.01 lb/gal | 0.000078125 lb/fl oz |
| 0.1 lb/gal | 0.00078125 lb/fl oz |
| 1 lb/gal | 0.0078125 lb/fl oz |
| 10 lb/gal | 0.078125 lb/fl oz |
| 100 lb/gal | 0.78125 lb/fl oz |
Reverse conversion: Pound per Fluid ounce to Pound per Gallon
0.0078125 lb/fl oz × 128 = 1 lb/gal
0.0078125 pounds per fluid ounce = 1 pound per gallon.
pounds per gallon = pounds per fluid ounce × 128
For a page dedicated to this direction, see Pound per Fluid ounce 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 Fluid ounce (lb/fl oz)
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 fluid ounce are in 1 pound per gallon?
1 pound per gallon equals 0.0078125 pounds per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to pound per fluid ounce?
Multiply the pound per gallon value by 0.0078125. The converter above does this instantly to whatever precision you set.
How do I convert pound per fluid ounce back to pound per gallon?
Use the reverse factor: 1 pound per fluid ounce equals 128 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 fluid ounce?
Pound per Fluid ounce (lb/fl oz) is a unit of chemistry.
Is the pound per gallon to pound per fluid ounce conversion exact?
Yes. Both pound per gallon and pound per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.0078125 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)