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Liquid quotes on a common mass basis

Price per gallon to price per pound

A gallon price is not a pound price. Supply the liquid’s density to compare a volume-based quote with a mass-based quote, using US liquid gallons throughout.

Enter your values

Result

Results are based only on the inputs and assumptions shown here. Nothing you enter is sent or saved.

Formula: USD/lb = (USD/US gal) ÷ (lb/US gal); USD/kg = USD/lb ÷ 0.45359237; mass lb = US gal × density; total USD = US gal × quoted rate

Worked example

At $24 per US gallon and a density of 8 lb/US gal, the liquid costs $3/lb, or about $6.6139/kg. Five US gallons contain 40 lb and cost $120 at that rate.

Match the density to the quoted product

Use the supplier’s density for the actual liquid, concentration and temperature. A water approximation can distort the comparison for another material. Pounds here describe liquid mass, excluding the container.

Put both quotes on the same basis

A quote per Imperial gallon, dry gallon or container needs a different starting conversion. This page uses US liquid gallons. Include taxes, freight or other charges in your input only if you want them included in the calculated unit price.

Use the comparison without changing the product

Equal prices per pound do not make two liquids interchangeable. Concentration, purity and usable ingredient content may differ. The tool converts the price of the whole liquid and does not judge product value or quality.

Explore the related calculation

For a different starting point, try the guide to finding liquid density or return to the main calculator. Browse the complete tool directory for this site.

Reference and corrections

The definitions and assumptions above follow these sources; the examples and calculator arithmetic are original to this page.

Found a problem? Email contact@gallonstopounds.org.