Mass per volume density.
Pounds per Gallon to Kilograms per Cubic Meter Converter — lb/gal to kg/m3
Convert Pound per Gallon (lb/gal) to Kilogram per Cubic Meter (kg/m3) using the exact conversion factor (1 pound per gallon = 119.8264273 kilogram per cubic meter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pounds per Gallon to Kilograms per Cubic Meter 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 / 1.
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 Kilograms per Cubic Meter
Pound per Gallon and Kilogram per Cubic Meter 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 typically associated with united States (paint, fuel, and industrial liquid density specifications), while Kilogram per Cubic Meter is typically associated with universal — the official SI unit for density, used throughout physics and engineering worldwide.
Formula
kilograms per cubic meter = pounds per gallon × 119.826427317
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 kilogram per cubic meter equals 1 base unit, so dividing one by the other gives the direct pound per gallon-to-kilogram per cubic meter factor of 119.826427317.
Simple example
1 lb/gal × 119.8264273 = 119.8264273 kg/m3
1 pound per gallon = 119.8264273 kilograms per cubic meter.
Real-world example
1,000 lb/gal × 119.8264273 = 119,826.4273 kg/m3
1,000 pounds per gallon = 119,826.4273 kilograms per cubic meter.
Conversion table
| Pound per Gallon (lb/gal) | Kilogram per Cubic Meter (kg/m3) |
|---|---|
| 0.1 lb/gal | 11.98264273 kg/m3 |
| 1 lb/gal | 119.8264273 kg/m3 |
| 10 lb/gal | 1,198.264273 kg/m3 |
| 100 lb/gal | 11,982.64273 kg/m3 |
| 1,000 lb/gal | 119,826.4273 kg/m3 |
| 10,000 lb/gal | 1,198,264.273 kg/m3 |
Reverse conversion: Kilogram per Cubic Meter to Pound per Gallon
119.8264273 kg/m3 × 0.008345404452 = 0.9999999999 lb/gal
119.8264273 kilograms per cubic meter = 0.9999999999 pounds per gallon.
pounds per gallon = kilograms per cubic meter × 0.00834540445202
For a page dedicated to this direction, see Kilogram per Cubic Meter to Pound per Gallon.
Pound per Gallon vs. Kilogram per Cubic Meter
| Aspect | Pound per Gallon | Kilogram per Cubic Meter |
|---|---|---|
| Family | US customary density unit | SI coherent derived unit |
| Typical use | US paint and coatings density specifications | Physics and engineering reference density values |
| Where it's used | United States (paint, fuel, and industrial liquid density specifications) | Universal — the official SI unit for density, used throughout physics and engineering worldwide |
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 Kilogram per Cubic Meter
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Where it's used: Universal — the official SI unit for density, used throughout physics and engineering worldwide
kg/m³ vs. g/L vs. kg/L. All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Uses of the Kilogram per Cubic Meter today
- Physics and engineering reference density values
- Material property tables in scientific literature
- Fluid dynamics and structural engineering calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Kilogram per Cubic Meter — sources
- BIPM SI Brochure, 9th edition — Kilogram per cubic meter as the SI coherent derived unit for density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic meter are in 1 pound per gallon?
1 pound per gallon equals 119.8264273 kilograms per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to kilogram per cubic meter?
Multiply the pound per gallon value by 119.8264273. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic meter back to pound per gallon?
Use the reverse factor: 1 kilogram per cubic meter equals 0.0083454045 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 kilogram per cubic meter?
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Is the pound per gallon to kilogram per cubic meter conversion exact?
Yes. Both pound per gallon and kilogram per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 119.8264273 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)