Mass per volume density.
Hectograms per Cubic Meter to Pounds per Gallon Converter — hg/m3 to lb/gal
Convert Hectogram per Cubic Meter (hg/m3) to Pound per Gallon (lb/gal) using the exact conversion factor (1 hectogram per cubic meter = 0.0008345404 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Hectograms per Cubic Meter to Pounds per Gallon 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 0.1 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectograms per Cubic Meter to Pounds per Gallon
Hectogram per Cubic Meter and Pound per Gallon 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. Both are mass per volume density units.
Formula
pounds per gallon = hectograms per cubic meter × 0.000834540445202
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogram per cubic meter equals 0.1 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct hectogram per cubic meter-to-pound per gallon factor of 0.000834540445202.
Simple example
1 hg/m3 × 0.0008345404452 = 0.0008345404 lb/gal
1 hectogram per cubic meter = 0.0008345404 pounds per gallon.
Real-world example
1,000 hg/m3 × 0.0008345404452 = 0.8345404452 lb/gal
1,000 hectograms per cubic meter = 0.8345404452 pounds per gallon.
Conversion table
| Hectogram per Cubic Meter (hg/m3) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 hg/m3 | 0.000083454 lb/gal |
| 1 hg/m3 | 0.0008345404 lb/gal |
| 10 hg/m3 | 0.0083454045 lb/gal |
| 100 hg/m3 | 0.0834540445 lb/gal |
| 1,000 hg/m3 | 0.8345404452 lb/gal |
| 10,000 hg/m3 | 8.345404452 lb/gal |
Reverse conversion: Pound per Gallon to Hectogram per Cubic Meter
0.0008345404 lb/gal × 1198.264273 = 0.9999999458 hg/m3
0.0008345404 pounds per gallon = 0.9999999458 hectograms per cubic meter.
hectograms per cubic meter = pounds per gallon × 1198.26427317
For a page dedicated to this direction, see Pound per Gallon to Hectogram per Cubic Meter.
Understanding the Hectogram per Cubic Meter (hg/m3)
Mass per volume density.
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
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 gallon are in 1 hectogram per cubic meter?
1 hectogram per cubic meter equals 0.0008345404 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert hectogram per cubic meter to pound per gallon?
Multiply the hectogram per cubic meter value by 0.0008345404452. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to hectogram per cubic meter?
Use the reverse factor: 1 pound per gallon equals 1,198.264273 hectograms per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogram per cubic meter?
Hectogram per Cubic Meter (hg/m3) is a unit of density.
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.
Is the hectogram per cubic meter to pound per gallon conversion exact?
Yes. Both hectogram per cubic meter and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.0008345404452 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.