Mass per volume density.
Pounds per Cup to Kilograms per Gallon Converter — lb/cup to kg/gal
Convert Pound per Cup (lb/cup) to Kilogram per Gallon (kg/gal) using the exact conversion factor (1 pound per cup = 7.25747792 kilogram per gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Cup to Kilograms 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 1917.222837 / 264.1720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Kilograms per Gallon
Pound per Cup and Kilogram 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
kilograms per gallon = pounds per cup × 7.25747792
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 kilogram per gallon equals 264.172052358 base units, so dividing one by the other gives the direct pound per cup-to-kilogram per gallon factor of 7.25747792.
Simple example
1 lb/cup × 7.25747792 = 7.25747792 kg/gal
1 pound per cup = 7.25747792 kilograms per gallon.
Real-world example
1,000 lb/cup × 7.25747792 = 7,257.47792 kg/gal
1,000 pounds per cup = 7,257.47792 kilograms per gallon.
Conversion table
| Pound per Cup (lb/cup) | Kilogram per Gallon (kg/gal) |
|---|---|
| 0.1 lb/cup | 0.725747792 kg/gal |
| 1 lb/cup | 7.25747792 kg/gal |
| 10 lb/cup | 72.5747792 kg/gal |
| 100 lb/cup | 725.747792 kg/gal |
| 1,000 lb/cup | 7,257.47792 kg/gal |
| 10,000 lb/cup | 72,574.7792 kg/gal |
Reverse conversion: Kilogram per Gallon to Pound per Cup
7.25747792 kg/gal × 0.1377889139 = 1 lb/cup
7.25747792 kilograms per gallon = 1 pound per cup.
pounds per cup = kilograms per gallon × 0.137788913866
For a page dedicated to this direction, see Kilogram per Gallon to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Kilogram per Gallon
Kilogram per Gallon (kg/gal) measures density. A mathematically valid way to express liquid density in kilograms per US gallon. It is classified as a mixed metric/US customary density unit.
Uses of the Kilogram per Gallon today
- Can be used to express liquid density such as fuel or industrial liquids in kilograms per gallon — in practice, kilograms per liter (metric) and pounds per gallon (US customary) are the specific pairings more commonly seen in fuel and liquid-density references
Kilogram per Gallon — sources
- Fuel and petroleum liquid-density references — Liquid density figures for fuels are typically reported in kg/L, kg/m³, or lb/gal rather than kg/gal.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per gallon are in 1 pound per cup?
1 pound per cup equals 7.25747792 kilograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to kilogram per gallon?
Multiply the pound per cup value by 7.25747792. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per gallon back to pound per cup?
Use the reverse factor: 1 kilogram per gallon equals 0.1377889139 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a kilogram per gallon?
Kilogram per Gallon (kg/gal) measures density. A mathematically valid way to express liquid density in kilograms per US gallon. It is classified as a mixed metric/US customary density unit.
Is the pound per cup to kilogram per gallon conversion exact?
Yes. Both pound per cup and kilogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 7.25747792 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.