Mass per volume density.
Grams per Gallon to Kilograms per Cup Converter — g/gal to kg/cup
Convert Gram per Gallon (g/gal) to Kilogram per Cup (kg/cup) using the exact conversion factor (1 gram per gallon = 0.0000625 kilogram per cup). See the formula, worked examples, and conversion table.
Grams per Gallon to Kilograms per Cup 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 0.2641720524 / 4226.752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Gallon to Kilograms per Cup
Gram per Gallon and Kilogram per Cup 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 cup = grams per gallon × 0.0000625
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per gallon equals 0.264172052358 base units, and 1 kilogram per cup equals 4226.75283773 base units, so dividing one by the other gives the direct gram per gallon-to-kilogram per cup factor of 0.0000625.
Simple example
1 g/gal × 0.0000625 = 0.0000625 kg/cup
1 gram per gallon = 0.0000625 kilograms per cup.
Real-world example
1,000 g/gal × 0.0000625 = 0.0625 kg/cup
1,000 grams per gallon = 0.0625 kilograms per cup.
Conversion table
| Gram per Gallon (g/gal) | Kilogram per Cup (kg/cup) |
|---|---|
| 0.1 g/gal | 0.00000625 kg/cup |
| 1 g/gal | 0.0000625 kg/cup |
| 10 g/gal | 0.000625 kg/cup |
| 100 g/gal | 0.00625 kg/cup |
| 1,000 g/gal | 0.0625 kg/cup |
| 10,000 g/gal | 0.625 kg/cup |
Reverse conversion: Kilogram per Cup to Gram per Gallon
0.0000625 kg/cup × 16000 = 1 g/gal
0.0000625 kilograms per cup = 1 gram per gallon.
grams per gallon = kilograms per cup × 16000
For a page dedicated to this direction, see Kilogram per Cup to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
Mass per volume density.
Understanding the Kilogram per Cup (kg/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cup are in 1 gram per gallon?
1 gram per gallon equals 0.0000625 kilograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to kilogram per cup?
Multiply the gram per gallon value by 0.0000625. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cup back to gram per gallon?
Use the reverse factor: 1 kilogram per cup equals 16,000 grams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of density.
What is a kilogram per cup?
Kilogram per Cup (kg/cup) is a unit of density.
Is the gram per gallon to kilogram per cup conversion exact?
Yes. Both gram per gallon and kilogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.0000625 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.