Mass per volume density.
Grams per Cup to Stones per Gallon Converter — g/cup to st/gal
Convert Gram per Cup (g/cup) to Stone per Gallon (st/gal) using the exact conversion factor (1 gram per cup = 0.0025195687 stone per gallon). See the formula, worked examples, and conversion table.
Grams per Cup to Stones 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 4.226752838 / 1677.569982.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cup to Stones per Gallon
Gram per Cup and Stone 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
stones per gallon = grams per cup × 0.00251956871068
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cup equals 4.22675283773 base units, and 1 stone per gallon equals 1677.56998244 base units, so dividing one by the other gives the direct gram per cup-to-stone per gallon factor of 0.00251956871068.
Simple example
1 g/cup × 0.002519568711 = 0.0025195687 st/gal
1 gram per cup = 0.0025195687 stones per gallon.
Real-world example
1,000 g/cup × 0.002519568711 = 2.519568711 st/gal
1,000 grams per cup = 2.519568711 stones per gallon.
Conversion table
| Gram per Cup (g/cup) | Stone per Gallon (st/gal) |
|---|---|
| 0.1 g/cup | 0.0002519569 st/gal |
| 1 g/cup | 0.0025195687 st/gal |
| 10 g/cup | 0.0251956871 st/gal |
| 100 g/cup | 0.2519568711 st/gal |
| 1,000 g/cup | 2.519568711 st/gal |
| 10,000 g/cup | 25.19568711 st/gal |
Reverse conversion: Stone per Gallon to Gram per Cup
0.0025195687 st/gal × 396.8933238 = 0.9999999958 g/cup
0.0025195687 stones per gallon = 0.9999999958 grams per cup.
grams per cup = stones per gallon × 396.89332375
For a page dedicated to this direction, see Stone per Gallon to Gram per Cup.
Understanding the Gram per Cup (g/cup)
Mass per volume density.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per gallon are in 1 gram per cup?
1 gram per cup equals 0.0025195687 stones per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to stone per gallon?
Multiply the gram per cup value by 0.002519568711. The converter above does this instantly to whatever precision you set.
How do I convert stone per gallon back to gram per cup?
Use the reverse factor: 1 stone per gallon equals 396.8933238 grams per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cup?
Gram per Cup (g/cup) is a unit of density.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
Is the gram per cup to stone per gallon conversion exact?
Yes. Both gram per cup and stone per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.002519568711 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.