Mass per volume density.
Stones per Gallon to Decagrams per Cup Converter — st/gal to dag/cup
Convert Stone per Gallon (st/gal) to Decagram per Cup (dag/cup) using the exact conversion factor (1 stone per gallon = 39.68933237 decagram per cup). See the formula, worked examples, and conversion table.
Stones per Gallon to Decagrams 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 1677.569982 / 42.26752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Gallon to Decagrams per Cup
Stone per Gallon and Decagram 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
decagrams per cup = stones per gallon × 39.689332375
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per gallon equals 1677.56998244 base units, and 1 decagram per cup equals 42.2675283773 base units, so dividing one by the other gives the direct stone per gallon-to-decagram per cup factor of 39.689332375.
Simple example
1 st/gal × 39.68933237 = 39.68933237 dag/cup
1 stone per gallon = 39.68933237 decagrams per cup.
Real-world example
1,000 st/gal × 39.68933237 = 39,689.33237 dag/cup
1,000 stones per gallon = 39,689.33237 decagrams per cup.
Conversion table
| Stone per Gallon (st/gal) | Decagram per Cup (dag/cup) |
|---|---|
| 0.1 st/gal | 3.968933237 dag/cup |
| 1 st/gal | 39.68933237 dag/cup |
| 10 st/gal | 396.8933238 dag/cup |
| 100 st/gal | 3,968.933237 dag/cup |
| 1,000 st/gal | 39,689.33237 dag/cup |
| 10,000 st/gal | 396,893.3237 dag/cup |
Reverse conversion: Decagram per Cup to Stone per Gallon
39.68933237 dag/cup × 0.02519568711 = 0.9999999999 st/gal
39.68933237 decagrams per cup = 0.9999999999 stones per gallon.
stones per gallon = decagrams per cup × 0.0251956871068
For a page dedicated to this direction, see Decagram per Cup to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Understanding the Decagram per Cup (dag/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decagrams per cup are in 1 stone per gallon?
1 stone per gallon equals 39.68933237 decagrams per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to decagram per cup?
Multiply the stone per gallon value by 39.68933237. The converter above does this instantly to whatever precision you set.
How do I convert decagram per cup back to stone per gallon?
Use the reverse factor: 1 decagram per cup equals 0.0251956871 stones per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
What is a decagram per cup?
Decagram per Cup (dag/cup) is a unit of density.
Is the stone per gallon to decagram per cup conversion exact?
Yes. Both stone per gallon and decagram per cup are defined by fixed standards rather than physical artifacts, so the factor of 39.68933237 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.