Mass per volume density.
Grains per Imperial gallon to Slugs per Cup Converter — gr/imp gal to slug/cup
Convert Grain per Imperial gallon (gr/imp gal) to Slug per Cup (slug/cup) using the exact conversion factor (1 grain per imperial gallon = 2.310742e-7 slug per cup). See the formula, worked examples, and conversion table.
Grains per Imperial gallon to Slugs 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 0.01425376752 / 61684.82065.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Imperial gallon to Slugs per Cup
Grain per Imperial gallon and Slug 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
slugs per cup = grains per imperial gallon × 2.310742e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per imperial gallon equals 0.0142537675233 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct grain per imperial gallon-to-slug per cup factor of 2.310742e-7.
Simple example
1 gr/imp gal × 2.310742e-7 = 2.310742e-7 slug/cup
1 grain per imperial gallon = 2.310742e-7 slugs per cup.
Real-world example
1,000 gr/imp gal × 2.310742e-7 = 0.0002310742 slug/cup
1,000 grains per imperial gallon = 0.0002310742 slugs per cup.
Conversion table
| Grain per Imperial gallon (gr/imp gal) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 gr/imp gal | 2.310742e-8 slug/cup |
| 1 gr/imp gal | 2.310742e-7 slug/cup |
| 10 gr/imp gal | 0.0000023107 slug/cup |
| 100 gr/imp gal | 0.0000231074 slug/cup |
| 1,000 gr/imp gal | 0.0002310742 slug/cup |
| 10,000 gr/imp gal | 0.0023107415 slug/cup |
Reverse conversion: Slug per Cup to Grain per Imperial gallon
2.310742e-7 slug/cup × 4327615.176 = 1.000000215 gr/imp gal
2.310742e-7 slugs per cup = 1.000000215 grains per imperial gallon.
grains per imperial gallon = slugs per cup × 4327615.17631
For a page dedicated to this direction, see Slug per Cup to Grain per Imperial gallon.
Understanding the Grain per Imperial gallon (gr/imp gal)
Mass per volume density.
Understanding the Slug per Cup (slug/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per cup are in 1 grain per imperial gallon?
1 grain per imperial gallon equals 2.310742e-7 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert grain per imperial gallon to slug per cup?
Multiply the grain per imperial gallon value by 2.310742e-7. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to grain per imperial gallon?
Use the reverse factor: 1 slug per cup equals 4,327,615.176 grains per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per imperial gallon?
Grain per Imperial gallon (gr/imp gal) is a unit of density.
What is a slug per cup?
Slug per Cup (slug/cup) is a unit of density.
Is the grain per imperial gallon to slug per cup conversion exact?
Yes. Both grain per imperial gallon and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 2.310742e-7 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.