Mass per volume density.
Grains per Fluid ounce to Slugs per Cup Converter — gr/fl oz to slug/cup
Convert Grain per Fluid ounce (gr/fl oz) to Slug per Cup (slug/cup) using the exact conversion factor (1 grain per fluid ounce = 0.0000355211 slug per cup). See the formula, worked examples, and conversion table.
Grains per Fluid ounce 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 2.191111814 / 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 Fluid ounce to Slugs per Cup
Grain per Fluid ounce 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 fluid ounce × 0.0000355210859104
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per fluid ounce equals 2.19111181379 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct grain per fluid ounce-to-slug per cup factor of 0.0000355210859104.
Simple example
1 gr/fl oz × 0.00003552108591 = 0.0000355211 slug/cup
1 grain per fluid ounce = 0.0000355211 slugs per cup.
Real-world example
1,000 gr/fl oz × 0.00003552108591 = 0.0355210859 slug/cup
1,000 grains per fluid ounce = 0.0355210859 slugs per cup.
Conversion table
| Grain per Fluid ounce (gr/fl oz) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 gr/fl oz | 0.0000035521 slug/cup |
| 1 gr/fl oz | 0.0000355211 slug/cup |
| 10 gr/fl oz | 0.0003552109 slug/cup |
| 100 gr/fl oz | 0.0035521086 slug/cup |
| 1,000 gr/fl oz | 0.0355210859 slug/cup |
| 10,000 gr/fl oz | 0.3552108591 slug/cup |
Reverse conversion: Slug per Cup to Grain per Fluid ounce
0.0000355211 slug/cup × 28152.29249 = 1.000000397 gr/fl oz
0.0000355211 slugs per cup = 1.000000397 grains per fluid ounce.
grains per fluid ounce = slugs per cup × 28152.2924869
For a page dedicated to this direction, see Slug per Cup to Grain per Fluid ounce.
Understanding the Grain per Fluid ounce (gr/fl oz)
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 fluid ounce?
1 grain per fluid ounce equals 0.0000355211 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert grain per fluid ounce to slug per cup?
Multiply the grain per fluid ounce value by 0.00003552108591. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to grain per fluid ounce?
Use the reverse factor: 1 slug per cup equals 28,152.29249 grains per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per fluid ounce?
Grain per Fluid ounce (gr/fl oz) 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 fluid ounce to slug per cup conversion exact?
Yes. Both grain per fluid ounce and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.00003552108591 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.