Mass per volume density.
Grams per Cup to Grains per Fluid ounce Converter — g/cup to gr/fl oz
Convert Gram per Cup (g/cup) to Grain per Fluid ounce (gr/fl oz) using the exact conversion factor (1 gram per cup = 1.929044794 grain per fluid ounce). See the formula, worked examples, and conversion table.
Grams per Cup to Grains per Fluid ounce 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 / 2.191111814.
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 Grains per Fluid ounce
Gram per Cup and Grain per Fluid ounce 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
grains per fluid ounce = grams per cup × 1.92904479412
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 grain per fluid ounce equals 2.19111181379 base units, so dividing one by the other gives the direct gram per cup-to-grain per fluid ounce factor of 1.92904479412.
Simple example
1 g/cup × 1.929044794 = 1.929044794 gr/fl oz
1 gram per cup = 1.929044794 grains per fluid ounce.
Real-world example
1,000 g/cup × 1.929044794 = 1,929.044794 gr/fl oz
1,000 grams per cup = 1,929.044794 grains per fluid ounce.
Conversion table
| Gram per Cup (g/cup) | Grain per Fluid ounce (gr/fl oz) |
|---|---|
| 0.1 g/cup | 0.1929044794 gr/fl oz |
| 1 g/cup | 1.929044794 gr/fl oz |
| 10 g/cup | 19.29044794 gr/fl oz |
| 100 g/cup | 192.9044794 gr/fl oz |
| 1,000 g/cup | 1,929.044794 gr/fl oz |
| 10,000 g/cup | 19,290.44794 gr/fl oz |
Reverse conversion: Grain per Fluid ounce to Gram per Cup
1.929044794 gr/fl oz × 0.51839128 = 0.9999999999 g/cup
1.929044794 grains per fluid ounce = 0.9999999999 grams per cup.
grams per cup = grains per fluid ounce × 0.51839128
For a page dedicated to this direction, see Grain per Fluid ounce to Gram per Cup.
Understanding the Gram per Cup (g/cup)
Mass per volume density.
Understanding the Grain per Fluid ounce (gr/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per fluid ounce are in 1 gram per cup?
1 gram per cup equals 1.929044794 grains per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to grain per fluid ounce?
Multiply the gram per cup value by 1.929044794. The converter above does this instantly to whatever precision you set.
How do I convert grain per fluid ounce back to gram per cup?
Use the reverse factor: 1 grain per fluid ounce equals 0.51839128 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 grain per fluid ounce?
Grain per Fluid ounce (gr/fl oz) is a unit of density.
Is the gram per cup to grain per fluid ounce conversion exact?
Yes. Both gram per cup and grain per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 1.929044794 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.