Mass per volume density.
Gram per Cubic inches to Grains per Fluid ounce Converter — g/in3 to gr/fl oz
Convert Gram per Cubic inch (g/in3) to Grain per Fluid ounce (gr/fl oz) using the exact conversion factor (1 gram per cubic inch = 27.85058422 grain per fluid ounce). See the formula, worked examples, and conversion table.
Gram per Cubic inches 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 61.02374409 / 2.191111814.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gram per Cubic inches to Grains per Fluid ounce
Gram per Cubic inch 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 = gram per cubic inches × 27.8505842151
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic inch equals 61.0237440947 base units, and 1 grain per fluid ounce equals 2.19111181379 base units, so dividing one by the other gives the direct gram per cubic inch-to-grain per fluid ounce factor of 27.8505842151.
Simple example
1 g/in3 × 27.85058422 = 27.85058422 gr/fl oz
1 gram per cubic inch = 27.85058422 grains per fluid ounce.
Real-world example
1,000 g/in3 × 27.85058422 = 27,850.58422 gr/fl oz
1,000 gram per cubic inches = 27,850.58422 grains per fluid ounce.
Conversion table
| Gram per Cubic inch (g/in3) | Grain per Fluid ounce (gr/fl oz) |
|---|---|
| 0.1 g/in3 | 2.785058422 gr/fl oz |
| 1 g/in3 | 27.85058422 gr/fl oz |
| 10 g/in3 | 278.5058422 gr/fl oz |
| 100 g/in3 | 2,785.058422 gr/fl oz |
| 1,000 g/in3 | 27,850.58422 gr/fl oz |
| 10,000 g/in3 | 278,505.8422 gr/fl oz |
Reverse conversion: Grain per Fluid ounce to Gram per Cubic inch
27.85058422 gr/fl oz × 0.03590588952 = 1 g/in3
27.85058422 grains per fluid ounce = 1 gram per cubic inches.
gram per cubic inches = grains per fluid ounce × 0.0359058895238
For a page dedicated to this direction, see Grain per Fluid ounce to Gram per Cubic inch.
Understanding the Gram per Cubic inch (g/in3)
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 cubic inch?
1 gram per cubic inch equals 27.85058422 grains per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic inch to grain per fluid ounce?
Multiply the gram per cubic inch value by 27.85058422. The converter above does this instantly to whatever precision you set.
How do I convert grain per fluid ounce back to gram per cubic inch?
Use the reverse factor: 1 grain per fluid ounce equals 0.0359058895 gram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic inch?
Gram per Cubic inch (g/in3) 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 cubic inch to grain per fluid ounce conversion exact?
Yes. Both gram per cubic inch and grain per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 27.85058422 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.