Mass per volume density.
Stones per Fluid ounce to Grains per Fluid ounce Converter — st/fl oz to gr/fl oz
Convert Stone per Fluid ounce (st/fl oz) to Grain per Fluid ounce (gr/fl oz) using the exact conversion factor (1 stone per fluid ounce = 98,000 grain per fluid ounce). See the formula, worked examples, and conversion table.
Stones per Fluid ounce 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 214728.9578 / 2.191111814.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Fluid ounce to Grains per Fluid ounce
Stone per Fluid ounce 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 = stones per fluid ounce × 98000
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per fluid ounce equals 214728.957752 base units, and 1 grain per fluid ounce equals 2.19111181379 base units, so dividing one by the other gives the direct stone per fluid ounce-to-grain per fluid ounce factor of 98000.
Simple example
1 st/fl oz × 98000 = 98,000 gr/fl oz
1 stone per fluid ounce = 98,000 grains per fluid ounce.
Real-world example
1,000 st/fl oz × 98000 = 98,000,000 gr/fl oz
1,000 stones per fluid ounce = 98,000,000 grains per fluid ounce.
Conversion table
| Stone per Fluid ounce (st/fl oz) | Grain per Fluid ounce (gr/fl oz) |
|---|---|
| 0.1 st/fl oz | 9,800 gr/fl oz |
| 1 st/fl oz | 98,000 gr/fl oz |
| 10 st/fl oz | 980,000 gr/fl oz |
| 100 st/fl oz | 9,800,000 gr/fl oz |
| 1,000 st/fl oz | 98,000,000 gr/fl oz |
| 10,000 st/fl oz | 980,000,000 gr/fl oz |
Reverse conversion: Grain per Fluid ounce to Stone per Fluid ounce
1 gr/fl oz × 0.00001020408163 = 0.0000102041 st/fl oz
1 grain per fluid ounce = 0.0000102041 stones per fluid ounce.
stones per fluid ounce = grains per fluid ounce × 0.0000102040816327
For a page dedicated to this direction, see Grain per Fluid ounce to Stone per Fluid ounce.
Understanding the Stone per Fluid ounce (st/fl oz)
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 stone per fluid ounce?
1 stone per fluid ounce equals 98,000 grains per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert stone per fluid ounce to grain per fluid ounce?
Multiply the stone per fluid ounce value by 98000. The converter above does this instantly to whatever precision you set.
How do I convert grain per fluid ounce back to stone per fluid ounce?
Use the reverse factor: 1 grain per fluid ounce equals 0.0000102041 stones per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per fluid ounce?
Stone per Fluid ounce (st/fl oz) 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 stone per fluid ounce to grain per fluid ounce conversion exact?
Yes. Both stone per fluid ounce and grain per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 98000 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.