Mass per volume density.
Grains per Quart to Slugs per Fluid ounce Converter — gr/qt to slug/fl oz
Convert Grain per Quart (gr/qt) to Slug per Fluid ounce (slug/fl oz) using the exact conversion factor (1 grain per quart = 1.387542e-7 slug per fluid ounce). See the formula, worked examples, and conversion table.
Grains per Quart to Slugs 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 0.06847224418 / 493478.5652.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Quart to Slugs per Fluid ounce
Grain per Quart and Slug 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
slugs per fluid ounce = grains per quart × 1.387542e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per quart equals 0.0684722441811 base units, and 1 slug per fluid ounce equals 493478.565227 base units, so dividing one by the other gives the direct grain per quart-to-slug per fluid ounce factor of 1.387542e-7.
Simple example
1 gr/qt × 1.387542e-7 = 1.387542e-7 slug/fl oz
1 grain per quart = 1.387542e-7 slugs per fluid ounce.
Real-world example
1,000 gr/qt × 1.387542e-7 = 0.0001387542 slug/fl oz
1,000 grains per quart = 0.0001387542 slugs per fluid ounce.
Conversion table
| Grain per Quart (gr/qt) | Slug per Fluid ounce (slug/fl oz) |
|---|---|
| 0.1 gr/qt | 1.387542e-8 slug/fl oz |
| 1 gr/qt | 1.387542e-7 slug/fl oz |
| 10 gr/qt | 0.0000013875 slug/fl oz |
| 100 gr/qt | 0.0000138754 slug/fl oz |
| 1,000 gr/qt | 0.0001387542 slug/fl oz |
| 10,000 gr/qt | 0.0013875424 slug/fl oz |
Reverse conversion: Slug per Fluid ounce to Grain per Quart
1.387542e-7 slug/fl oz × 7206986.877 = 0.9999996985 gr/qt
1.387542e-7 slugs per fluid ounce = 0.9999996985 grains per quart.
grains per quart = slugs per fluid ounce × 7206986.87664
For a page dedicated to this direction, see Slug per Fluid ounce to Grain per Quart.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Understanding the Slug per Fluid ounce (slug/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per fluid ounce are in 1 grain per quart?
1 grain per quart equals 1.387542e-7 slugs per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert grain per quart to slug per fluid ounce?
Multiply the grain per quart value by 1.387542e-7. The converter above does this instantly to whatever precision you set.
How do I convert slug per fluid ounce back to grain per quart?
Use the reverse factor: 1 slug per fluid ounce equals 7,206,986.877 grains per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
What is a slug per fluid ounce?
Slug per Fluid ounce (slug/fl oz) is a unit of density.
Is the grain per quart to slug per fluid ounce conversion exact?
Yes. Both grain per quart and slug per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 1.387542e-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.