Mass per volume density.
Grains per Pint to Micrograms per Fluid ounce Converter — gr/pt to ug/fl oz
Convert Grain per Pint (gr/pt) to Microgram per Fluid ounce (ug/fl oz) using the exact conversion factor (1 grain per pint = 4,049.931875 microgram per fluid ounce). See the formula, worked examples, and conversion table.
Grains per Pint to Micrograms 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 0.1369444884 / 3.38140227e-5.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Pint to Micrograms per Fluid ounce
Grain per Pint and Microgram 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
micrograms per fluid ounce = grains per pint × 4049.931875
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per pint equals 0.136944488362 base units, and 1 microgram per fluid ounce equals 0.0000338140227018 base units, so dividing one by the other gives the direct grain per pint-to-microgram per fluid ounce factor of 4049.931875.
Simple example
1 gr/pt × 4049.931875 = 4,049.931875 ug/fl oz
1 grain per pint = 4,049.931875 micrograms per fluid ounce.
Real-world example
1,000 gr/pt × 4049.931875 = 4,049,931.875 ug/fl oz
1,000 grains per pint = 4,049,931.875 micrograms per fluid ounce.
Conversion table
| Grain per Pint (gr/pt) | Microgram per Fluid ounce (ug/fl oz) |
|---|---|
| 0.1 gr/pt | 404.9931875 ug/fl oz |
| 1 gr/pt | 4,049.931875 ug/fl oz |
| 10 gr/pt | 40,499.31875 ug/fl oz |
| 100 gr/pt | 404,993.1875 ug/fl oz |
| 1,000 gr/pt | 4,049,931.875 ug/fl oz |
| 10,000 gr/pt | 40,499,318.75 ug/fl oz |
Reverse conversion: Microgram per Fluid ounce to Grain per Pint
1 ug/fl oz × 0.0002469177336 = 0.0002469177 gr/pt
1 microgram per fluid ounce = 0.0002469177 grains per pint.
grains per pint = micrograms per fluid ounce × 0.000246917733647
For a page dedicated to this direction, see Microgram per Fluid ounce to Grain per Pint.
Understanding the Grain per Pint (gr/pt)
Mass per volume density.
Understanding the Microgram per Fluid ounce (ug/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms per fluid ounce are in 1 grain per pint?
1 grain per pint equals 4,049.931875 micrograms per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert grain per pint to microgram per fluid ounce?
Multiply the grain per pint value by 4049.931875. The converter above does this instantly to whatever precision you set.
How do I convert microgram per fluid ounce back to grain per pint?
Use the reverse factor: 1 microgram per fluid ounce equals 0.0002469177 grains per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per pint?
Grain per Pint (gr/pt) is a unit of density.
What is a microgram per fluid ounce?
Microgram per Fluid ounce (ug/fl oz) is a unit of density.
Is the grain per pint to microgram per fluid ounce conversion exact?
Yes. Both grain per pint and microgram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 4049.931875 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.