Mass per volume density.
Ounces per Gallon to Drams per Fluid ounce Converter — oz/gal to dr/fl oz
Convert Ounce per Gallon (oz/gal) to Dram per Fluid ounce (dr/fl oz) using the exact conversion factor (1 ounce per gallon = 0.125 dram per fluid ounce). See the formula, worked examples, conversion table, and common uses.
Ounces per Gallon to Drams 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 7.489151707 / 59.91321366.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Gallon to Drams per Fluid ounce
Ounce per Gallon and Dram 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. Ounce per Gallon is most often used for used to express dilution rates on many us pesticide, herbicide, and household cleaning product labels, which commonly specify a number of fluid ounces of concentrate per gallon of water.
Formula
drams per fluid ounce = ounces per gallon × 0.125
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per gallon equals 7.48915170731 base units, and 1 dram per fluid ounce equals 59.9132136584 base units, so dividing one by the other gives the direct ounce per gallon-to-dram per fluid ounce factor of 0.125.
Simple example
1 oz/gal × 0.125 = 0.125 dr/fl oz
1 ounce per gallon = 0.125 drams per fluid ounce.
Real-world example
1,000 oz/gal × 0.125 = 125 dr/fl oz
1,000 ounces per gallon = 125 drams per fluid ounce.
Conversion table
| Ounce per Gallon (oz/gal) | Dram per Fluid ounce (dr/fl oz) |
|---|---|
| 0.1 oz/gal | 0.0125 dr/fl oz |
| 1 oz/gal | 0.125 dr/fl oz |
| 10 oz/gal | 1.25 dr/fl oz |
| 100 oz/gal | 12.5 dr/fl oz |
| 1,000 oz/gal | 125 dr/fl oz |
| 10,000 oz/gal | 1,250 dr/fl oz |
Reverse conversion: Dram per Fluid ounce to Ounce per Gallon
0.125 dr/fl oz × 8 = 1 oz/gal
0.125 drams per fluid ounce = 1 ounce per gallon.
ounces per gallon = drams per fluid ounce × 8
For a page dedicated to this direction, see Dram per Fluid ounce to Ounce per Gallon.
Understanding the Ounce per Gallon
Ounce per Gallon (oz/gal) measures concentration (dilution rate). A US customary way to express how much concentrate is mixed into each gallon of a diluted solution. It is classified as a US customary concentration unit.
Where it's used: United States
Uses of the Ounce per Gallon today
- Used to express dilution rates on many US pesticide, herbicide, and household cleaning product labels, which commonly specify a number of fluid ounces of concentrate per gallon of water
Understanding the Dram per Fluid ounce (dr/fl oz)
Mass per volume density.
Ounce per Gallon — sources
- US product-label dilution conventions (pesticide/herbicide industry guides) — Fluid ounces of concentrate per gallon is a widely used label format for US spray and cleaning product dilution instructions.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per fluid ounce are in 1 ounce per gallon?
1 ounce per gallon equals 0.125 drams per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per gallon to dram per fluid ounce?
Multiply the ounce per gallon value by 0.125. The converter above does this instantly to whatever precision you set.
How do I convert dram per fluid ounce back to ounce per gallon?
Use the reverse factor: 1 dram per fluid ounce equals 8 ounces per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per gallon?
Ounce per Gallon (oz/gal) measures concentration (dilution rate). A US customary way to express how much concentrate is mixed into each gallon of a diluted solution. It is classified as a US customary concentration unit.
What is a dram per fluid ounce?
Dram per Fluid ounce (dr/fl oz) is a unit of density.
Is the ounce per gallon to dram per fluid ounce conversion exact?
Yes. Both ounce per gallon and dram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.125 used above is exact to as many digits as you choose to display.
Where is the ounce per gallon still used today?
United States
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.