Mass concentration.
Grams per Gallon to Grams per Fluid ounce Converter — g/gal to g/fl oz
Convert Gram per Gallon (g/gal) to Gram per Fluid ounce (g/fl oz) using the exact conversion factor (1 gram per gallon = 0.0078125 gram per fluid ounce). See the formula, worked examples, and conversion table.
Grams per Gallon to Grams per Fluid ounce converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Mass concentration.
Result = input x 0.2641720524 / 33.8140227.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Grams per Gallon to Grams per Fluid ounce
Gram per Gallon and Gram per Fluid ounce both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Both are mass concentration units.
Formula
grams per fluid ounce = grams per gallon × 0.0078125
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per gallon equals 0.264172052358 base units, and 1 gram per fluid ounce equals 33.8140227018 base units, so dividing one by the other gives the direct gram per gallon-to-gram per fluid ounce factor of 0.0078125.
Simple example
1 g/gal × 0.0078125 = 0.0078125 g/fl oz
1 gram per gallon = 0.0078125 grams per fluid ounce.
Real-world example
100 g/gal × 0.0078125 = 0.78125 g/fl oz
100 grams per gallon = 0.78125 grams per fluid ounce.
Conversion table
| Gram per Gallon (g/gal) | Gram per Fluid ounce (g/fl oz) |
|---|---|
| 0.001 g/gal | 0.0000078125 g/fl oz |
| 0.01 g/gal | 0.000078125 g/fl oz |
| 0.1 g/gal | 0.00078125 g/fl oz |
| 1 g/gal | 0.0078125 g/fl oz |
| 10 g/gal | 0.078125 g/fl oz |
| 100 g/gal | 0.78125 g/fl oz |
Reverse conversion: Gram per Fluid ounce to Gram per Gallon
0.0078125 g/fl oz × 128 = 1 g/gal
0.0078125 grams per fluid ounce = 1 gram per gallon.
grams per gallon = grams per fluid ounce × 128
For a page dedicated to this direction, see Gram per Fluid ounce to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
Mass concentration.
Understanding the Gram per Fluid ounce (g/fl oz)
Mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per fluid ounce are in 1 gram per gallon?
1 gram per gallon equals 0.0078125 grams per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to gram per fluid ounce?
Multiply the gram per gallon value by 0.0078125. The converter above does this instantly to whatever precision you set.
How do I convert gram per fluid ounce back to gram per gallon?
Use the reverse factor: 1 gram per fluid ounce equals 128 grams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of chemistry.
What is a gram per fluid ounce?
Gram per Fluid ounce (g/fl oz) is a unit of chemistry.
Is the gram per gallon to gram per fluid ounce conversion exact?
Yes. Both gram per gallon and gram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.0078125 used above is exact to as many digits as you choose to display.
What's the difference between mass concentration and molarity?
Mass concentration expresses how much mass of a substance is present per unit volume (for example, grams per liter). Molarity expresses the amount in moles per liter instead, which accounts for the substance's molecular weight. This category converts mass-concentration units.