In terms of UK measurement, there are 160 ounces in a gallon. Since a gallon consists of 128 US fluid ounces, you only need to multiply the number by 128 to convert gallons to ounces.ġ.5 gallon x 128 = 192 US fluid ounces UK Fluid Gallon to UK Fluid Ounces With 160 fluid ounces in a gallon, all you need to do is divide the value by 160.Ģ56 fluid ounces / 160 = 1.6 gallons US Fluid Gallon to US Fluid Ounces US Fluid Ounces to US GallonĪfter establishing that there are 128 fluid ounces in a gallon, divide the volume by the conversion ratio to convert fluid ounces to gallons.ġ15 fluid ounces / 128 = 0.90 gallon UK Fluid Ounces to US Gallon Meanwhile, converting gallons to ounces requires multiplying the value by either 128 or 160. To convert ounces to gallons, divide the value by either 128 or 160. There are 128 ounces in a gallon in the US measurement and 160 ounces in the UK metric. What if you need to determine the gallons? How do you convert an ounce to a gallon? When buying bottled water or ordering a drink, the container or cup may come in ounces. This is why the United States mainly uses 128 ounces and 1 gallon to measure, while much of the world measures in 160 ounces or 4.5 liters.The strongest opposition came from manufacturers and industrialists who believed that shifting the metric system would be expensive for changing the measurements in high-end machinery.There are several reasons why America didn't adopt the system. The United States didn't use the metric system when the rest of the world did in the late 19th century.Having a standardized unit of measurement allows people, corporations, or countries to have a common language when communicating, sharing information, or trading. These are among the most commonly used units of measurement, especially in measuring liquids and even dry goods. Ounces and gallons are both part of the US customary units used to measure volume. A Quick History Into the Units of Measurements In the US Customary unit, 1 fluid ounce equates to 29.6 milliliters, whereas the Imperial system equates to 28.4 milliliters. There are 128 fluid ounces in 1 US gallon, whereas there are 160 fluid ounces in 1 Imperial gallon. Each quart is equivalent to 1/8th of a pint or 20 fluid ounces. What Is an Ounce?Īn ounce can measure volume (fluid ounces) or unit of weight (dry ounces). When measuring gallons for beverages, the volume also considers pressure and temperature. The Imperial gallon measures the volume of liquid, yet not the mass. Each quart is equal to 2 pints, which is equivalent to 128 fluid ounces per gallon. What Is a Gallon?Ī gallon refers to the measurement of volume and fluid in the US Customary and British Imperial units. This means you could be drinking more water when using the UK imperial gallon conversion.

The US gallon has a smaller quantity than the UK Imperial gallon.

Fluid ounces per gallon