How many ounces are there in one gallon?

One gallon is equal to 128 ounces. This is based on the standard measurement conversions where 1 gallon is defined as 128 fluid ounces in the U.S. system. Understanding this conversion is crucial for various applications, including mixing pesticides and other chemicals, where precise measurements are essential for safety and efficacy. This knowledge helps ensure that correct dosages are applied in ornamental and turf management to effectively manage pest populations while minimizing risks to the environment and non-target organisms.