Gallons (UK) to Gallons (US) Converter

A US gallon equals 3.78541 liters, while a UK (Imperial) gallon equals 4.54609 liters. The UK gallon is about 20% larger than the US gallon. This difference originated from different historical definitions and remains important when comparing fuel economy or following recipes from different countries.

To convert milliliters to US cups, divide the milliliter value by 236.588. For example, 250 mL equals approximately 1.06 cups. Note that cup sizes vary internationally, so always specify whether you're using US cups, metric cups (250 mL), or UK cups (284 mL).

Volume measurements are more convenient for liquids because measuring cups and spoons are easier to use than scales for pouring liquids. However, weight is more accurate for precise applications. One liter of water weighs one kilogram, but this varies for other liquids based on density.

One liter equals approximately 4.227 US cups, though this is often rounded to 4.2 cups for practical purposes. Conversely, one US cup equals approximately 237 milliliters. This conversion is essential for adapting recipes between metric and imperial measurements.

Fluid ounces (fl oz) measure volume, while ounces (oz) measure weight. One US fluid ounce equals approximately 29.57 milliliters and is used for liquids. Weight ounces measure mass and vary depending on what you're measuring. Never substitute one for the other in recipes.