Is a imperial gallon the same as a US equivalent?

UK imperial gallon is 4.546 liters vs US gallon at 3.785 liters. A UK gallon is about 20% larger than a US gallon — always check which system a recipe uses

Why do international measurements differ from US measurements?

The US uses customary units while most countries use metric. Even among metric countries, cup sizes can differ (250ml metric vs 200ml Japanese).

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Imperial Gallon (4546ml) — 1.2 US gallons (vs US gallon = 3785ml) US Conversion

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Imperial Gallon = 4546 ml

US equivalent: 1.2 US gallons (vs US gallon = 3785ml)

Overview

Imperial Gallon = 4546ml = 1.2 US gallons (vs US gallon = 3785ml). UK imperial gallon is 4.546 liters vs US gallon at 3.785 liters. International cooking measurement guide.

Key Details

Imperial Gallon = 4546 ml
US equivalent: 1.2 US gallons (vs US gallon = 3785ml)
UK imperial gallon is 4.546 liters vs US gallon at 3.785 liters
A UK gallon is about 20% larger than a US gallon — always check which system a recipe uses
Always check which measurement system (US, metric, imperial) your recipe uses

Why This Matters

Imperial Gallon appears in international recipes that US cooks may encounter
Measurement systems differ between countries — conversions prevent errors
Online recipes come from all over the world with different standard measures
Baking is especially sensitive to volume measurement differences

How To

1Imperial Gallon = 4546ml (1.2 US gallons (vs US gallon = 3785ml))
2A UK gallon is about 20% larger than a US gallon — always check which system a recipe uses
3Keep a conversion chart handy when cooking from international cookbooks
4When in doubt, use a kitchen scale — grams are universal