Gallons to Liters Calculator
How many liters are in a given number of gallons? Convert fuel volume between gallons and liters.
Interactive inputs
Live result
30.00
MPG
Change an input to update the diagram.
Answer first
How many liters are in a given number of gallons?
The Gallons to Liters converter helps you translate US fuel volumes into the metric liters used at gas stations worldwide. It is essential when comparing fuel prices internationally, understanding tank capacity for imported vehicles, or converting recipes and industrial measurements that use gallons.
Current calculator output
30.00
MPG
How it works
Gallons to Liters Calculator: inputs, formula, and result
Enter the values that describe your conversion scenario. The interactive result changes as the inputs change, helping you compare fuel efficiency, fuel consumption, fuel cost, or operating impact.
Formula
Liters = Gallons × 3.785412
Worked example
12 US gallons × 3.785412 = 45.42 liters.
Pro tip: UK Imperial gallons are larger than US gallons (1 Imperial gallon = 4.546 liters). Always confirm whether your source uses US or Imperial gallons before converting.
Personalized guidance
What changes the result for Gallons to Liters?
Convert fuel, distance, and efficiency units before planning a trip or comparing vehicles. Traffic, tire pressure, vehicle load, terrain, driving style, weather, fuel price, and the quality of the input data can change the final result.
Estimated result condition
100%
Select factors that match this conversion calculation.
When should you use this calculator?
Use it before a trip, after a fill-up, when comparing vehicles, or when documenting business mileage. Keep the same units and use several measurements when you need an average.
Selected usePlan with Gallons to Liters Calculator
FAQ
FAQs about Gallons to Liters
3 questions
Question 1 of 3 is open
What is the difference between a US gallon and an Imperial gallon?
A US gallon equals 3.785 liters, while an Imperial (UK) gallon equals 4.546 liters. The Imperial gallon is about 20% larger.
How many liters are in a typical US car fuel tank?
Most US sedans have a 45-65 liter (12-17 US gallon) tank. SUVs and trucks typically range from 75-130 liters (20-34 gallons).
Why do some countries price fuel per gallon and others per liter?
The US prices fuel per gallon, while most other countries use price per liter. To compare, divide the US per-gallon price by 3.785 to get a per-liter price.
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