Liters to Gallons Converter

The Liters to Gallons Converter turns any volume in liters into US gallons and UK (Imperial) gallons at the same time — so you never have to guess which gallon a website means. It is built for real jobs like sizing a fuel tank, comparing car fuel economy across countries, or scaling a recipe, and it also runs in reverse to convert gallons back to liters.

How Many Gallons Are in a Liter?

One liter equals about 0.264172 US gallons or about 0.219969 UK (Imperial) gallons. The two answers differ because the US and UK define the gallon differently — a fact that trips up shoppers, travelers, and students alike. This converter always shows both so the ambiguity disappears.

Liters to Gallons Formula

Converting liters to gallons is a single division — you just pick the right divisor for the gallon you want.

To go the other way, multiply instead: Liters = US gallons × 3.785411784, or Liters = UK gallons × 4.54609.

US Gallon vs UK (Imperial) Gallon

A US liquid gallon is defined as exactly 3.785411784 liters (231 cubic inches). A UK or Imperial gallon is exactly 4.54609 liters. That makes the Imperial gallon roughly 20% larger than the US gallon. Because the container is bigger, the same amount of liquid fills fewer Imperial gallons — which is why converting 45 liters gives about 11.89 US gallons but only about 9.90 UK gallons.

Liters to Gallons Conversion Chart

Which Gallon Should I Use?

• Fuel in the United States: always the US gallon. American miles-per-gallon (MPG) figures use US gallons.
• Fuel in the UK and Ireland: sold in liters today, but older MPG figures and habits often still use the Imperial gallon, so UK MPG numbers look higher than US ones for the same car.
• Cooking and recipes: US recipes use US gallons, quarts, and cups; UK and Commonwealth recipes may use Imperial measures. Check the source country.
• Science and international trade: use liters (the SI unit) whenever possible to avoid confusion entirely.

Typical Fuel Tank Sizes

• Motor scooter: ~6 L (about 1.6 US gal / 1.3 UK gal)
• Motorcycle: ~15 L (about 4.0 US gal / 3.3 UK gal)
• Compact car: ~45 L (about 11.9 US gal / 9.9 UK gal)
• Mid-size SUV: ~70 L (about 18.5 US gal / 15.4 UK gal)
• Full-size pickup: ~100 L (about 26.4 US gal / 22.0 UK gal)

How to Use This Calculator

1. Choose the direction: keep Liters to Gallons selected, or switch to Gallons to Liters for the reverse conversion.
2. Enter your volume: type the number of liters, or click a fuel-tank preset to fill it in instantly.
3. Click Convert: the tool computes the result immediately.
4. Read both results: see your US and UK gallons, watch the animated tank fill to that volume, compare US vs UK gallon sizes, and review the step-by-step formula.

Frequently Asked Questions

How many gallons is a liter?

One liter equals about 0.264172 US gallons or about 0.219969 UK (Imperial) gallons. To convert liters to US gallons, divide the number of liters by 3.785411784. To convert to UK gallons, divide by 4.54609.

What is the difference between a US gallon and a UK gallon?

A US liquid gallon is 3.785411784 liters, while a UK or Imperial gallon is 4.54609 liters. The UK gallon is about 20 percent larger, so the same volume of liquid always converts to fewer UK gallons than US gallons.

How do I convert liters to gallons?

Divide the number of liters by 3.785411784 to get US gallons, or by 4.54609 to get UK gallons. For example, 45 liters is 45 ÷ 3.785411784 ≈ 11.89 US gallons, or 45 ÷ 4.54609 ≈ 9.90 UK gallons.

How many liters are in a gallon?

There are 3.785411784 liters in one US gallon and 4.54609 liters in one UK (Imperial) gallon. To go from gallons back to liters, multiply the number of gallons by the matching factor.

Which gallon is used for fuel?

The United States uses the US gallon for fuel. The UK now sells fuel in liters, but older figures and some Commonwealth countries still reference the Imperial gallon. When comparing fuel economy or tank sizes across regions, make sure you are using the same gallon definition.

How many liters is a typical car fuel tank?

A compact car tank holds roughly 45 to 50 liters (about 12 to 13 US gallons), an SUV holds about 70 to 80 liters (about 18 to 21 US gallons), and a large pickup truck can hold 100 liters or more (about 26 US gallons).

Additional Resources

• Gallon - Wikipedia
• Litre - Wikipedia