Gallon to Liter Converter - Convert US/Imperial Gallons to Liters

Value

From

Result:

1 gal (US) = 3.78541 L

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How Gallon to Liter Conversion Works

Input Volume

Enter gallon value

Select Type

Choose US or Imperial

Convert

Apply volume formula

L = gal × f

Volume conversion formula

Conversion Formulas

US Gallon to Liter

L = gal × 3.78541

Example: 5 gal = 5 × 3.78541 = 18.927 L

Imperial Gallon to Liter

L = gal × 4.54609

Example: 3 gal = 3 × 4.54609 = 13.638 L

Liter to US Gallon

gal = L ÷ 3.78541

Example: 10 L = 10 ÷ 3.78541 = 2.642 gal

Liter to Imperial Gallon

gal = L ÷ 4.54609

Example: 15 L = 15 ÷ 4.54609 = 3.300 gal

Gallon to Liter Conversion Table

US Gallon	Liter	Imperial Gallon	Liter	Milliliter
1	3.785	1	4.546	3785
2	7.571	2	9.092	7571
3	11.356	3	13.638	11356
4	15.142	4	18.184	15142
5	18.927	5	22.730	18927
6	22.712	6	27.277	22712
7	26.498	7	31.823	26498
8	30.283	8	36.369	30283
9	34.069	9	40.915	34069
10	37.854	10	45.461	37854
15	56.781	15	68.191	56781
20	75.708	20	90.922	75708
25	94.635	25	113.652	94635
30	113.562	30	136.383	113562
50	189.270	50	227.305	189271

Volume Units Progression Chart

1 gal (US)

Liters:3.785

Imp gal:0.833

2 gal (US)

Liters:7.571

Imp gal:1.665

5 gal (US)

Liters:18.927

Imp gal:4.164

10 gal (US)

Liters:37.854

Imp gal:8.327

20 gal (US)

Liters:75.708

Imp gal:16.653

50 gal (US)

Liters:189.271

Imp gal:41.634

Practice Problems

Problem 1:

Convert 8 US gallons to liters

Solution: 8 × 3.78541 = 30.283 L

Problem 2:

Convert 6 Imperial gallons to liters

Solution: 6 × 4.54609 = 27.277 L

Problem 3:

Convert 25 liters to US gallons

Solution: 25 ÷ 3.78541 = 6.604 gal

Problem 4:

Convert 40 liters to Imperial gallons

Solution: 40 ÷ 4.54609 = 8.799 gal

Problem 5:

Convert 12.5 US gallons to milliliters

Solution: 12.5 × 3785.41 = 47,318 mL

Daily Uses of Volume Conversion

Fuel tank capacity calculations for vehicles and equipment

Cooking recipe conversions between metric and imperial measurements

Swimming pool water volume calculations for chemical treatments

Paint and coating quantity estimation for construction projects

Beverage production and packaging volume measurements

Export Options

Quick Reference

📏1 meter

3.28 feet

⚖️1 kilogram

2.2 pounds

🌡️0°C

32°F

🥤1 liter

0.26 gallon

What is Gallon to Liter Conversion?

A gallon to liter converter helps you change volume measurements from gallons to liters easily. This volume converter works with both US gallons and Imperial gallons. The gallon liter calculator gives you exact results for any liquid measurement converter needs.

The US gallon to liter conversion uses a different formula than Imperial gallon to liter conversion. One US gallon equals 3.78541 liters. One Imperial gallon equals 4.54609 liters. This fluid volume converter makes these calculations simple and fast.

Our gal to L conversion tool works for cooking, fuel calculations, and scientific measurements. The liquid measurement converter handles small and large volumes with perfect accuracy.

How to Use the Gallon to Liter Converter

Enter your gallon value in the input box. The gallon to liter converter accepts any number.

Choose between US gallon to liter or Imperial gallon to liter conversion from the dropdown menu.

Select your target unit. The volume converter shows results in liters, milliliters, or other units.

See instant results. The gallon liter calculator updates automatically as you type.

Common Gallon to Liter Examples

US Gallon to Liter Examples

• 1 US gallon = 3.785 liters (common water jug size)
• 5 US gallons = 18.927 liters (small fuel container)
• 10 US gallons = 37.854 liters (medium fuel tank)
• 20 US gallons = 75.708 liters (car fuel tank)
• 50 US gallons = 189.271 liters (large storage tank)

Imperial Gallon to Liter Examples

• 1 Imperial gallon = 4.546 liters (UK standard)
• 3 Imperial gallons = 13.638 liters (small container)
• 8 Imperial gallons = 36.369 liters (medium tank)
• 15 Imperial gallons = 68.191 liters (large container)
• 25 Imperial gallons = 113.652 liters (storage vessel)

Gallon to Liter Conversion Formulas

US Gallon to Liter Formula

Liters = US Gallons × 3.78541

This gallon to liter converter formula works for all US gallon measurements. The US gallon to liter conversion factor is exactly 3.78541178 liters per gallon.

Imperial Gallon to Liter Formula

Liters = Imperial Gallons × 4.54609

The Imperial gallon to liter conversion uses this formula. One Imperial gallon equals exactly 4.54609 liters in this volume converter.

Reverse Conversion Formulas

US Gallons = Liters ÷ 3.78541

Imperial Gallons = Liters ÷ 4.54609

Use these formulas when you need to convert liters back to gallons in your liquid measurement converter.

When to Use Gallon to Liter Conversion

Cooking & Recipes

Convert recipe measurements when cooking with international recipes. The gallon liter calculator helps with large batch cooking and commercial food preparation.

Fuel Calculations

Calculate fuel consumption and tank capacity. The US gallon to liter converter helps with vehicle fuel efficiency and travel planning.

Pool & Spa Maintenance

Measure water volume for chemical treatments. The fluid volume converter ensures proper chemical ratios for pool maintenance.

Industrial Applications

Convert liquid volumes in manufacturing and processing. The volume converter handles large-scale industrial measurements accurately.

Scientific Research

Precise measurements for laboratory work and experiments. The liquid measurement converter provides exact conversions for scientific accuracy.

Home Projects

Calculate paint, cleaning solutions, and other liquid quantities. The gal to L conversion helps with home improvement and maintenance tasks.

Frequently Asked Questions

What is the difference between US gallon and Imperial gallon?

The US gallon equals 3.78541 liters, while the Imperial gallon equals 4.54609 liters. The Imperial gallon is about 20% larger than the US gallon. This gallon to liter converter handles both types accurately.

How accurate is this gallon liter calculator?

Our volume converter uses official conversion factors with high precision. The US gallon to liter and Imperial gallon to liter conversions are accurate to 8 decimal places for professional use.

Can I convert liters back to gallons?

Yes! This fluid volume converter works both ways. Select liters as your input unit and gallons as your output unit. The liquid measurement converter automatically applies the correct formula.

Which countries use gallons vs liters?

The United States uses US gallons for fuel and liquids. The UK and some Commonwealth countries use Imperial gallons. Most other countries use liters as their standard volume measurement.

Is this gal to L conversion tool free to use?

Yes, our gallon to liter converter is completely free. No registration required. Use this volume converter as many times as needed for personal or professional projects.