Gallons ↔ Liters Converter
Convert between US gallons and liters instantly
Gallon Type:
Currently using: US Gallon (3.78541 liters)
Enter gallons value to convert to liters
Enter liters value to convert to gallons
Conversion Result
1 gallon = 3.78541 liters
128 US fluid ounces • 3,785.41 milliliters
📚 Gallons ↔ Liters Conversion Details
Gallons to Liters Formula
liters = gallons × 3.78541
To convert gallons to liters, multiply gallons by 3.78541 (US gallon).
Liters to Gallons Formula
gallons = liters ÷ 3.78541
To convert liters to gallons, divide liters by 3.78541 (US gallon).
Different Gallon Types
There are three main gallon measurements:
- US Gallon: 3.78541 liters
- UK Gallon: 4.54609 liters
- US Dry Gallon: 4.40488 liters
Common Uses
- Fuel consumption (MPG to L/100km)
- Liquid container sizes
- Cooking and recipes
- Chemical measurements
📏 How This Converter Works
This is a bidirectional converter that works in real-time:
- Gallons → Liters: When you type in the gallons field, the liters field automatically updates
- Liters → Gallons: When you type in the liters field, the gallons field automatically updates
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
// Conversion Formulas (US Gallon):
liters = gallons × 3.78541
gallons = liters ÷ 3.78541
// Example 1: Type "5" in gallons
liters = 5 × 3.78541 = 18.92706
// Example 2: Type "10" in liters
gallons = 10 ÷ 3.78541 = 2.64172
liters = gallons × 3.78541
gallons = liters ÷ 3.78541
// Example 1: Type "5" in gallons
liters = 5 × 3.78541 = 18.92706
// Example 2: Type "10" in liters
gallons = 10 ÷ 3.78541 = 2.64172
📊 Gallon Types Comparison
| Gallon Type | Liters | Fluid Ounces | Common Use |
|---|---|---|---|
| US Liquid Gallon | 3.78541 L | 128 fl oz | USA, Fuel, Beverages |
| UK (Imperial) Gallon | 4.54609 L | 160 fl oz | UK, Canada, Fuel |
| US Dry Gallon | 4.40488 L | 148.95 fl oz | Agricultural goods |
❓ Frequently Asked Questions
Q: How many liters are in a US gallon?
A: There are exactly 3.785411784 liters in one US gallon.
Q: What's the difference between US and UK gallons?
A: A UK gallon is larger - about 4.54609 liters compared to 3.78541 liters for US gallon.
Q: Do I need to click any button to convert?
A: No! The conversion happens automatically as you type in either field.
Q: How accurate is this converter?
A: This converter provides exact calculations up to 6 decimal places using the standard conversion factor.