How to Convert Gallons to Liters
Converting gallons to liters is essential when buying fuel abroad, comparing beverage sizes, or working with international volume measurements.
165.00 gal = 624.5927 L
To convert gallons to liters, multiply by 3.78541. One US gallon equals approximately 3.79 liters.
Step-by-Step
- Start with your value: 165.00 gal
- Multiply by 3.78541
- Result: 624.5927 L
Formula: L = gal × 3.78541
💡 Memory Tip: 1 gal = 3.79 L. A US gas tank of 15 gallons = about 57 liters. A barrel of oil = 42 gallons = 159 liters.
Gallons to Liters Quick Reference
| Gallons (US) | Liters | Common Reference |
|---|---|---|
| 1 | 3.79 | Large milk jug |
| 5 | 18.93 | Gas canister |
| 10 | 37.85 | Water heater tank |
| 42 | 158.99 | One oil barrel |
| 55 | 208.20 | Standard gas tank |
Understanding Gallons and Liters
What is a Gallon?
A gallon (gal) is a unit of volume in the imperial system. The US gallon equals exactly 3.785 liters. It's commonly used for fuel, milk, and other beverages in the United States.
What is a Liter?
A liter (L) is a metric unit of volume. One liter equals exactly 1000 milliliters or approximately 0.264 US gallons. Liters are used worldwide for beverages, fuel, and liquid measurements.
Learn more about liters on Wikipedia →
Key Facts
US fuel is sold by the gallon. Most countries use liters for fuel. A UK gallon (4.546 L) is larger than a US gallon (3.785 L).
Key Conversion Facts
- 1 US gal = 3.785 L
- 1 L = 0.264 US gal
- 1 UK gal = 4.546 L (different!)
- 1 gal = 4 quarts = 8 pints
- 42 gal = 1 oil barrel
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Frequently Asked Questions
165 US gallons equals 624.5927 L. Multiply by 3.78541.
L = gal × 3.78541
For 165 gal: 165 × 3.78541 = 624.5927 L
165 gal = 624,593 mL.
This converter uses US gallons (3.785 L). UK gallons are larger (4.546 L). UK gallons would give 750.09 L.
165 L = 43.59 gal (reverse calculation).