How to Convert Liters to Gallons
Converting liters to gallons is essential when comparing fuel efficiency, beverage containers, or liquid volumes between metric and US/imperial systems.
15.00 L = 3.9626 gal
To convert liters to gallons (US), multiply by 0.264172. One liter equals approximately 0.264 gallons.
Step-by-Step
- Start with your value: 15.00 L
- Multiply by 0.264172
- Result: 3.9626 gal
Formula: gal = L × 0.264172
💡 Memory Tip: 1 L ≈ 0.26 gal. A 2-liter bottle = about 0.53 gallons. A US gallon of milk is about 3.79 liters.
Liters to Gallons Quick Reference
| Liters | Gallons (US) | Common Reference |
|---|---|---|
| 1 | 0.26 | Small water bottle |
| 3.79 | 1 | One US gallon exactly |
| 5 | 1.32 | Large jug |
| 10 | 2.64 | 2-liter bottle × 1.3 |
| 20 | 5.28 | Gas canister |
Understanding Liters and Gallons
What is a Liter?
A liter (L) is a metric unit of volume. One liter equals exactly 1000 milliliters, 4.227 cups, or approximately 0.264 US gallons. Liters are used worldwide for beverages, fuel, and liquid measurements.
What is a Gallon?
A gallon (gal) is a unit of volume in the imperial system. The US gallon equals exactly 3.785 liters, while the UK gallon equals 4.546 liters. US gallons are used for fuel, milk, and other liquids.
Learn more about gallons on Wikipedia →
Key Facts
US gas prices are per gallon (not liter). UK uses imperial gallons (4.546 L). Most countries sell fuel in liters.
Key Conversion Facts
- 1 L = 0.264172 US gal
- 1 US gal = 3.785 L
- 1 L = 1000 mL
- 1 UK gal = 4.546 L (different!)
- 1 L = 4.227 cups
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Frequently Asked Questions
15 L equals 3.9626 US gallons. Multiply by 0.264172.
gal = L × 0.264172
For 15 L: 15 × 0.264172 = 3.9626 gal
15 L = 15,000 mL (1 L = 1000 mL).
This converter uses US gallons (3.785 L). UK gallons are larger (4.546 L). If you need UK gallons, multiply by 0.219969 instead.
15 L = 63.4 cups (1 L = 4.227 cups).