Gallons to Liters Converter
Convert US gallons to liters instantly. Bidirectional — type gallons or liters. 1 US gallon = 3.78541 liters. Free, no signup.
1 gal = 3.78541 L
Quick conversions
▶All Volume units & factors
| Unit | Symbol | → mL |
|---|---|---|
| Milliliters | mL | 1 |
| Liters | L | 1000 |
| Cubic Meters | m³ | 1000000 |
| Cubic Centimeters | cm³ | 1 |
| Cubic Feet | ft³ | 28316.8 |
| Cubic Inches | in³ | 16.3871 |
| US Gallons | gal | 3785.41 |
| US Quarts | qt | 946.353 |
| US Pints | pt | 473.176 |
| US Cups | cup | 236.588 |
| Fluid Ounces (US) | fl oz | 29.5735 |
| Tablespoons | tbsp | 14.7868 |
| Teaspoons | tsp | 4.92892 |
| UK Gallons | UK gal | 4546.09 |
US Gallons to Liters Formula
liters = gallons × 3.78541
Where:
Worked Example: Convert 10 Gallons to Liters
A US car fuel tank holds 10 gallons. How many liters is that?
Step 1: Apply the formula
liters = gallons × 3.78541
Step 2: Substitute 10 gallons
liters = 10 × 3.78541 = 37.854 liters
Result: 10 US gallons = 37.85 liters
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Important — Educational Use Only
This calculator is provided for educational and informational purposes only. The results are estimates based on the information you provide and should not be considered financial, legal, or professional advice.
No Warranty: SmartKitNow makes no warranties regarding the accuracy, completeness, or reliability of the calculations. Results may vary based on individual circumstances, market conditions, and other factors.
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Limitation of Liability: SmartKitNow and its affiliates are not liable for any losses, damages, or consequences resulting from the use of this calculator or reliance on its results.
By using this calculator, you acknowledge that you have read and understood this disclaimer, and you agree to use the tool at your own risk. For personalized guidance tailored to your specific situation, please seek advice from a qualified professional in the relevant field.
📋Last updated: October 2026
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