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Unit conversion

US Gallon to Litre Converter

Convert gallons to liters instantly. Free gallons to liters calculator with formula, examples and FAQs.

By MerQPrime Editorial TeamUpdated 2026-06-20Reviewed 2026-06-20Editorial policy

Converted value

3.79

1.00 gallons = 3.79 liters

Introduction

Need to convert gallons to liters? This page gives you an instant calculator, the exact conversion formula, worked examples and answers to common questions. Whether you are studying, travelling, shipping goods or checking specifications, accurate unit conversion saves costly mistakes.

Formula

liters = gallons × 3.78541

Examples

  • 1 gallons = 3.7854 liters
  • 10 gallons = 37.8541 liters
  • 100 gallons = 378.5412 liters

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Frequently asked questions

How do I convert gallons to liters?
Multiply your gallons value by the conversion factor, or use the formula: liters = gallons × 3.78541. Our calculator applies this instantly in your browser.
What is the formula for gallons to liters?
The standard conversion is: liters = gallons × 3.78541. Enter any gallons value above and the calculator returns the equivalent in liters immediately.
How do I convert liters back to gallons?
Reverse the conversion by swapping the units in the calculator, or visit our dedicated liters-to-gallons page for the inverse formula and examples.
Is this gallons to liters converter accurate?
Yes. Conversions use standard international factors and precise floating-point math. Results are suitable for everyday, engineering and travel use.
When would I need a volume conversion like gallons to liters?
Common uses include travel planning, shipping labels, school coursework, recipe scaling and reading international product specs. Bookmark this page for quick gallons to liters lookups.
Is my data sent to a server?
No. The conversion runs locally in your browser on MerQPrime. Values are never uploaded.

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US Gallon to Litre Converter (Instant & Free) | MerQPrime