Liters to US Gallons Converter
Convert liters (L) to us gallons (gal) using documented conversion factors. Includes interactive calculations, conversion formula, worked steps, and common reference tables.
Live Interactive Calculator
us gallon = liter × 0.264172Conversion Formula
To convert from liters to us gallons, apply the mathematical formula:
Where L represents liters and gal represents us gallons.
Conversion Factor
The base relationship defined under primary measurement standards:
Reference: BIPM SI Brochure / 12th CGPM (1964)
Volume Measurement & Regional Capacity Standards
Volume measures three-dimensional capacity. In the International System of Units (SI), volume is derived from cubic meters (m³), with the liter (L) defined as 1 cubic decimeter (0.001 m³).
Be careful when converting liquid units between US and British measurements:
- 1 US Gallon is legally defined as 231 cubic inches, equal to 3.785411784 liters.
- 1 Imperial Gallon is defined as exactly 4.54609 liters (roughly 20% larger than a US gallon).
- US Fluid Ounce (29.57 mL) is slightly larger than a British Imperial Fluid Ounce (28.41 mL), but 1 US pint has 16 fl oz while 1 UK pint has 20 imperial fl oz.
Unit-Scale clearly labels regional variants so you never confuse US Customary liquid measures with British Imperial measures.
How to Convert Liters to US Gallons
Converting measurements between liters and us gallons follows a structured calculation process:
- Identify the quantity in liters (L) that you wish to convert.
- Multiply the input by the conversion factor ratio
1 L = 0264172 gal.. - The resulting value is the equivalent amount expressed in us gallons (gal).
Common Liters to US Gallons Reference Table
Frequently referenced values calculated using documented measurement conversion factors.
| Liter (L) | US Gallon (gal) | Arithmetic Expression |
|---|---|---|
| 1 L | 0.264172 gal | 1 × 0.264172 |
| 2 L | 0.528344 gal | 2 × 0.264172 |
| 3.785 L | 0.999891 gal | 3.785 × 0.264172 |
| 5 L | 1.32086 gal | 5 × 0.264172 |
| 10 L | 2.641721 gal | 10 × 0.264172 |
| 15 L | 3.962581 gal | 15 × 0.264172 |
| 20 L | 5.283441 gal | 20 × 0.264172 |
| 40 L | 10.566882 gal | 40 × 0.264172 |
| 50 L | 13.208603 gal | 50 × 0.264172 |
| 60 L | 15.850323 gal | 60 × 0.264172 |
| 100 L | 26.417205 gal | 100 × 0.264172 |
Worked Calculation Examples
Practical step-by-step calculations showing how to convert liters to us gallons with exact mathematical equations.
Application context: Exactly 1 US liquid gallon
Application context: Large office water dispenser jug (5.28 gal)
Application context: Typical passenger vehicle fuel tank (15.85 gal)
About the Units
Authoritative technical specifications and historical definitions for both units.
Liter (L)
A metric unit of volume equal to 1 cubic decimeter (0.001 cubic meters or 1,000 cubic centimeters). Recognized internationally for liquid capacity.
US Gallon (gal)
The US liquid gallon is defined legally as exactly 231 cubic inches, which equals 3.785411784 liters. Note: It is smaller than the Imperial gallon (4.546 L).
Need to convert US Gallons back to Liters?
Reverse Formula: liter = us gallon × 3.785412
Related Volume & Capacity Converters
Contextual conversions related to this pair within the measurement graph.