Gallon (US) to Liter Converter
Convertisseur de Volume Gratuit, Convertissez Litres, Gallons, Onces Liquides, Tasses et Millilitres
Gallon (US)
- Symbol
- gal
- System
- Metric/Imperial
- Dimension
- Various
Liter
- Symbol
- L
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Gallon (US) | Liter | Liter | Gallon (US) |
|---|---|---|---|
| 1 | 3.78541 | 1 | 0.2641721769 |
| 2 | 7.57082 | 2 | 0.5283443537 |
| 3 | 11.35623 | 3 | 0.7925165306 |
| 5 | 18.92705 | 5 | 1.3208608843 |
| 10 | 37.8541 | 10 | 2.6417217686 |
| 25 | 94.63525 | 25 | 6.6043044214 |
| 50 | 189.2705 | 50 | 13.2086088429 |
| 100 | 378.541 | 100 | 26.4172176858 |
| 500 | 1892.705 | 500 | 132.086088429 |
| 1000 | 3785.41 | 1000 | 264.172176858 |
Conversion Formula
Liter = Gallon (US) × 3.78541
Gallon (US) = Liter × 0.2641721769
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 3.78541.
How to convert Gallon (US) to Liter
Multiply the value in gallon (us) by 3.78541 to get liter. For example, 5 Gallon (US) = 18.92705 Liter. All results in the volume converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to 3.78 too early — keep full precision until the final display. For volume, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Liter in 1 Gallon (US)?
- 1 Gallon (US) = 3.78541 Liter.
- How many Gallon (US) in 1 Liter?
- 1 Liter = 0.2641721769 Gallon (US).
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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