Gallons to Liters Converter
Convert volume between Gallons to Liters instantly. It’s handy when a recipe, aquarium capacity, fuel can, or international product spec lists one unit and you need the other for purchasing, mixing, or compliance.
The Gallons to Liters Converter lets you type a value in either unit and get a precise counterpart you can trust for orders and measurements. The goal is clean, error-free math so you size containers correctly, standardize documentation across regions, and keep projects moving without manual conversions.
Convert gallons (US & Imperial) to liters (L) and back — live, accurate, and complete with quick tables.
Enter a value
Gallons to Liters Results
Quick conversion tables
| Gallons | Liters |
|---|---|
| 0.25 | 0.95 |
| 0.5 | 1.89 |
| 1 | 3.79 |
| 2 | 7.57 |
| 5 | 18.93 |
| 10 | 37.85 |
| 20 | 75.71 |
| Liters | Gallons |
|---|---|
| 1 | 0.26 |
| 2 | 0.53 |
| 5 | 1.32 |
| 10 | 2.64 |
| 20 | 5.28 |
| 50 | 13.21 |
| 100 | 26.42 |
Results interpretation
- Pick the right gallon: US and Imperial gallons differ by ~20%.
- Rounding is for display: change decimals to match your reporting needs.
- Context matters: fuel, beverages, and building products may specify a standard—match it.
How gallon–liter conversion works
Formulas, steps, assumptions
US: L = gal × 3.785411784; gal = L ÷ 3.785411784.
Imperial: L = gal × 4.54609; gal = L ÷ 4.54609.
Steps: Choose standard → enter gallons or liters → adjust rounding → copy link with inputs.
Assumptions: Exact definitions; results rounded only for display.
Limitations: Dry gallons and other legacy units are out of scope here.
Use cases & examples
Example 1 (US): 5 gal → 18.9271 L (2 decimals → 18.93 L).
Example 2 (Imperial): 10 L → 2.1997 gal (2 decimals → 2.20 gal).
Example 3: Switching standards changes only the constant; the workflow stays the same.
Gallons to liters — FAQ
What’s the difference between US and Imperial gallons?
The US gallon is 3.785411784 liters, while the Imperial gallon is 4.54609 liters. Imperial is larger by about 20%.
Can I convert liters back to gallons?
Yes—enter liters and we’ll convert to gallons using your selected standard.
Which standard should I use?
Use the standard required by your context: many countries use liters; the US uses US gallons; the UK uses Imperial for some legacy contexts.
Why do results change when I switch standards?
You’re changing the definition of a gallon, so the liters-per-gallon constant changes.
Is rounding applied to the math?
No. We compute with full precision and apply your rounding preference only to the displayed result.
Do you support dry gallons?
Not here. This converter covers US liquid and Imperial gallons, which are the common standards for volume of liquids.
Gallons vs. liters: standards, pitfalls, and best practices
We convert between gallons and liters using the exact constants for US and Imperial definitions, making the result dependable for shopping, construction, and lab work. Enter a value on either side, set the standard, and review a quick table for common sizes.
Choosing the correct gallon standard
The Imperial gallon is larger than the US gallon. Specifications, labels, or local norms usually determine which one applies. When in doubt, confirm the standard by region or industry.
Rounding for communication vs. calculation
Keep full-precision values for math and round only for display. That’s why the rounding control affects the output text but not the internal computation.
Common contexts
Consumers encounter gallons in fuel and beverages, while engineers and scientists often work in liters. This converter adapts to both, with a copy-link that preserves inputs.