US Gallons to Liters
Snapshot
1 US Gallon equals 3.785412 Liters. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.
- Reference basis: This result uses fixed marine-capacity definitions for tanks, holds, and onboard volume checks.
- Example: For 2 US Gallon, the result equals 7.570824 Liters.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Converter Calculator
3.785412 Liters (L)
SwitchExplanation
Formula: Liters = US Gallon × 3.785412. Why: tank and hold-capacity units are tied to fixed volume definitions, so the route normalizes through one volumetric basis before applying the target unit.
US Gallons (US gal): a US customary liquid-volume unit used for fuel, tanks, and onboard capacity references in US-based contexts.
Liters (L): a metric liquid-volume unit used for smaller tank, fuel, and onboard capacity references.
This route is useful when translating tank, hold, and onboard liquid-capacity values across metric and gallon-based systems for storage, fueling, and vessel operations.
This conversion is purely multiplicative because both units reduce through one fixed marine reference basis for the active family, with no offset.
Common Conversion Values
| US Gallon (US gal) | Liters (L) |
|---|---|
| 1 | 3.785412 |
| 2 | 7.570824 |
| 5 | 18.927059 |
| 10 | 37.854118 |
| 20 | 75.708236 |
| 50 | 189.270589 |
| 100 | 378.541178 |
Frequently Asked Questions
How many liters are in 1 us gallon?
This route uses a fixed factor, so 1 us gallon equals 3.785411784 liters.
What is the reverse conversion for US Gallons to Liters?
Use the Liters to US Gallons page to reverse the same tank or hold-capacity relationship for onboard volume checks.
Can I use decimal us gallons values?
Yes. Decimal us gallons values are supported for fueling, storage, and onboard capacity checks.