Table Of Contents
Gallons to liters Conversion
1 gallons (gal) is equal to 3.785411784 liters (liter).
1 gal = 3.785411784 liter
or
1 liter = 0.2641720524 gal
Formula
To convert a volume from gallons (gal) to liters (liter), multiply the volume in gallons by 3.785411784
v(liter) = v(gal) × 3.785411784
Examples:
Convert 20 gallons to liters:
v(liter) = 20gal × 3.785411784 = 75.70823568 liter
Conversion table
| Gallons (gal) | Liters (liter) |
|---|---|
| 1 gal | 3.785411784 liter |
| 2 gal | 7.570823568 liter |
| 3 gal | 11.356235352 liter |
| 5 gal | 18.92705892 liter |
| 10 gal | 37.85411784 liter |
| 15 gal | 56.78117676 liter |
| 20 gal | 75.70823568 liter |
| 25 gal | 94.6352946 liter |
| 50 gal | 189.2705892 liter |
| 100 gal | 378.5411784 liter |
| 250 gal | 946.352946 liter |
| 500 gal | 1892.705892 liter |
| 1000 gal | 3785.411784 liter |
| Liters (liter) | Gallons (gal) |
|---|---|
| 1 liter | 0.264172052 gal |
| 2 liter | 0.528344105 gal |
| 3 liter | 0.792516157 gal |
| 5 liter | 1.320860262 gal |
| 10 liter | 2.641720524 gal |
| 15 liter | 3.962580785 gal |
| 20 liter | 5.283441047 gal |
| 25 liter | 6.604301309 gal |
| 50 liter | 13.208602618 gal |
| 100 liter | 26.417205236 gal |
| 250 liter | 66.04301309 gal |
| 500 liter | 132.086026179 gal |
| 1000 liter | 264.172052358 gal |
Frequently asked questions
How do I convert gallons to liters?
Multiply the value in gallons by 3.785411784 to get the result in liters. For example, 5 gal × 3.785411784 = 18.92705892 liter.
How many liters are in 1 gallons?
1 gallons (gal) is equal to 3.785411784 liters (liter).
How do I convert liters back to gallons?
Use the inverse operation: divide the value in liters by 3.785411784 to get the result in gallons.
How accurate is the gallons to liters conversion?
The converter multiplies by the conversion factor 3.785411784 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- NIST SP 811 (2008 ed.) — Guide for the Use of the International System of Units (SI)
- The Unified Code for Units of Measure (UCUM), Version 2.2 (2024-06-17)
