Liters to Gallons Converter (US and Imperial)
Convert liters to US gallons and imperial gallons, and gallons back to liters. Exact factors: 1 US gallon = 3.785411784 L, 1 imperial gallon = 4.54609 L.
L to Gal Calculator
This free l to gallon conversion tool converts liters to gallons (a litres to gallons conversion is identical, since litre is just the British spelling of liter) and back. Type an amount, pick units, and get an instant result with show-your-work steps.
Show your work
Step 1: 10 liters = 10 × 1 = 10.0000 liters.
Step 2: 1 US gallon = 3.785411784 liters exactly.
Step 3: 10 ÷ 3.785411784 = 2.6417 US gallons.
All unit equivalents
Liters to Gallons Chart (Quick Table)
Every whole liter from 1 to 20 converted to US gallons and imperial gallons at 4 decimals. Looking up 1 liter to gallons, 5 liters to gallons, 10 liters to gallons, or 20 liters to gallons? Rows 1, 5, 10, and 20 of the chart below have the answers.
| Liters | US gallons | Imperial gallons |
|---|---|---|
| 1 L | 0.2642 | 0.2200 |
| 2 L | 0.5283 | 0.4399 |
| 3 L | 0.7925 | 0.6599 |
| 4 L | 1.0567 | 0.8799 |
| 5 L | 1.3209 | 1.0998 |
| 6 L | 1.5850 | 1.3198 |
| 7 L | 1.8492 | 1.5398 |
| 8 L | 2.1134 | 1.7598 |
| 9 L | 2.3775 | 1.9797 |
| 10 L | 2.6417 | 2.1997 |
| 11 L | 2.9059 | 2.4197 |
| 12 L | 3.1701 | 2.6396 |
| 13 L | 3.4342 | 2.8596 |
| 14 L | 3.6984 | 3.0796 |
| 15 L | 3.9626 | 3.2995 |
| 16 L | 4.2268 | 3.5195 |
| 17 L | 4.4909 | 3.7395 |
| 18 L | 4.7551 | 3.9594 |
| 19 L | 5.0193 | 4.1794 |
| 20 L | 5.2834 | 4.3994 |
Worked Examples
Example 1: Convert 10 liters to US gallons
Formula: gallons = liters ÷ 3.785411784
10 ÷ 3.785411784 = 2.6417205235814842, so 10 liters = 2.6417 US gallons.
Example 2: Convert 5 US gallons to liters
Formula: liters = gallons × 3.785411784
5 × 3.785411784 = 18.92705892, so 5 US gallons = 18.9271 liters.
Example 3: Convert 2 liters to imperial gallons
Formula: imperial gallons = liters ÷ 4.54609
2 ÷ 4.54609 = 0.4399384965981756, so 2 liters = 0.4399 imperial gallons.
Example 4: Convert 250 milliliters to US fluid ounces
Formula: fluid ounces = milliliters ÷ 29.5735295625
250 ÷ 29.5735295625 = 8.453505675460749, so 250 milliliters = 8.4535 US fluid ounces.
Everyday Uses
Car fuel tank
A 50-liter fuel tank holds 13.2086 US gallons (50 ÷ 3.785411784). Handy when a car review quotes range in gallons per tank.
Cooking recipes
One liter of stock is 33.8140 US fluid ounces, just over 4 US cups. British recipes that say litres mean exactly the same as liters.
Aquarium size
A 20-liter nano tank is 5.2834 US gallons (20 ÷ 3.785411784), useful when stocking guides are written in gallons.
US vs imperial check
The same 20 liters is 4.3994 imperial gallons. Remember the US gallon vs imperial gallon gap: 3.785411784 L versus 4.54609 L, so the imperial gallon is about 20 percent larger. Always check which gallon a figure uses.
Scope Note: Which Converter Do You Need?
This page: liters to gallons (volume to volume). Pure volume math with exact factors. If you start from gallons and want liters, quarts, pints, cups, and fluid ounces in one hub, use our gallon converter.
Not this page: kilograms to gallons. A kilogram measures mass, so converting kg to gallons needs the liquid's density (water, oil, and honey all differ). That is a different tool: our kg to gallons calculator.
Frequently Asked Questions
How many gallons are in a liter?
One liter equals 0.2642 US gallons (rounded to 4 decimals; the exact value is 0.2641720523581484). For imperial gallons, one liter equals 0.2200 imperial gallons (exact: 0.2199692482990878).
How many liters are in a gallon?
One US gallon is exactly 3.785411784 liters. One imperial gallon is exactly 4.54609 liters. Most gallon converters on the web use the US gallon, so check which gallon your recipe, fuel figure, or tank specification means.
What is the difference between a US gallon and an imperial gallon?
A US gallon holds 3.785411784 liters and an imperial gallon holds 4.54609 liters, so the imperial gallon is about 20 percent larger. The US gallon comes from the old Queen Anne wine gallon of 231 cubic inches; the imperial gallon was redefined in Britain in 1824 as the volume of 10 pounds of water. Use the US or imperial toggle on this calculator to convert with either one.
What is the liters to gallons formula?
Gallons = liters divided by 3.785411784 for US gallons, or liters divided by 4.54609 for imperial gallons. To go the other way, liters = gallons times 3.785411784 (US) or gallons times 4.54609 (imperial).
How many gallons is 1 liter?
1 liter equals 0.2642 US gallons (1 divided by 3.785411784 = 0.2641720523581484) or 0.2200 imperial gallons.
How many gallons is 5 liters?
5 liters equals 1.3209 US gallons (5 divided by 3.785411784 = 1.3208602617907421).
How many gallons is 10 liters?
10 liters equals 2.6417 US gallons (10 divided by 3.785411784 = 2.6417205235814842).
How many gallons is 20 liters?
20 liters equals 5.2834 US gallons (20 divided by 3.785411784 = 5.2834410471630) or 4.3994 imperial gallons (20 divided by 4.54609 = 4.3993849659818).
How many fluid ounces are in a liter?
One liter equals 33.8140 US fluid ounces (exact: 33.8140227018430), because one US fluid ounce is exactly 29.5735295625 milliliters.
How many milliliters are in a gallon?
One US gallon is exactly 3785.411784 milliliters, and one imperial gallon is exactly 4546.09 milliliters.
Is there a liters to gallons chart?
Yes, the quick table on this page converts 1 to 20 liters into both US and imperial gallons, for example 1 L = 0.2642 US gal, 5 L = 1.3209 US gal, 10 L = 2.6417 US gal, and 20 L = 5.2834 US gal. Change the precision setting to see more or fewer decimals.
Why is the imperial gallon bigger than the US gallon?
Both gallon definitions come from old British wine and ale measures, but the United States kept the 231-cubic-inch wine gallon after independence while Britain redefined the imperial gallon in 1824 as the volume occupied by 10 avoirdupois pounds of water, which is 4.54609 liters.
Is converting liters to kilograms the same as liters to gallons?
No. Liters to gallons is a pure volume conversion that never changes: one liter is always 0.2642 US gallons. Liters to kilograms depends on density, because a kilogram measures mass. For mass conversions use our kg to gallons calculator instead, which converts through density.
Liters or litres, which spelling is correct?
Both are correct. Liter is the American spelling and litre is the British spelling. They are exactly the same unit: 1 liter = 1 litre = 1000 milliliters.
How do I convert gallons to liters?
Multiply gallons by 3.785411784 for US gallons or by 4.54609 for imperial gallons. For example, 5 US gallons times 3.785411784 = 18.9271 liters. Use the direction tabs at the top of the calculator to convert either way.
How many decimals should I use?
For everyday uses such as cooking or fuel estimates, 1 or 2 decimals are enough (for example 2.64 US gallons). For recipes, aquariums, or dosing where small errors add up, use 3 or 4 decimals. The precision buttons on this calculator go from 0 to 10 decimals without changing the underlying exact factor of 3.785411784.
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