Conversion
Liters to Gallons
Convert liters to US gallons instantly — type a value and watch it convert live, with the formula, the working shown step by step, and lookup charts for fuel, drinks, and tanks.
Convert liters to gallons
L ↔ gal× 0.2641720524
10 L equals
2.6417gal
L
10
gal
2.6417
per L
0.2641720524
Edit either field — the other updates live.
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The basics
What does the conversion mean?
Liters and gallons both measure volume — they are just two different cups poured over the same liquid. A liter is smaller, so any volume expressed in liters will be a larger number than the same volume in gallons. Converting is a single multiplication; the only thing to learn is the factor.
1 gal = 3.785411784 L
A gallon is the larger unit
One US gallon holds nearly four liters, so the gallon figure is always smaller than the liter figure. Whenever you switch from liters to gallons, expect the number to shrink — but the volume in the bottle stays the same.
10 L ≈ 2.64 gal
× 0.2641720524
One factor does it all
There is no offset and no zero point to shift — volume scales cleanly from one unit to the other. Multiply the liters by the factor and you have the US gallons. The factor is just the reciprocal of the exact gallon definition.
50 L ≈ 13.21 gal
Method
How to convert liters to gallons by hand
Two real steps and a sanity check. It is one multiplication at heart.
- 1
Write down the factor
One liter equals 0.2641720524 US gallons. A US gallon is defined as exactly 3.785411784 liters, and dividing 1 by that gives the conversion factor (0.2641… is plenty for everyday work).
1 L = 0.2641720524 gal - 2
Multiply the liters
Multiply your volume in liters by the factor. The product is the same volume expressed in US gallons.
10 × 0.2641720524 = 2.6417 - 3
Sanity-check the size
The gallon figure should be smaller — roughly a quarter of the liter figure. If it came out larger, you multiplied by the reverse factor (3.785) instead.
10 L → 2.64 gal ✓
Quick chart
Liters to gallons lookup table
Looking up “how many gallons is X liters?” — here it is at a glance. Switch between round liter values, common fuel tank sizes, and the reverse gallons-to-liters direction.
L
gal
1 L
0.264 gal
2 L
0.528 gal
5 L
1.321 gal
10 L
2.642 gal
20 L
5.283 gal
40 L
10.567 gal
50 L
13.209 gal
60 L
15.85 gal
100 L
26.417 gal
Where it shows up
When you actually need this
Three everyday places where the liter-to-gallon conversion matters most — fuel, drinks, and the mileage figure on a sticker.
50 L ≈ 13.2 gal
Fuel & gas tanks
Car fuel capacities are listed in liters in metric countries but in gallons on US window stickers. Converting tells you how many fill-ups a road trip needs, and how far a tank really goes when you rent a car abroad.
2 L ≈ 0.53 gal
Beverages & bottles
The standard soda bottle is two liters. Recipes from the US often call for cups or gallons; recipes from Europe use milliliters and liters. Knowing the factor lets you scale either way without a second guess.
L/100 km ↔ mpg
Fuel economy labeling
Europe rates fuel economy as liters per 100 km; the US uses miles per gallon. Converting the consumption first (liters) and the distance second (km to miles) is the two-step path to comparing the same car on both specs.
Reference
Common volumes in liters and gallons
Volumes worth knowing by heart — from a single bottle to a full tank, all converted with the same factor the tool uses.
Item
L
gal
1 L bottle
1
0.264
2 L soda bottle
2
0.528
5 L water jug
5
1.321
50 L car fuel tank
50
13.209
100 L large tank
100
26.417
Worth knowing
Facts and shortcuts worth remembering
A handful of tricks that make liter-to-gallon conversion almost automatic.
1 gal = 3.785411784 L
The exact definition
A US gallon is not approximately but exactly 3.785411784 liters by international definition. The conversion factor 0.2641720524 is its precise reciprocal — this is why the calculator gives an exact answer, not an approximation.
1 L ≈ 0.264 gal
The short form
For casual use, 0.264 is easy to remember: one liter is roughly a little over a quarter of a gallon. It runs within 0.01 percent of the exact factor, so it is fine for everything except precision fuel billing.
× 3.785
The reverse trip
To go from gallons back to liters, multiply by 3.785411784. The two factors are exact reciprocals — multiply by one, then the other, and you land back where you started.
2 L ≈ 0.53 gal
The bottle benchmark
A two-liter bottle is the most common reference point: just over half a US gallon. Once you know this, you can quickly estimate other volumes — a five-liter jug is about two and a half bottles, or 1.32 gallons.
÷ 4 estimate
The quarter shortcut
Dividing by four gives a fast mental estimate. It slightly overstates the gallon count (you should divide by 3.785), but it stays within about five percent — close enough to judge a fuel stop or a water purchase.
40 L → 40 ÷ 4 = 10 gal (actual: 10.57)
235.214 ÷ (L/100 km)
Fuel economy bridge
When comparing fuel efficiency across continents, the formula mpg = 235.214 ÷ (L/100 km) bridges the gap. A car rated at eight L/100 km works out to roughly 29 mpg — both numbers describe the same thirst.
Variants
US gallon vs UK imperial gallon
There is more than one gallon. If you are converting for a UK recipe, a British fuel receipt, or an older imperial reference, you need a different factor — and this tool uses the US one.
1 US gal = 3.785 L
US gallon (this tool)
The US liquid gallon is the standard in the United States for fuel, beverages, and agriculture. It is exactly 3.785411784 liters, so one liter is 0.2641720524 US gallons. When Americans say “gallon”, this is what they mean — and this calculator uses it exclusively.
1 imperial gal = 4.546 L
UK imperial gallon
The imperial gallon, still used in the United Kingdom and some Commonwealth countries, is about 20 percent larger at 4.54609 liters. One liter equals roughly 0.21997 imperial gallons. A fuel pump in the UK once measured in imperial gallons; today British pumps show liters, but mpg figures still use imperial gallons — which is why British mpg looks better than US mpg for the same car.
Note: A US dry gallon (for grain and dry goods) also exists at 4.405 liters, but it is rarely encountered outside agricultural commodity trading.
Common mistakes
Where conversions go wrong
Three slips that produce a wrong answer — easy to avoid once named.
US ≠ imperial
Grabbing the wrong gallon
Using the imperial gallon factor (0.21997) instead of the US gallon factor (0.26417) understates the result by about seventeen percent. Always confirm which gallon the context demands before choosing a factor.
× 0.264 not × 3.785
Multiplying by the reverse
The factor 3.785 converts gallons to liters, not the other way around. If you accidentally multiply liters by 3.785, your result will be roughly fourteen times too large — a liter does not contain more than three gallons.
L ↔ gal direction
Mixing up which is bigger
A gallon is larger than a liter, so the gallon count is always smaller than the liter count for the same volume. If your answer grew when converting liters to gallons, you ran the conversion backwards.
FAQ
Common questions
One liter equals 0.2641720524 US gallons. Put the other way, a US gallon is exactly 3.785411784 liters — so a liter is roughly a quarter of a gallon.
Multiply the number of liters by 0.2641720524. For example, 10 L × 0.2641720524 ≈ 2.642 US gallons. The calculator above does this live and shows the working step by step.
A standard 2 L soda bottle holds 2 × 0.2641720524 ≈ 0.528 US gallons — just over half a gallon.
No. A US gallon is exactly 3.785411784 liters; a UK imperial gallon is 4.54609 liters — about 20% larger. This tool uses the US gallon. If you need imperial gallons, multiply liters by 0.21997 instead.
A 50-liter fuel tank holds 50 × 0.2641720524 ≈ 13.21 US gallons. Most compact car tanks range from 45 to 60 liters, so you'll see fuel capacities between about 12 and 16 US gallons.
Divide the liters by 4. It slightly overstates the result (the real factor is ÷ 3.785), but it lands within 5 percent — good enough for estimating a fuel stop or a water jug.
One US gallon is exactly 3.785411784 liters. That is the reverse of the 0.2641720524 factor — to convert gallons back to liters, multiply by 3.785411784.
Fuel economy expressed as liters per 100 kilometers and miles per gallon point in opposite directions — lower L/100 km is better, while higher mpg is better. To convert: mpg = 235.214 ÷ (L/100 km). For example, 8 L/100 km ≈ 29.4 mpg.
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Ugo CharlesBuilt and fact-checked against our editorial standards · Last updated June 2026
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