100 liters to US gallons
26.42 gal
100 L = 26.42 gal, or 6 gal 2.42 qt.
US gallons
26.42gal
100 L = 26.42 gal
The short answer
How many US gallons is 100 liters?
100 L = 26.42 gal, which reads as 6 gal 2.42 qt. 1 liter = 0.264172 US gallons, so the working is 100 × 0.264172 = 26.42.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 liter = 0.264172 US gallons 100 × 0.264172 = 26.42
100 liters as 6 gal 2.42 qt
A decimal is the right form for a spreadsheet and the wrong one for almost everything else. Split into whole units, 100 L is 6 gal 2.42 qt — the reading you would actually give someone, and the one a tape measure, a scale, or a timetable is marked in.
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (gal) | Off by |
|---|---|---|
| Whole number | 26 | −0.41721 |
| 1 decimal | 26.4 | −0.01721 |
| 2 decimals | 26.42 | +0.00279 |
Round trip: take 26.42 gal back the other way and you land on 100.0106 L — a drift of 0.0106 L. That gap is the rounding, not the conversion.
Frequently asked questions
What is 100 liters in US gallons?
100 liters is 26.42 US gallons. 1 liter = 0.264172 US gallons, so the working is 100 × 0.264172 = 26.42.
What is 100 liters in gallons and quarts?
6 gal 2.42 qt. A decimal answer such as 26.42 gal is the right shape for a form field or a spreadsheet, but the compound form is what a tape measure, a scale, or a schedule actually reads.
How accurate is 26.42 gal?
Rounding to 26.42 gal and converting straight back gives 100.0106 L, a drift of 0.0106 L from the 100 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Liters to Gallons Converter
Convert liters to US gallons — fuel fills, aquariums, and container sizes.
Open the liters to gallons converter →