12 liters to US gallons
3.17 gal
12 L = 3.17 gal.
US gallons
3.17gal
12 L = 3.17 gal
The short answer
How many US gallons is 12 liters?
12 L = 3.17 gal. 1 liter = 0.264172 US gallons, so the working is 12 × 0.264172 = 3.17.
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 12 × 0.264172 = 3.17
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 | 3 | −0.17006 |
| 1 decimal | 3.2 | +0.02994 |
| 2 decimals | 3.17 | −0.00006 |
Round trip: take 3.17 gal back the other way and you land on 11.9998 L — a drift of 0.0002 L. That gap is the rounding, not the conversion.
Frequently asked questions
What is 12 liters in US gallons?
12 liters is 3.17 US gallons. 1 liter = 0.264172 US gallons, so the working is 12 × 0.264172 = 3.17.
How accurate is 3.17 gal?
Rounding to 3.17 gal and converting straight back gives 11.9998 L, a drift of 0.0002 L from the 12 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
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