5 US gallons to liters
18.93 L
5 gal = 18.93 L.
liters
18.93L
5 gal = 18.93 L
The short answer
How many liters is 5 US gallons?
5 gal = 18.93 L. 1 US gallon = 3.785412 liters, so the working is 5 × 3.785412 = 18.93.
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 US gallon = 3.785412 liters 5 × 3.785412 = 18.93
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 (L) | Off by |
|---|---|---|
| Whole number | 19 | +0.07294 |
| 1 decimal | 18.9 | −0.02706 |
| 2 decimals | 18.93 | +0.00294 |
Round trip: take 18.93 L back the other way and you land on 5.0008 gal — a drift of 0.0008 gal. That gap is the rounding, not the conversion.
What 5 gal looks like
5 gal
The 20 lb barbecue cylinder is a five gallon tank, filled to about 4.7 gallons to leave room for vapour.
Frequently asked questions
What is 5 US gallons in liters?
5 US gallons is 18.93 liters. 1 US gallon = 3.785412 liters, so the working is 5 × 3.785412 = 18.93.
How accurate is 18.93 L?
Rounding to 18.93 L and converting straight back gives 5.0008 gal, a drift of 0.0008 gal from the 5 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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