15 MPG (US) to L/100km
15.7 L/100km
15 mpg = 15.7 L/100km.
L/100km
15.7L/100km
15 mpg = 15.7 L/100km
The short answer
How many L/100km is 15 MPG (US)?
15 mpg = 15.7 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 15 = 15.7.
The working
MPG (US) and L/100km are reciprocals of each other, so the conversion is a division rather than a multiplication — which is why the two scales never line up evenly.
L/100km = 235.214583 ÷ MPG (US) 235.214583 ÷ 15 = 15.7
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/100km) | Off by |
|---|---|---|
| Whole number | 16 | +0.31903 |
| 1 decimal | 15.7 | +0.01903 |
| 2 decimals | 15.68 | −0.00097 |
Round trip: take 15.7 L/100km back the other way and you land on 14.9818 mpg — a drift of 0.0182 mpg. That gap is the rounding, not the conversion.
What 15 mpg looks like
15 mpg
Around 15.3 miles per gallon the two scales cross, so the same car reads the same number in mpg and in L/100km.
Frequently asked questions
What is 15 MPG (US) in L/100km?
15 MPG (US) is 15.7 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 15 = 15.7.
How accurate is 15.7 L/100km?
Rounding to 15.7 L/100km and converting straight back gives 14.9818 mpg, a drift of 0.0182 mpg from the 15 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
MPG to L/100km Converter
Convert US MPG to L/100km — read a car’s economy the way the rest of the world quotes it.
Open the mpg to l/100km converter →