Loading…
Loading…
FuelBench
Miles driven and gallons used — get your real-world MPG and the L/100km equivalent.
EPA/manufacturer MPG ratings come from standardized lab tests — real-world driving (traffic, climate control, driving style, terrain) almost always produces a different number, which is exactly what this calculator measures from your actual fill-ups.
MPG is 'distance per unit of fuel' (higher is better), while L/100km is 'fuel per unit of distance' (lower is better) — the two scales run in opposite directions, which is a common source of confusion when comparing cars across regions.
Fuel economy
30 MPG
What you entered
Fuel economy = miles ÷ gallons
300 ÷ 10= 30.0 MPGConvert to metric (L/100km)
235.21 ÷ 30.0= 7.84 L/100kmResult
Fuel economy: 30 MPG
Driving 300 miles on 10 gallons works out to 30 MPG — 7.84 L/100km.