Fuel Efficiency Converter
Convert between km/L, L/100km, miles per gallon (US and UK), and other fuel economy units.
1 Kilometers per Liter equals…
| Unit | Value |
|---|---|
| Kilometers per Liter (km/L) | 1 |
| Liters per 100 km (L/100km) | 100 |
| Miles per Gallon (US) (mpg (US)) | 2.3521442 |
| Miles per Gallon (UK) (mpg (UK)) | 2.8248109 |
| Miles per Meter (mi/L) | 0.62137274 |
| Kilometers per Gallon (US) (km/gal) | 3.78541 |
Click any row to set it as the target unit.
About the Fuel Efficiency Converter
Fuel efficiency is quoted in km/L in India, L/100km in Europe, and miles per gallon (MPG) in the US and UK. Comparing vehicles across regions or evaluating imported vehicle specifications requires accurate conversion. Higher km/L means better efficiency; lower L/100km means better efficiency; higher MPG means better efficiency - all three have different directionality, which is counterintuitive.
Fuel Efficiency Conversion
km/L to L/100km: L/100km = 100 / km/L · km/L to MPG (US): MPG = km/L × 2.352
1 US gallon = 3.785 liters · 1 UK (Imperial) gallon = 4.546 liters · MPG (UK) = km/L × 2.825 · Average Indian car: 15-20 km/L city, 18-25 km/L highway · EV equivalent: km/kWh (typically 5-8 km/kWh)
Worked Example
Indian car claims 18 km/L ARAI. What is this in L/100km and US MPG?
18 km/L = 5.56 L/100km = 42.3 US MPG · Comparison: Toyota Corolla US average ≈ 32 MPG
Tips & Insights
- 1
ARAI-claimed figures are tested under ideal conditions - real-world efficiency is typically 15-25% lower.
- 2
When comparing EV efficiency in km/kWh: a car doing 6 km/kWh at ₹7/unit electricity costs ₹1.17/km vs petrol at ₹7/km for 14 km/L.
- 3
L/100km is more intuitive for fuel cost calculation: at ₹104/L, a car using 6 L/100km costs ₹624 per 100 km.
Why this matters for you
As India evaluates EVs vs petrol vs CNG vehicles, comparing efficiency across different unit systems is increasingly common. A first-time EV buyer comparing 'km/kWh' to 'km/L' without conversion tools will make a poorly informed decision. Understanding fuel efficiency in all its representations supports better vehicle purchase decisions and realistic running cost expectations.
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