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Mileage Calculator — Calculate & Convert kmpl, MPG & L/100km

Calculate your vehicle's real-world fuel efficiency, convert mileage to km, and compare across international units.

💰 Know your mileage? Estimate fuel costs →

Calculate Your Vehicle's Mileage

Enter distance and fuel used — or enter mileage to find how far you can travel.

Total km driven
Total litres used
₹ per litre
Your Mileage
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Mileage Converter — km/l, MPG & L/100 km

Convert between the world's fuel economy units. Useful when comparing vehicles across regions.

Mileage Calculator — Frequently Asked Questions

Common questions about using the tool, calculating real-world mileage, and converting fuel efficiency units.

How to Use This Tool
Select the Mileage Calculator tab and make sure Distance → Mileage mode is active. Enter the total distance you drove, the total fuel consumed, and select your country — the units adjust automatically. Optionally enter your fuel price to get cost-per-km alongside your mileage. Hit Calculate Mileage and the tool instantly shows your result in km/l plus equivalent MPG (US), MPG (UK) and L/100km values.
Switch to the Mileage → Distance mode inside the Mileage Calculator tab by clicking the toggle. Enter your vehicle's known mileage (km/l or MPG depending on your country) and the amount of fuel available. Hit Calculate Distance and the tool gives you your estimated range. You can also use our Fuel Cost Calculator to estimate what that journey will cost you.
After calculating in Distance → Mileage mode, a gauge appears showing whether your mileage is Poor, Average, Good, or Excellent. The rating is benchmarked against real-world norms for your selected vehicle type. Use the vehicle type buttons — Car, Bike, SUV, or Truck — to switch the benchmark. For example, 14 km/l is Average for a car but Poor for a bike. The gauge only appears when km/l units are active.
Click the Mileage Converter tab. Enter your value, select the unit you are converting from (km/l, MPG US, MPG UK, or L/100km), and hit Convert. The tool instantly displays all four units simultaneously — no manual calculation needed.
Selecting your country automatically switches the distance and fuel units to match local standards. India, Australia, and most European countries use km and litres. The United States switches to miles and gallons. The mileage result, fuel price hint, and currency symbol all update accordingly — you never need to manually convert units before entering your data.
Yes. In Distance → Mileage mode, enter your fuel price in the optional Fuel Price field before hitting Calculate. The result will show your cost per km (or per mile for US/UK), your total fuel cost for the trip, and your mileage — all in one calculation. For a full monthly and yearly fuel expense breakdown, try our dedicated Fuel Cost Calculator.
Mileage Calculator
Divide the total distance travelled by the total fuel consumed. For example, 400 km on 25 litres gives 400 ÷ 25 = 16 km/l. In miles per gallon, divide miles driven by gallons used. Our calculator handles both metric and imperial units automatically. For real-world accuracy, use the tankful-to-tankful method described below.
This is the most accurate real-world mileage measurement method. Fill your tank completely and note the odometer reading or reset your trip meter. Drive normally until your next refuel. Fill the tank again to full and note the exact amount of fuel added and the distance covered. Divide distance by fuel — that is your real-world mileage. Repeat over 2–3 fill-ups and average the results, as a single measurement can be skewed by driving conditions such as traffic or motorway speeds.
It depends on the fuel type and vehicle size. Petrol cars typically achieve 12–18 km/l (28–42 MPG), diesel cars 16–24 km/l (38–56 MPG), and CNG vehicles 20–30 km/kg. Bikes range from 35–65 km/l depending on engine size. SUVs are lower at 8–15 km/l, and trucks average 3–6 km/l. Hybrids often exceed 20 km/l. You can check claimed mileage figures for specific models on our Bikes and Cars pages.
Manufacturers test vehicles under controlled laboratory conditions — in India under ARAI standards, in Europe under WLTP, and in the US under EPA cycles. Real-world driving involves city traffic, air conditioning, varying speeds, road gradients, vehicle load, and tyre wear. Expect real-world mileage to be 15–25% lower than the official figure. Our calculator measures your actual mileage using real distance and fuel data, not lab estimates.
Several non-mechanical factors cause mileage drops: increased vehicle load, towing, stop-and-go city traffic, cold weather (engines run richer when cold), a recent change to a different fuel grade, low tyre pressure, or driving at higher speeds than usual. A sustained drop of more than 15% with no change in driving conditions is worth investigating — it can be an early sign of a clogged air filter, worn spark plugs, a failing O2 sensor, or clutch slip.
Yes, significantly. Most petrol and diesel engines reach peak fuel efficiency between 50–80 km/h (30–50 mph). Below this range, engines run inefficiently due to low gear ratios. Above it, aerodynamic drag increases exponentially — driving at 120 km/h can consume 25–30% more fuel than at 80 km/h. Highway driving at a steady 80–90 km/h typically delivers the best real-world mileage for most vehicles.
Yes. Running the AC can reduce mileage by 5–25% depending on the vehicle, outside temperature, and driving speed. The impact is greatest in city traffic where the engine is already working harder. At highway speeds above 80 km/h, using AC is actually more efficient than opening windows, which increases aerodynamic drag.
Cold weather reduces fuel efficiency for several reasons: engines take longer to reach optimal operating temperature and run a richer fuel mixture during warm-up, tyre pressure drops (roughly 1 PSI per 6°C drop in temperature), and thicker engine oil increases internal friction. In very cold climates, real-world mileage can drop 10–20% in winter compared to summer. Keeping tyres properly inflated and allowing the engine to warm up briefly before driving helps minimise the impact.
Yes. Electric vehicles do not use litres or gallons, so km/l and MPG do not apply. EV efficiency is measured in km/kWh (kilometres per kilowatt-hour) or miles/kWh — higher is better. Some regions also use MPGe (miles per gallon equivalent) to compare EVs with petrol vehicles on a common scale. A typical EV achieves 5–8 km/kWh under real-world conditions. You can also check your EV battery's health with our EV Battery Health Calculator.
The most effective steps are: maintain tyre pressure at the manufacturer's recommended PSI, drive at steady speeds between 45–80 km/h, avoid hard acceleration and late braking, service your air filter and spark plugs on schedule, reduce unnecessary weight in the vehicle, and minimise AC use at low speeds. Each of these individually can improve efficiency by 2–8%, and combined can recover 15–20% of lost mileage. Use our Fuel Cost Calculator to measure the savings in real money.
Mileage Converter
To convert US MPG to km/l, multiply by 0.4251. For UK (Imperial) MPG, multiply by 0.3540. To go the other way, divide km/l by 0.4251 to get US MPG. For example, 15 km/l ≈ 35.3 US MPG. Use the Mileage Converter tab above for instant results across all four units simultaneously.
L/100km (litres per 100 kilometres) measures how much fuel a vehicle consumes over 100 km — lower is better. It is the standard in Europe, Australia, and Canada. By contrast, km/l and MPG measure how far you travel per unit of fuel — higher is better. To convert km/l to L/100km, divide 100 by your km/l figure. For example, 15 km/l = 100 ÷ 15 = 6.67 L/100km.
All three measure fuel efficiency but use different units. kmpl (km/l) is kilometres per litre, used in India and most metric countries. US MPG is miles per US gallon (3.785 litres). UK MPG is miles per Imperial gallon (4.546 litres) — the UK gallon is larger, so UK MPG figures are always higher than US MPG for the same vehicle. For example, a car rated at 40 MPG US is only 33 MPG UK. Use our converter to avoid confusion when comparing international vehicle specs.
Multiply your mileage by the fuel available. For example, if your car does 15 km/l and has 45 litres remaining, your range is 15 × 45 = 675 km. In MPG terms, multiply your MPG by gallons available to get miles. Use the Mileage → Distance mode in the Calculator tab above for instant results in your local units. To then estimate the cost of that journey, visit our Fuel Cost Calculator.

How to Calculate Vehicle Mileage

The mileage calculator above uses a simple formula: divide the total distance driven by the fuel consumed. If you drove 400 km and used 28 litres of petrol, your mileage is 400 ÷ 28 = 14.3 km/l. This real-world measurement is far more reliable than manufacturer-claimed figures tested under laboratory conditions.

Understanding Mileage Units — km/l, MPG & L/100km

Fuel efficiency is measured differently around the world. km/l (kilometres per litre) is used in India and most of Asia. The US uses MPG (miles per US gallon), and the UK uses MPG based on the larger Imperial gallon — so UK figures always appear higher than US for the same vehicle. Europe, Australia, and Canada use L/100km where lower numbers mean better efficiency. Our mileage converter tab translates between all four standards instantly.

Convert Mileage to Kilometres — Estimate Your Range

Want to know how far you can drive on a full tank? Use the Mileage → Distance mode: enter your vehicle's known mileage and the fuel in your tank, and it calculates your total range. For example, 15 km/l × 35 litres = 525 km. Once you know your range, use our Fuel Cost Calculator to estimate the cost of the journey.

What Is Good Mileage?

Good mileage varies significantly by vehicle type. Petrol cars typically deliver 12–18 km/l (28–42 MPG). Diesel cars achieve 16–24 km/l. Bikes range from 35–65 km/l depending on engine size. SUVs sit lower at 8–15 km/l, and commercial trucks average 3–6 km/l. The efficiency gauge in the calculator benchmarks your real-world result against these ranges and rates it as Poor, Average, Good, or Excellent. You can check claimed mileage figures for specific models on our Bikes and Cars pages.

Tips to Improve Mileage

Consistent speeds between 50–80 km/h yield the best efficiency for most engines. Keep tyres at recommended pressure — under-inflation alone can reduce mileage by 3–5%. Regular servicing, smooth acceleration, reduced AC use at low speeds, and removing unnecessary weight all contribute meaningfully. Tracking mileage monthly helps you spot problems early — a sudden drop of 15% or more often signals an engine or tyre issue before it becomes expensive.

Already know your mileage? Try our Fuel Cost Calculator to project your monthly and yearly fuel expenses based on your real-world km/l figure.

Know Your Mileage? Calculate Your Fuel Costs

Use your mileage result to estimate monthly and yearly fuel expenses with our dedicated tool.

Open Fuel Cost Calculator →

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