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Mileage Calculator

Everyday

Calculate fuel efficiency in km/L or MPG, total fuel cost, and cost per kilometre. Enter distance, fuel consumed, and fuel price for instant results.

Reviewed by the thecalcu.com team Ā· Last updated July 25, 2026

Trip Details

500 km
10km5000km
35 L
1L200L
$105 /L
$50/L$200/L
Fuel Efficiency
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km/L (KMPL)
0 km/L25+ km/L
Poor
L / 100 km
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L/100km
Miles per Gallon
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MPG
Cost Breakdown
Total Fuel Cost—
Cost per Kilometre—/km

What is a Mileage?

A Mileage Calculator computes a vehicle's fuel efficiency from actual trip data, the distance covered and the fuel consumed, and translates that into three internationally recognised efficiency metrics (km/L, L/100km, and MPG), plus the total fuel cost and cost per kilometre for the journey. It turns raw fill-up receipts into actionable insights about your vehicle's real-world performance.

In India, fuel efficiency is expressed as km/L (kilometres per litre) and is the primary number consumers use to compare cars, track maintenance, and estimate running costs. The ARAI (Automotive Research Association of India) certifies mileage figures for all vehicles sold in India, but these figures are measured under controlled lab conditions and typically exceed real-world mileage by 15–25%. Using the Mileage Calculator on your own fill-up data gives you the accurate number specific to your driving pattern.

Tracking mileage over time is also an early warning system for vehicle health. A sudden 15–20% drop in fuel efficiency, without any change in driving habits, often signals engine issues, a clogged air filter, low tyre pressure, or a fuel system problem. Catching this early can prevent expensive repair bills. The Mileage Calculator makes it easy to compute your km/L at every fill-up and spot trends.

Mileage is directly tied to fuel cost, which for many Indian households is a significant monthly expense. At ₹105 per litre, driving 1,500 km per month at 12 km/L costs ₹13,125 in fuel, a figure the Mileage Calculator surfaces immediately alongside the efficiency metrics, helping you see the rupee impact of every km/L gained or lost.

Why Use a Mileage Calculator?

Cut through ARAI claims. Manufacturer-advertised mileage and actual road mileage can differ significantly. The Mileage Calculator puts your real-world number front and centre, so you know exactly what your vehicle is actually delivering.

Compare vehicles accurately. When choosing between two cars, comparing their fuel costs at your actual mileage, rather than ARAI figures, gives a more honest cost-of-ownership comparison.

Track efficiency trends. Entering km/L at every fill-up lets you spot when performance degrades, often the first sign of an engine or maintenance issue.

Calculate trip cost. Planning a Bengaluru-to-Mysuru drive (ā‰ˆ 150 km)? Enter your vehicle's mileage, the expected distance, and the fuel price to get the total fuel cost before you leave.

Compare efficiency across metrics. If you are reading European or American car reviews, the L/100km or MPG figures are meaningless without conversion. The Mileage Calculator displays all three formats simultaneously.

Who Should Use This Calculator?

Car owners tracking their vehicle's fuel efficiency at every fill-up using the full-tank method benefit from instant km/L calculations without manual arithmetic.

Ride-share and delivery drivers on Ola, Uber, Dunzo, or Swiggy Instamart who want to know their fuel cost per kilometre to verify whether their per-kilometre earnings cover running costs.

Fleet managers tracking fuel consumption across multiple vehicles can use the Mileage Calculator for per-vehicle calculations, then aggregate manually or in a spreadsheet.

Car buyers comparing models can input real-world mileage data from owner forums and fuel price to compute the monthly fuel bill for each shortlisted vehicle at their expected usage.

Long-distance travellers planning road trips across multiple states can estimate the total fuel cost for the journey by entering the planned distance, expected mileage, and current fuel price at the starting point.

What Insights Does the Mileage Calculator Give You?

KMPL (Fuel Efficiency) is the primary metric, how many kilometres your vehicle travels per litre of fuel. The result is shown against a benchmark bar with colour coding: green for ≄ 15 km/L (good), yellow for 10–15 km/L (average), red for < 10 km/L (poor by Indian standards).

L/100km is the European fuel consumption standard. Lower is better, it represents how many litres you burn per 100 kilometres driven. Useful for comparing with European car specifications or imported vehicle reviews.

Miles per Gallon (MPG) is the US standard, shown for reference when consulting American car forums or comparing with US vehicle ratings.

Total Fuel Cost is the rupee cost for the entire distance entered, computed as Fuel Consumed (L) Ɨ Fuel Price (₹/L). This is the actual amount you spent on fuel for the trip or period.

Cost per Kilometre divides the total fuel cost by the distance to give the per-km running cost for fuel alone. This is the key number for gig drivers computing delivery economics or comparing vehicle options.

How to use this Mileage calculator

  1. Enter Distance Travelled, the odometer reading change or trip meter distance in kilometres since the last full-tank fill-up.
  2. Enter Fuel Consumed, the number of litres added at the petrol pump to refill the tank to the same level. Use the full-tank method for accuracy: fill to full, drive, fill to full again, and note the litres added on the second fill.
  3. Enter Fuel Price, the current price per litre in ₹. Check your pump receipt for the exact figure, as prices change daily in India.
  4. Read the results, KMPL is the headline figure, with L/100km and MPG for international comparisons. The efficiency bar contextualises your result against Indian benchmarks. The cost panel shows the full trip cost and per-km cost.

Formula & Methodology

KMPL = Distance (km) Ć· Fuel Consumed (L)

L/100km = 100 Ć· KMPL

MPG (US) = KMPL Ɨ (1 km Ć· 1.60934 miles) Ć· (1 L Ć· 3.78541 US gallons) = KMPL Ɨ 2.35215

Total Fuel Cost = Fuel Consumed (L) Ɨ Fuel Price (₹/L)

Cost per Kilometre = Total Fuel Cost Ć· Distance (km)

Worked example: A Maruti Baleno owner in Pune drives from Pune to Goa and back, approximately 900 km round trip, and adds 62 litres of petrol at ₹103/L to refill the tank.

- KMPL = 900 Ć· 62 = 14.52 km/L
- L/100km = 100 Ć· 14.52 = 6.89 L/100km
- MPG = 14.52 Ɨ 2.352 = 34.15 MPG
- Total Fuel Cost = 62 Ɨ 103 = ₹6,386
- Cost per km = 6,386 Ć· 900 = ₹7.10/km

The owner's real-world mileage of 14.52 km/L compares against the ARAI figure of 22.35 km/L, a 35% real-world reduction consistent with highway driving at 100+ km/h in terrain and with luggage weight.

Frequently Asked Questions

Mileage, expressed as km/L (kilometres per litre) in India, is the distance a vehicle travels on one litre of fuel. Calculate it by dividing the distance travelled by the fuel consumed: KMPL = Distance (km) Ć· Fuel (L). For example, if your car covers 600 km on 45 litres of petrol, the mileage is 600 Ć· 45 = 13.33 km/L.
Enter the total distance travelled in kilometres, the litres of fuel consumed over that distance, and your current fuel price per litre. The calculator instantly shows your fuel efficiency in km/L, litres per 100 km, miles per gallon (MPG), total fuel cost, and cost per kilometre.
For petrol cars in India, mileage above 15 km/L is considered good; 12–15 km/L is average for mid-size sedans and compact SUVs. Diesel cars typically return 17–22 km/L. Hybrid vehicles can achieve 22–28 km/L. The ARAI (Automotive Research Association of India) certified mileage is tested under controlled conditions, real-world mileage is typically 15–25% lower.
Manufacturer mileage figures are tested under idealised ARAI or WLTP (Worldwide Harmonised Light Vehicle Test Procedure) lab conditions, constant speed, no traffic, controlled temperature, no air conditioning. Real-world mileage is lower due to city stop-and-go traffic, AC usage (reduces mileage by 10–15%), tyre pressure variations, carrying load, and driving style. Use the Mileage Calculator on your actual fill-up data to track real-world efficiency.
L/100km (litres per 100 kilometres) is the fuel consumption standard used in Europe, Australia, and many countries. It is the inverse of km/L: L/100km = 100 Ć· km/L. A car getting 15 km/L consumes 6.67 L/100km. Lower L/100km means better fuel economy; higher km/L means better mileage. India predominantly uses km/L, while the US uses MPG.
MPG (miles per gallon) is the US fuel economy standard. To convert: MPG = km/L Ɨ 0.621371 (km to miles) Ć· 0.264172 (litres to US gallons). Simplified: MPG ā‰ˆ km/L Ɨ 2.352. So 15 km/L ā‰ˆ 35.3 MPG. The Mileage Calculator displays the MPG equivalent automatically alongside the km/L result.
Petrol prices in Indian metros as of mid-2026 are approximately ₹100–₹108 per litre in cities like Delhi and Mumbai; diesel is approximately ₹88–₹95 per litre. Prices vary by state due to local VAT and cess. Check the Indian Oil, BPCL, or HPCL website for daily rates in your city, and enter the exact price in the Mileage Calculator for accurate fuel cost estimates.
Fill your tank to full (until the nozzle auto-stops). Reset your trip meter to zero. Drive normally until you have used most of the tank. Fill the tank to full again and note the litres added. Note the distance on the trip meter. KMPL = Distance Ć· Litres added at second fill. This full-to-full method accounts for any inconsistency in tank fullness and is the most accurate real-world mileage measurement.
A car that improves from 12 km/L to 15 km/L on a 1,500 km monthly driving pattern saves (1,500/12 āˆ’ 1,500/15) Ɨ ₹105 = (125 āˆ’ 100) Ɨ ₹105 = ₹2,625 per month, or ₹31,500 per year. Over 5 years, this difference compounds to ₹1.575 lakh in fuel savings alone. Use the cost per km output from the Mileage Calculator to compare vehicles at your actual usage level.
Yes, under-inflated tyres increase rolling resistance and reduce fuel efficiency by 0.5–3% per 10 PSI below the recommended pressure. Maintaining the manufacturer-recommended tyre pressure (usually printed on the door jamb sticker) is one of the cheapest and most effective ways to preserve mileage. Other factors include air filter condition, engine oil grade, and whether the air conditioning compressor is running.
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