Fuel Cost Calculator India 2026 – Petrol, Diesel, CNG & EV
Planning a road trip or trying to figure out your monthly fuel bill? Our Fuel Cost Calculator gives you an instant answer — just enter the distance, your vehicle’s mileage, and the current fuel price, and the calculator shows the exact trip cost, cost per km, and per-person cost split. Works for petrol, diesel, CNG, and electric vehicles. Read on to understand how fuel costs are calculated, what affects your mileage, and how different fuel types compare on running cost.
Fuel Cost Calculator India
Petrol · Diesel · CNG · Electric · 2026 prices
🏭 Reference Fuel Prices (approx. 2025)
Prices change daily. Check iocl.com for live rates.
Fuel Cost Calculator India 2026 – Petrol, Diesel, CNG & EV Trip Cost Guide
Whether you are planning a weekend road trip, tracking your daily commute costs, or deciding between a petrol car and a CNG option — knowing the exact fuel cost in advance helps you make smarter decisions. Fuel prices in India vary by city, change daily, and depend on state taxes. This makes manual calculation confusing and time-consuming for most people.
The Fuel Cost Calculator on this page removes all that guesswork. It handles the maths instantly and gives you a detailed breakdown — not just the total cost, but also how much fuel you will use, your cost per kilometre, and if you are travelling with others, what each person owes.
How Does the Fuel Cost Calculator Work?
The calculator uses a simple three-step formula that has been used by vehicle owners, logistics companies, and travel planners for decades:
Fuel Needed (litres) = Distance (km) ÷ Mileage (km/l) Total Cost (₹) = Fuel Needed × Fuel Price per litre
Here is a real example to make it clear. Suppose you are driving from Delhi to Jaipur — a one-way distance of around 280 km. Your car gives 15 km per litre and petrol costs ₹95 per litre in your area.
- Fuel needed: 280 ÷ 15 = 18.67 litres
- Total cost: 18.67 × 95 = ₹1,773
- Cost per km: ₹1,773 ÷ 280 = ₹6.33 per km
For CNG vehicles, the same logic applies but you use km/kg and the price per kg instead of per litre. For electric vehicles, you use km/kWh and electricity cost per unit.
Fuel Prices in India – City Wise Reference (2026)
Fuel prices in India are revised every day at 6 AM by oil marketing companies. Prices differ between cities because of varying state taxes, VAT, and transportation costs. Here are approximate prices for major cities in 2026:
City | Petrol (₹/L) | Diesel (₹/L) | CNG (₹/kg) |
Delhi | ₹94.77 | ₹87.67 | ₹74–76 |
Mumbai | ₹103.50 | ₹89.97 | ₹86–90 |
Bangalore | ₹102.86 | ₹88.94 | N/A |
Chennai | ₹100.75 | ₹92.33 | ₹82–85 |
Kolkata | ₹105.01 | ₹91.82 | ₹60–65 |
Hyderabad | ₹107.41 | ₹95.65 | ₹78–82 |
Pune | ₹104.30 | ₹90.49 | ₹86–88 |
Ahmedabad | ₹96.50 | ₹89.20 | ₹68–72 |
Prices change daily. Check live rates at iocl.com, bpcl.in, or the IndianOil ONE app before planning your trip.
Petrol vs Diesel vs CNG vs Electric – Running Cost Comparison
Choosing the right fuel type can make a significant difference to your monthly fuel bill. Here is how the four fuel types compare on running cost per km in 2026:
Fuel Type | Avg Mileage | Avg Price | Cost per km | Monthly* cost |
Petrol | 15 km/l | ₹102/L | ₹6.80/km | ₹5,440 |
Diesel | 18 km/l | ₹90/L | ₹5.00/km | ₹4,000 |
CNG | 22 km/kg | ₹76/kg | ₹3.45/km | ₹2,760 |
Electric | 7 km/kWh | ₹8/kWh | ₹1.14/km | ₹914 |
*Monthly figure assumes 800 km per month (average Indian urban driver). Actual figures vary by city, driving style, and vehicle model.
Electric vehicles are the cheapest to run per km but have a higher upfront purchase cost. CNG is the most cost-effective option for high-mileage drivers who stay within CNG station reach. Diesel makes sense for people who drive long distances regularly. For city commuters with moderate usage, petrol remains the most convenient choice.
What Affects Your Real-World Mileage?
The mileage figure in your owner’s manual is ARAI-certified — measured under controlled test conditions. In real-world driving, actual mileage is typically 10 to 20 percent lower. Here are the main factors that affect it:
- Traffic and stop-go driving — city driving with frequent braking uses significantly more fuel than highway cruising.
- Air conditioning — running the AC reduces mileage by 10 to 15 percent in most vehicles.
- Tyre pressure — under-inflated tyres increase rolling resistance and reduce mileage by 1 to 3 percent.
- Vehicle load — carrying extra passengers or heavy luggage increases fuel consumption. Every 50 kg of extra weight reduces mileage by 1 to 2 percent.
- Engine condition — a vehicle that is due for servicing will consume more fuel. Dirty air filters and old spark plugs are common culprits.
- Driving speed — most vehicles are most fuel-efficient between 50 and 80 km/h. Driving at 100 km/h uses up to 20 percent more fuel than at 80 km/h.
- Fuel quality — using the correct octane rating for your engine matters. Using lower-grade fuel in a high-compression engine reduces performance and mileage.
A practical way to find your actual mileage: fill your tank completely, note the odometer reading, drive normally until the tank is nearly empty, then fill up again. Divide the kilometres driven by the litres filled. This is your real mileage.
7 Tips to Reduce Your Monthly Fuel Cost
- Maintain steady speed on highways — cruise control, if available, helps.
- Check tyre pressure every two weeks — correct pressure saves up to ₹500 per month.
- Service your vehicle on time — a well-maintained engine uses up to 15 percent less fuel.
- Avoid idling — turning off the engine at long traffic signals saves fuel. Idling for 10 minutes burns the same fuel as driving 5 km.
- Plan your route — avoid peak-hour routes when possible. A 10-minute longer route with free-flowing traffic often burns less fuel than a shorter route with heavy stops.
- Use AC wisely — at speeds below 40 km/h, opening windows uses less fuel than running AC. At higher speeds, AC is better than open windows (which increase drag).
Consider carpooling — sharing your daily commute with 2 to 3 colleagues cuts your fuel cost by 50 to 66 percent instantly.
How to Calculate Monthly Fuel Cost
If you want to estimate your monthly fuel expense rather than a single trip, the approach is slightly different. Here is the method:
Monthly fuel cost = (Daily distance × Working days) ÷ Mileage × Fuel price
Example: You commute 25 km each way (50 km daily round trip) for 26 working days per month. Your car gives 14 km/l and petrol costs ₹103/l.
- Monthly distance: 50 × 26 = 1,300 km
- Fuel needed: 1,300 ÷ 14 = 92.86 litres
- Monthly fuel cost: 92.86 × 103 = ₹9,564
- Annual fuel cost: ₹9,564 × 12 = ₹1,14,774
The Fuel Cost Calculator on this page calculates monthly and yearly cost automatically once you enter the one-way trip distance and select the round-trip option.
Group Trip – How to Split Fuel Cost Fairly
When travelling with friends or colleagues, splitting the fuel cost equally is the fairest approach. The calculator on this page has a passengers field — enter the number of people in the car and it automatically divides the total cost per person.
Example: A group of 4 friends drives from Mumbai to Goa — approximately 600 km one way. With a diesel car giving 16 km/l and diesel at ₹91/l:
- Fuel needed: 600 ÷ 16 = 37.5 litres
- Total cost: 37.5 × 91 = ₹3,413
- Per person: ₹3,413 ÷ 4 = ₹853 each way
You can also check our HSRP Number Plate Price Calculator and BH Series Road Tax Calculator for other vehicle-related cost estimates.
Disclaimer
Frequently Asked Questions (FAQs)
Is this fuel cost calculator accurate?
Can I use this calculator for bikes?
Does fuel price change by city?
Is this calculator official?
Can this be used for long road trips?
Frequently Asked Questions (FAQs)
What is the formula for calculating fuel cost?
The formula is: Fuel needed (litres) = Distance ÷ Mileage. Total cost (₹) = Fuel needed × Fuel price per litre. For CNG, use kg and price per kg. For EV, use kWh and electricity cost per unit.
How do I find the current fuel price in my city?
Fuel prices in India are updated every day at 6 AM. Check live prices at iocl.com, bpcl.in, or the IndianOil ONE app. You can also SMS RSP to 9224992249 (IOCL) to get the current price for your city.
Is the ARAI mileage figure accurate?
ARAI mileage is tested under ideal conditions. Real-world mileage is typically 10 to 20 percent lower due to traffic, AC usage, driving style, and road conditions. Use your actual calculated mileage for the most accurate fuel cost estimate.
Which fuel type is cheapest to run in India in 2026?
Electric vehicles have the lowest running cost at approximately ₹1 to ₹2 per km. CNG is next at ₹3 to ₹4 per km. Diesel comes third at ₹5 to ₹7 per km. Petrol is the most expensive to run at ₹6 to ₹9 per km, though it remains the most widely available fuel across India.
Can I use this calculator for bikes?
Yes. The calculator works for all vehicle types — cars, bikes, scooters, and commercial vehicles. For bikes, enter the bike’s mileage (typically 35 to 60 km/l for modern bikes) and the petrol price. The formula is the same.
How do I reduce my monthly fuel cost?
The most effective ways are: maintaining correct tyre pressure, servicing the vehicle on time, avoiding aggressive acceleration, planning routes to avoid peak traffic, and carpooling. Following these steps consistently can reduce your monthly fuel bill by 15 to 25 percent.
Final Words
This Fuel Cost Calculator is a powerful yet simple tool that helps you calculate fuel cost online in seconds.
Whether you are planning a long trip or calculating daily fuel expenses, this tool saves time and money.
If you want accurate fuel planning, better budgeting, and smarter travel decisions, this fuel cost calculator India is the perfect solution.