Free Fuel Calculators
Understand and reduce what your car really costs to run. Estimate fuel consumption, plan trip and fuel budgets, compare petrol vs diesel or hybrid, and measure your eco-driving savings — all free, no registration.
Fuel Consumption Calculator
Convert fuel use into L/100 km, MPG (US & UK) and km/L.
Open calculator →Fuel Cost Calculator
Estimate the cost of a journey based on distance, consumption and fuel price.
Open calculator →Road Trip Fuel Calculator
Plan the fuel needed and budget for your next road trip.
Open calculator →Fuel Tank Range Calculator
Find how far you can drive on a full tank (and on your reserve).
Open calculator →MPG Converter
Convert between L/100 km, MPG (US & UK) and km/L.
Open calculator →Fuel Economy Tracker
Log your fill-ups and measure your real consumption over time.
Open calculator →Fuel Saving Calculator
See how much optimizing your driving saves on fuel every year.
Open calculator →Idle Fuel Cost Calculator
What idling costs you per day, month and year.
Open calculator →Gas vs Diesel Calculator
Compare annual fuel costs between petrol and diesel.
Open calculator →Hybrid vs Gas Calculator
Compare annual costs and payback of a hybrid against a petrol car.
Open calculator →Fuel Price Trip Planner
Is it worth a detour to a cheaper petrol station?
Open calculator →Car Cost Per Kilometer
The real cost of driving one kilometre, all costs included.
Open calculator →Total Car Ownership Cost
The complete annual and monthly cost of owning a car.
Open calculator →Fuel Budget Planner
Build a monthly fuel budget from your weekly driving.
Open calculator →Eco Driving Calculator
Fuel, money and CO₂ saved by smoother driving.
Open calculator →How to get the most out of these calculators
- Use your real consumption — measure it over several fill-ups (see the Fuel Economy Tracker) instead of the manufacturer figure for accurate cost planning.
- Compare like with like — when weighing petrol vs diesel or gas vs hybrid, include the purchase price difference and servicing, not just the fuel bill.
- Budget a margin — fuel prices move; add 5–10% to your price per litre for a resilient budget.
- Eco-driving saves real money — smoother acceleration and steady speeds typically cut consumption by 10–20%, which the Fuel Saving and Eco Driving calculators quantify.