1. Confirm the route before calculating
A road distance is not the same thing as the distance in a straight line. Choose both ends on a map and check the route result, especially if hills, bridges, restricted roads or ferries may change the journey. If an online route cannot be confirmed, use a road distance you verified independently.
2. Enter actual consumption
For a petrol or diesel vehicle, estimate litres used as trip distance in kilometres divided by your measured kilometres per litre. For example, a 210 km road trip at 14 km/L uses about 15 litres. For an EV, multiply distance by the kWh per 100 km and divide by 100. A 210 km trip at 18 kWh/100 km uses about 37.8 kWh before charging losses.
3. Add local prices and extras
Multiply energy used by the local fuel or charging price you enter. Add tolls, parking or known additional charges. Check whether the journey is one-way or a round trip. Prices differ by date, region and charging network; the calculator does not claim to fetch live fuel prices.
4. Interpret the result
Traffic, air-conditioning, weather, load, tyre pressure and driving style may change real-world energy use. Treat the output as a planning estimate rather than a receipt. Save or compare the result against your vehicle’s actual fuel records after the journey.
Use this information responsibly
These guides explain planning methods and basic checks. They are not a substitute for vehicle manufacturer instructions, mechanic inspection, local road regulations or a verified market valuation. Review any advice against your specific vehicle and local conditions.