Ev Cost Per 100km
Calculator

Inputs

Cost per 100 km
3.74

Results

Cost per 100 km
3.74
Cost per km
0.0374
Energy used (kWh)
17
Trip fuel cost
3.74

Results

Cost per 100 km3.74
Cost per km0.0374
Energy used (kWh)17
Trip fuel cost3.74

formula-map diagram

Cost per 100 km
3.74
Cost per km
0.0374
Energy used (kWh)
17
Trip fuel cost
3.74

Formula breakdown

Formula

cost/100 km = kWh/100 km × price per kWh

= 3.74

Note

Simplified model: results use idealised textbook relationships and ignore real-world factors such as driving style, load, temperature, aerodynamic and rolling losses, drivetrain efficiency, tyre and brake condition and road surface. CO2 figures are tailpipe only, based on the standard 2.31 kg CO2 per litre of petrol (2.68 kg per litre of diesel), and exclude fuel production and distribution. Use them as estimates, not as legal, safety or load-rating figures.

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Frequently asked questions

What does this calculator compute and what inputs does it need?+

It estimates the cost of driving an electric vehicle 100 kilometers, based on the vehicle's energy consumption rate (kWh per 100km) and your electricity price per kWh. The calculation is simply consumption rate multiplied by price per kWh.

How is EV cost per 100km calculated?+

Cost per 100km = energy consumption (kWh/100km) × price per kWh. For example, a vehicle consuming 18 kWh/100km on electricity priced at $0.15/kWh costs $2.70 to drive 100 km.

Why does actual EV energy consumption vary so much from the rated figure?+

Real-world consumption is affected by driving speed (highway speeds increase aerodynamic drag and consumption notably), outside temperature (cold weather increases consumption due to battery inefficiency and cabin heating), terrain, and driving style, often causing real consumption to differ meaningfully from the window-sticker or manufacturer rating.

What's a common misconception when comparing EV cost per 100km to a gasoline car's fuel cost?+

People sometimes compare only the per-distance energy cost without accounting for the different pricing structures — home charging is often much cheaper per kWh than public fast charging, so an EV's real cost per 100km can vary substantially depending on where and how it's charged, unlike gasoline, which has more uniform pricing at the pump.

Does this calculation include charging losses?+

Not unless the consumption figure you enter already accounts for them — charging isn't 100% efficient, so some energy drawn from the wall (or charger) is lost as heat and never reaches the battery. Using a 'wall-to-wheel' consumption figure rather than the vehicle's onboard trip computer figure gives a more accurate real cost.