About the EV Efficiency Calculator
Electric car efficiency in kWh/100km, miles per kWh and MPGe from a real journey.
Also known as: miles per kwh calculator, mpge calculator, ev consumption, electric car efficiency.
How to use this calculator
- Enter distance travelled, energy used.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
kWh/100km = energy used ÷ distance × 100
Worked example
Using the values pre-filled in the calculator above:
- Distance travelled = 250 km
- Energy used = 45 kWh
the calculator returns:
- Efficiency: 18 kWh/100km
- Miles per kWh: 3.452
- km per kWh: 5.556
- MPGe: 116.4