EV Range & Charging Calculator

Calculate real-world EV range and compare home vs public charging costs.

Battery capacity (kWh)

Real-world efficiency (miles/kWh)

Home electricity rate (p/kWh)

Journey distance (miles)

🔋

Fill in the details to get your result.

How This Works

Usable battery = 90% of total (EVs reserve 5–10% for battery health). Range = usable kWh × miles per kWh efficiency. Journey cost = (miles ÷ efficiency) × electricity rate. Petrol comparison uses UK average ~147p/litre and 40 MPG.

Cold temperatures reduce battery chemistry efficiency and cabin heating uses battery energy (unlike petrol where engine waste heat is free). Expect 20–35% range reduction below 5°C. Preconditioning the cabin while plugged in minimises this impact.