EV Charging Cost Calculator

Calculate how much it costs to charge your EV from any state of charge — at home or at a public DC fast charging station.

🔌 EV Charging Cost Calculator

Battery Capacity (kWh)

Current Charge (%)

Target Charge (%)

Home Electricity Rate (per kWh)

DC Fast Charge Rate (per kWh)

Results

Energy Needed45.0 kWh

Cost at Home6.75

Cost at DC Fast18.00

💡 How to Calculate EV Charging Cost

EV charging cost = kWh needed × electricity rate. The kWh needed = battery capacity × (target % − current %) ÷ 100. For example, charging a 75 kWh battery from 20% to 80% requires 75 × 0.60 = 45 kWh.

Home charging is significantly cheaper than public fast charging. Enter your local home electricity rate and DC fast charging rate for accurate comparison. In most regions, home charging costs 2–3× less than public fast chargers.

Charging a 75 kWh battery from 20% to 80% (45 kWh needed): at home rate of 0.15/kWh costs 6.75. At DC fast rate of 0.40/kWh costs 18.00. Home charging saves over 11 per session.