EV Charging Cost & Time Calculator
Calculate electric vehicle charging costs and duration for AC & DC chargers.
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How EV Charging Cost & Time Calculator Works
Charging cost is the energy added to the battery multiplied by your electricity price, plus the energy lost as heat in the charger and battery, which is typically around 10%. Filling 60 kWh at a home tariff of $0.30 per kWh costs 60 × 0.30 = $18 before losses, or about $20 once a 10% loss is included. A car using 17 kWh per 100 km costs about 17 × 0.30 = $5.10 per 100 km at home, compared with roughly $17 for a petrol car using 9 L/100 km at $1.90. Public fast chargers charge a higher per-kWh price, and off-peak or solar charging can cut the cost well below the standard tariff.
- Enter EV Battery Size (kWh): Input your target parameter value.
- Enter Current Battery %: Input your target parameter value.
- Enter Target Charge %: Input your target parameter value.
- Enter Charger Power Output (kW): Input your target parameter value.
- Enter Electricity Rate ($/kWh): Input your target parameter value.
- Apply Formula: Calculate using
Cost = (Battery kWh × % to Add / 0.90 Efficiency) × Tariff Rate. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
Is home EV charging cheaper than petrol?
Yes, home EV charging at $0.28/kWh costs roughly 1/3 of equivalent petrol costs per 100km.
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Authoritative Standards & Verified Reference Citations
Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
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