EV Running Cost Calculator
Estimate an electric vehicle’s energy running cost from consumption, electricity rate, and monthly driving distance.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
EV Running Cost Calculator
Cost per Kilometre and Monthly Electricity Cost
📐 Formula & Method
EV Running Cost
The result covers traction electricity only, not insurance, finance, depreciation, maintenance, or charging losses.
📋 How to Use
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1
Enter vehicle energy consumption.
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2
Enter your electricity price per kWh.
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3
Enter monthly driving distance.
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4
Calculate unit and monthly energy costs.
Comparing EV Energy Costs
For a fair comparison, use your weighted average electricity rate if you mix home and public charging. This calculator isolates energy cost so it can be compared with petrol or diesel fuel expense.
🔬 Methodology & Accuracy
Formula: Uses the standard mathematical formula shown in the Formula & Method section above. All computations run client-side in your browser — no data is sent to our servers.
Data sources: Tax bands, contribution limits and regulatory rates are taken from official US (IRS, SSA) and UK (HMRC, gov.uk) publications for the current tax year, and updated when bands change.
Last reviewed: June 2026 · General formula used: EV Running Cost · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.