Enter your EV’s battery size and electricity rate to get the cost of a full charge — and the cost per mile.
What Is EV Charging Cost?
An EV charging cost calculator prices a full charge: 60 kWh × $0.15 = $9.00, or $0.03 per mile over 300 miles of range. Home charging at residential rates is the cheap case; public fast chargers often cost 2–4× more per kWh. Compare with petrol: at 30 mpg and $3.50/gallon, petrol costs $0.117/mile — about 4× the home-charged EV.
How to Use
- Enter the battery capacity in kWh.
- Enter your electricity rate per kWh.
- Enter the range per full charge.
- Click “Calculate Charging Cost”.
Formula
Full charge = battery kWh × rate. Per mile = full charge ÷ range.
Worked Example
60 kWh × $0.15 = $9.00 full charge. $9.00 ÷ 300 miles = $0.03/mile.
How It Works, In Plain Words
The tool prices electricity the way a fuel pump prices petrol: a total for the tank, then a cost per mile. Step one, the full charge: battery capacity × rate, 60 kWh × $0.15 = $9.00. The capacity is the size of the tank in energy units, and the rate is what one of those units costs where you plug in — which is why the same car costs different amounts in different places. Step two spreads that total over the range one charge buys: $9.00 ÷ 300 miles = $0.03 per mile. Per-mile is the comparison unit: it is the figure that can stand next to petrol’s $0.117 per mile from the introduction.
Two honest caveats live in the page’s text rather than in the arithmetic. The tool prices the energy that reaches the battery, while the losses FAQ notes that about 10% is lost as heat, so the metered cost runs slightly higher than the headline figure. And the rate box decides everything: enter a public fast charger’s price — 2–4× the home rate, per the cheaper-charging FAQ — and the same 60 kWh charge stops costing $9.00. The tool is currency-neutral, as the benefits list says, so the dollar signs in the examples are just the page’s chosen illustration.
Real-World Uses
A home-charging driver weighing a new electricity tariff runs the example at the new rate: the $9.00 full charge and $0.03 mile at $0.15 are the baseline any new price is judged against, in seconds. A buyer comparing an EV with the 30 mpg petrol car in the introduction sets $0.03 per mile beside $0.117 and sees the running-cost gap the page quantifies as about 4× — before thinking about purchase price, which the mistakes list rightly says a fuel-only comparison ignores. A driver planning a trip mostly on public fast chargers re-runs the tool at the charger’s rate rather than the home rate, because pricing a road trip at home prices is the first mistake on this page’s own list.
Benefits
- Full-charge and per-mile costs side by side
- Home vs public charging context in the content
- Petrol comparison included
- Currency-neutral — works with any rate
Features of Our Tool
- Instant results in your browser
- No sign-up, no download, 100% free
- Works on mobile, tablet and desktop
- Clear step-by-step explanation below the tool
- Private — your entries never leave your device
Common Mistakes
- Using the home rate for public charging — fast chargers cost 2–4× more
- Forgetting charging losses (~10% extra energy)
- Comparing with petrol using only fuel, ignoring purchase price and maintenance
Common Mistakes to Avoid
The mistakes list names the three classics: pricing public charging at the home rate when fast chargers cost 2–4× more, forgetting the ~10% charging losses, and comparing with petrol on fuel alone while ignoring purchase price and maintenance. In prose, three more. Do not invent the rate by dividing a whole electricity bill by guesswork: the rate is the price per kWh, and a wrong rate poisons both outputs at once. Do not use an optimistic range uncritically: the per-mile figure divides by the range you enter, so a flattering 300 flatters the result. And do not mix currencies mid-comparison — the tool is currency-neutral, but a per-mile cost in one currency set against petrol priced in another is meaningless.
FAQ
How much does it cost to fully charge an EV?
Battery kWh × your rate — 60 kWh at $0.15 = $9.00.
What is the cost per mile of an EV?
Full-charge cost ÷ range — $0.03/mile here.
Is home charging cheaper?
Yes — residential rates beat public fast chargers, which often cost 2–4× more per kWh.
How does it compare to petrol?
At 30 mpg and $3.50/gal, petrol is ~$0.117/mile — about 4× this EV example.
Do charging losses matter?
A little — about 10% of energy is lost as heat, so the metered cost is slightly higher.
Does the tool include charging losses?
No — it prices the energy stored in the battery: capacity × rate. The losses FAQ explains that about 10% of energy is lost as heat, so what your meter records, and what you actually pay for, runs slightly higher than the figure shown. Treat the result as the stored-energy cost, with that gap understood.
Why enter the range if the full charge only needs two numbers?
Because the second output needs it. The full charge is battery × rate — $9.00 here — but cost per mile is that total divided by the range: $9.00 ÷ 300 = $0.03. Without a range there is no per-mile figure, and per mile is the number that compares honestly with petrol’s $0.117.