Estimate electric car home charging electricity use and monthly cost.
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EV Car Charging Cost
Plan home EV charging load and bill impact.
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Input Details
Fill what you know. If a value is unknown, keep the practical default and verify the nameplate later.
How much does it cost to charge an electric car at home?
Short answer: Cost per full charge = battery kWh ÷ charging efficiency (about 0.9) × your tariff. A 30 kWh battery takes about 33 units, roughly ₹267 at ₹8/kWh in India, or about $6.11 at the US average of 18.3¢/kWh. Most EVs use 0.13–0.20 kWh per km (about 3–4.5 miles per kWh).
Full-charge home cost (0–100%, 90% efficiency)
Battery
Units from wall
India cost (8 INR/kWh)
US cost (18.3¢/kWh, EIA)
30 kWh
33
₹267
$6.04
40 kWh
44
₹356
$8.06
60 kWh
67
₹533
$12.27
75 kWh
83
₹667
$15.20
Tip: Charging at a time-of-use off-peak rate can reduce the home charging cost by 20–50% where such tariffs exist.
Using this calculator outside India? Outside India? Pick your currency at the top of the page and enter the per-kWh rate printed on your bill. Typical residential averages: USA 18.3¢/kWh (EIA, July 2026; California 33.6¢, Texas 15.9¢), UK about £0.25/kWh, Germany about €0.38/kWh, UAE about AED 0.23–0.38/kWh, Canada about C$0.13–0.20/kWh and Australia about A$0.30–0.35/kWh. The kWh result is the same in every country; only the cost changes.
By Harshad Kumar Sharma · Last reviewed · Method: kWh = watts × hours × days ÷ 1,000
Use this to estimate how much home EV car charging can add to your monthly bill. Track EV charging separately for cleaner planning.
This is a preliminary planning estimate. For certified audits, use site measurement and nameplate readings.
FAQ
What is the cost per km of an electric car?
Multiply the car's kWh per km (typically 0.13–0.20) by your tariff. At ₹8 per kWh that is about ₹1.0–1.6 per km in India; at the US average of 18.3¢ per kWh it is about 4–6 cents per mile.
Is this result exact?
It is an engineering estimate using user inputs. Exact result needs actual meter/nameplate data.
Can I use it for audit report?
Yes, as a preliminary calculation and supporting estimate.
EV planning tip
Home EV charging can become one of the top loads. If available, check time-of-day tariff and solar pairing.
Accuracy note
The result is a planning estimate. Use nameplate wattage, measured runtime and current tariff for professional-level accuracy.