Automotive · Free tool

EV Charging Cost Calculator

Home charging vs DC fast charging cost and time. Comparison to 30 MPG gas car at $3.50/gal.

Updated April 2026

Battery size (kWh)Current battery %Home target %Fast-charge target %Home efficiency %DC fast efficiency %Home rate ($/kWh)Fast-charger rate ($/kWh)

Home (Level 2)

$11.33

60.0 kWh delivered · 66.7 kWh drawn

Time: 8 hr 34 min @ 7 kW

$0.05/mi · ~210 mi added

DC fast charging

$20.37

45.0 kWh delivered · 47.4 kWh drawn

Time: 18 min @ 150 kW

$0.13/mi · ~158 mi added

Comparable gas car (30 MPG at $3.50/gal)

$0.12/mi

Home charging saves $0.06/mi — fast charging saves $0.00/mi.

Time estimates assume sustained rates. Real DC fast charging tapers above 80% — that’s why most road-trip stops cap at 80%. Home charging loss (~10%) comes from AC-to-DC conversion; DC fast is more efficient but grid demand charges raise the per-kWh price.

Found this useful?Email

What it does

Home level 2 vs Tesla Supercharger: which costs more per mile, and how long does each take to hit 80%? With a comparison to a 30 MPG gas car.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

Embed this tool on your siteShow snippet

Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/ev-charging-cost-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="EV Charging Cost Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

Embed docs →

How to use it

Enter battery size + target %.
Enter home and fast rates.
Read cost + time for each.