Electric Vehicle Calculator
EV Charging Cost Calculator
See exactly what it costs to top up your EV — per session, per full charge, and per mile — so you can compare home charging to public stations and to the price of gas.
Charging Details
US home average ≈ $0.16. DC fast chargers often $0.35–$0.60.
Energy lost as heat during charging. ~90% for AC home charging.
Cost of This Charge
40 kWh drawn from the wall
Energy Added to Battery
36 kWh
Full 0–100% Charge
$10.67
Cost per Mile
$0.05
Range Added
126 mi
Gas equivalent
At this cost per mile, you're paying like a gas car that gets 70 MPG (assuming $3.50/gal gas).
How it works.
Frequently asked questions.
Is it cheaper to charge at home or at a public station?
Home charging is almost always cheaper — often 3–4× less than DC fast charging. Fast chargers charge a premium for speed. Use public fast charging for road trips and home (or workplace) charging for everyday driving.
What is charging efficiency and why does it matter?
Some energy is lost as heat between the wall and the battery. AC home charging is roughly 85–92% efficient, so you pay for a bit more electricity than actually reaches the battery. The calculator accounts for this so your cost reflects what the meter reads.
Why charge only to 80%?
Regularly charging a lithium-ion battery to 100% can accelerate long-term degradation. Many manufacturers recommend an 80% daily limit and saving 100% for trips. That is why 20–80% is the default range here.