Free Calculators
EV Charging Tools
Six free, no-signup tools that answer the questions every EV owner needs to solve before — and after — bringing home a new electric vehicle. From checking whether your electrical panel has the headroom for a Level 2 charger to calculating exactly how much you'll spend on home charging each year, every tool is built on the same engineering standards and code references your electrician uses.
Panel Capacity Checker
Find out if your electrical panel can handle a Level 2 EV charger — using the NEC 220.82 method.
EV Charging Cost Calculator
Calculate exactly how much it costs to charge your EV at home per month, per mile, and per year.
EV Charging Time Calculator
See how long it takes to charge your EV from any state of charge to any target, at any charger speed.
Panel Upgrade Cost Estimator
Get a realistic cost range for upgrading your electrical panel from 100A to 200A or 200A to 400A.
Solar Offset for EV Calculator
See how many solar panels you'd need to cover all your EV charging — and how fast they'd pay back.
Charger Amperage Comparison
Compare 32A, 40A, and 48A EV chargers side-by-side: speed, cost, panel impact, and which to buy.
Not sure which tool to start with?
Most EV owners start with the Panel Capacity Checker. Knowing whether your electrical panel can handle a Level 2 charger determines everything else — from which charger to buy to whether you need an electrician before your car even arrives.
Start with Panel Capacity