About ChargeMath

ChargeMath was created to do one thing well: give EV owners and future EV buyers fast, accurate answers to everyday EV math — without sign-ups, downloads or clutter.

Every calculator on this site runs entirely in your web browser. There is nothing to install, it works just as well on a phone next to the charging port as on a computer at home, and the numbers you enter never leave your device.

A growing toolbox

The site starts with the questions every EV owner runs into — how much will a charge cost, how far can I go, how long will it take to charge, will I really save money over a gas car — and the collection keeps growing. Each tool comes with a plain-language explanation of the numbers behind it.

Accuracy

We work hard to keep these calculators correct, but they are intended for planning and estimation. Real-world EV performance varies with temperature, driving style, terrain and battery age, so always verify critical numbers yourself and consult a qualified electrician for any electrical work.

Suggestions welcome

Have an idea for a calculator we should add, or spotted a mistake? We would genuinely like to hear about it — please get in touch through our contact page.