How much do I need, and what will it cost me?

Small calculators for home and car questions. We work out the quantity from facts checked against two independent publishers; you type your own price, and the calculator multiplies it in your browser.

Cost to charge an electric car How we check

Calculators

EV chargingHow much does it cost to charge an electric car?Miles x the car's kWh per 100 miles gives the energy; your own rate per kWh gives the cost. A calculator with EPA figures for five popular cars, and Level 1 and Level 2 charging times.

More calculators are being checked, one fact at a time, before they go up.

Why we never write a price

A price on a web page is out of date the week it is published, and it is rarely the price in your store, your town or your utility plan. So we split every question in two. The quantity part does not change from store to store: how many kWh for 100 miles, how many gallons for a room. We check it against two publishers and give the source. The money part is yours: type the price from your bill or your store, and the calculator does the multiplication on your device. Nothing you type is sent to us.

How we work

Every fact rests on two independent publishers and is numbered to its sources. Read how we check.