Frequently asked questions

General questions about the site. Each calculator also has its own FAQ on its own page.

What is Save Range?

A free set of calculators for electric-car owners — real-world range, how much to charge and battery care — plus a cost comparison against petrol, diesel and LPG for anyone weighing an EV.

Are the calculators free?

Yes, completely free and with no sign-up. Everything runs in your browser.

Where do the default numbers come from?

From public vehicle specifications and typical regional prices. They're sensible starting points, not exact figures for any single car — every input is editable, so you can match your own vehicle and energy prices.

How accurate are the results?

They're estimates. Real range and running costs depend on weather, driving style, terrain and the exact prices you pay. Treat the numbers as a well-informed guide, not a guarantee — and edit the inputs to reflect your situation.

Do you store what I enter?

No. Your car choice and price tweaks are saved only in your browser's local storage so the calculators remember them; nothing is sent to us. See the privacy policy for details.

Why are prices shown for a specific country?

Each region preset fills in typical local electricity and fuel prices with the right currency and units. Switch region with the selector in the header, or just edit the prices directly.