kWhCharge Cost Check

Compare your choices · Use your own rates

See your charging choices.
Act on the difference.

Compare home, public and mixed charging against fuel costs. Move one slider, find your break-even point, and save the tariffs you are considering.

No account neededPrivate, browser-based calculationsSee results ↓

Ready to see your result and matching products?

1

Start with your driving and prices

Use battery-side consumption, not a meter figure that already includes charging losses.

Starting prices are illustrative. Enter your own all-in variable prices; no tariffs or exchange rates are fetched.

2

Choose your charging mix

80%
All publicAll home
Adjust charging losses and fixed fees

The fixed fee is charged in every EV scenario, including all-home/all-public and zero-distance months. Save separate scenarios when subscriptions change. Per-session and parking fees are not modelled.

Optional: estimate one charging session

Keep your tariff alternatives side by side

Save up to three named scenarios in this browser. Changing currency changes the unit label, not the amounts.

Local only

Compare the same energy basis

Battery energy is not always the same as billed energy. The calculator makes that assumption visible, so charging losses are not silently ignored or counted twice.

Session kWh = usable battery kWh × charge-level change
Billed kWh = battery kWh ÷ billed-energy efficiency
Monthly EV cost = km ÷ 100 × blended energy cost + monthly fees

Public break-even is the per-kWh public price that matches fuel cost per 100 km, before subscriptions. AC charge time is an idealised estimate using the lower of charger power and the car’s AC limit.

Reference: ADAC: measured charging losses and variation by charging method.

Guide: when public charging stops saving money →

Assumptions that matter

Are these current electricity or fuel prices?

No. Every starting price is an illustrative input. Replace it with your own all-in tariff. The application has no live feeds, country tax engine or energy-provider database.

What about per-minute and session fees?

Convert them into an effective billed price per kWh for a representative session, or include them in the monthly extra fees. Do not count the same fee twice.

What can the time and savings estimates miss?

Charge tapering, cold-weather conditioning, varying consumption and price changes can alter real results. Annual saving simply repeats the entered month twelve times; it is not a forecast or total ownership comparison.

Your inputs stay in this browser. Calculations do not upload your data. Saving profiles, scenarios or quotes writes to local browser storage only when requested; you can remove saved copies. Backups contain your saved data and should be kept private. Optional usage measurement is off unless the operator configures it and you allow it below. Your measurement preference is stored locally when you choose it. When allowed, it records page paths and named actions, never calculator inputs, customer details or shared-plan fragments. The analytics service also receives standard browser/network information; its operator controls retention. Your host may keep access logs. Amazon suggestions are selected locally from the current calculation and your explicit choices. Optional analytics may record the catalogue product ID, storefront and placement of a viewed or clicked affiliate link, never the input values. No Amazon request is made by these cards before you click. External links open third-party sites only when clicked.