Local-first calculator

Wattrix calculator

Four tools over one car profile. Everything recalculates as you type, and nothing leaves this browser.

Your car

Loaded: Custom vehicle

Usable battery (kWh)

Usable, not gross - it is normally a few kWh less.

Consumption

Your own long-term average beats any spec sheet.

Peak DC charging (kW)

Onboard AC charger (kW)

Distance

Charge each stop to (%)

80% is the sweet spot on DC.

Starting charge (%)

Reserve you keep (%)

Charge point power (kW)

Type

Price per kWh

Charging losses (%)

Roughly 5% on DC, 11% on AC.

Outside temperature 15°C

Cold costs range twice over: the pack holds less and the cabin needs heating.

How you are driving

What you are carrying

Winter tyresAdds about 5% to consumption.

live

Energy

Time

Cost

Estimates. Wind, traffic, hills, cell temperature and charger sharing all move the real number. Keep your reserve.