Editorial process
Dated source researchRecorded manual reviewSeparate English, German and Dutch QACorrections and source expiry monitored
Skip to content
EV Charger Directory

EV charging cost calculator

Calculate one charging session from usable battery capacity and charge levels, or enter measured grid kWh without applying losses twice.

Country and language are separate controls. The tariff is an editable, dated domestic example—not a public charging price or your personal rate.

Scenario country

Changing language does not change the selected country, currency, source or assumptions. Any narrower tariff-source scope is stated beside the example.

Energy input for this session

60 kWh
20 kWh120 kWh
20 %
0 %90 %
80 %
10 %100 %
85 %
50 %100 %

85% is an editable EU modelling assumption, not a measurement of your car.

GBP/kWh

Replace the dated domestic example with the full per-kWh rate for your tariff or public operator.

GBP

Enter only a fee caused by this session. Do not add a domestic standing charge you already pay regardless of charging.

Your scenario

£11.06
Estimated session total
energy plus the fee you entered
£11.06
Variable energy cost
grid kWh multiplied by tariff
42.35 kWh
Energy bought from the grid
calculated from battery energy and efficiency
36 kWh
Energy added to the battery
usable capacity multiplied by charge-level change
£0.00
Entered session fee
zero unless this session creates the fee

⚠ This is a planning estimate, not a bill or savings promise. It excludes installation, connection work, parking, time-based fees and every cost you do not enter.

Formula, tariff snapshot and limits

For battery mode, the tool calculates energy added from usable capacity and the charge-level change, then converts it to grid energy with the selected efficiency. Meter mode uses measured grid kWh directly, so losses are not applied twice.

Ebattery = Cusable × ΔSOC · Egrid = Ebattery ÷ η · Csession = Egrid × pkWh + Fincremental

Official domestic tariff example

Current within its stated period · £0.2611/kWh · 2026-Q3 · Ofgem

Great Britain standard-variable direct-debit average; not Northern Ireland, a fixed tariff or public charging.

Energy price cap unit rates and standing charges

Default review/expiry date: 30 Sept 2026

Reproducible example: 60 kWh usable, 20% to 80% and 85% efficiency gives 36 kWh in the battery and 42.35 kWh from the grid. At the dated Great Britain example rate, variable energy costs £11.06.

  • There is no single national public price; enter the operator rate and any incremental fee you actually pay.
  • Existing domestic standing charges and installation costs are excluded; enter only a new fee caused by this session.
  • The result does not compare tariffs or promise that home or public charging is cheaper.

Methodology reviewed: 24 Aug 2026

Check the charging time behind the energy

Use the same visible efficiency assumption to estimate a constant-power AC charging session.

Open the charging-time estimator →