Tools

EV charging calculators and tools

Free calculators and selectors for charging time, cost, cables and installation. Every result explains the formula behind it.

Choose the question you want answered

Start with a sensible default, then adjust the figures to match your car, home supply and driving.

Read the charging guides
ToolsWhat amperage should you charge your EV at?Compare typical EV charging current settings by socket type, with estimated power and range. Confirm the real limit for your installation before use.Current to verify · charging powerToolsWhich Type 2 charging cable do I need?Pick the right Type 2 charging cable: the amp rating and number of phases for your car's power, and the length for where you park.Cable rating · practical lengthToolsEV charging cost calculatorWhat does it cost to charge your electric car at home? Enter your electricity price and get the cost per charge, per 100 km and per kilometre.Charge cost · cost per 100 kmToolsCharging power calculator: amps to kWConvert amps, phases and voltage into EV charging power in kW, capped by your car's onboard charger, with the range added per hour.Usable kW · range per hourToolsEV charging time calculatorHow long will your electric car take to charge at home? Enter battery size, charge level and charger power to get the time, energy and range added per hour.Charging time · energy addedToolsEV electricity tariff comparison calculatorCompare a flat electricity plan with an off-peak EV tariff using your mileage, consumption, charging losses, rates and annual fees.Annual plan cost · cheaper tariffToolsEV road-trip charging stops estimatorEstimate charging stops, added energy and charging time from trip distance, usable battery, consumption, charge targets and average DC power.Charging stops · time estimateToolsEV vs petrol running-cost calculatorCompare the running cost of an electric car and a petrol car. Enter your prices and mileage to see the cost per 100 km and the yearly difference.Annual energy cost · cost differenceToolsHome EV charging schedule plannerWork out when to start charging so your EV reaches its target before departure, with charger limits, losses and wall energy included.Latest start time · energy neededToolsShared EV charging capacity plannerEstimate daily energy and charging sessions for an apartment or workplace from the site's EV power budget, ports and expected use.Daily sessions · shared powerToolsSolar EV charging coverage calculatorEstimate how much of your weekly EV charging could be covered by usable solar surplus and how much grid energy would remain.Solar coverage · grid energy needed