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The distance you drive.
Enter the cost of fuel per litre in pence.
Prices vary by location and fuel grade. Check current prices
How many miles your car travels per gallon of fuel.
Any payments for your current car (finance, lease, etc.).
Insurance cost for your current car.
Costs vary by age, location, driving history, and car value. Compare quotes
Average cost for servicing your current car.
How many miles your EV travels per kWh of electricity. Find the data on EV Database.
Convert between different efficiency units:
Formula: 1000 ÷ Wh/mile = miles/kWh
Example: 285 Wh/mile = 1000 ÷ 285 = 3.51 miles/kWh
Any payments for the EV (finance, lease, etc.).
Insurance cost for the EV.
EV insurance can be higher due to repair costs, but some insurers offer discounts for EVs. Compare EV insurance
Average cost for servicing the EV.
Road tax cost for the EV. Calculator below accurate when written 14 Aug 2025.
Enter the cost per kWh during peak hours.
Rates vary by supplier and tariff. Check your energy bill or supplier website. Check price cap
Check this box if you have access to a cheaper electricity rate during off-peak hours.
If you will regularly use public charging facilities, enter the average price per kWh you expect to pay, here.
Prices vary by network and location. Some networks offer subscription discounts. Find chargers near you
Tick this box if you have solar panels and want to factor these into your calculations.