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Home Calculators

Car costs, electricity consumption and household expenses.

TheCalculator's home calculators let you break down and control the two biggest variable day-to-day expenses: your car and your electricity. Knowing the true annual cost of your vehicle—adding fuel, insurance, maintenance, taxes and depreciation—or understanding which appliances are driving up your electricity bill are the starting point for making genuine savings decisions based on real data.

The value of these tools lies in turning vague expenses into concrete figures. Most drivers underestimate what their car costs them because they only count fuel, and very few households know what share of their electricity bill goes on a single appliance. Putting numbers on the table is what lets you judge sensibly whether changing vehicle pays off, whether replacing an old appliance is worthwhile, or whether shifting certain consumption to off-peak hours makes an appreciable saving by year end.

Annual Car Cost Calculator
Calculate the real annual cost of owning your car.
Electricity Consumption Calculator
Estimate your electricity bill and find out what consumes most.
Home Renovation Budget Calculator
Estimate your renovation cost by item: flooring, bathroom, kitchen, windows and more.

Frequently asked questions

The total annual cost of a mid-range car in Spain ranges from €4,000 to €7,000 once you add fuel, insurance, roadworthiness test, services, tyres and local taxes. Depreciation is usually the largest but most invisible item: a €20,000 car with a 10-year useful life represents €2,000 per year just from the passage of time.

The biggest consumers in a typical Spanish home are the electric water heater (1,500–2,500 W), the oven (2,000–3,500 W), the air conditioning unit (1,000–3,000 W depending on capacity) and the tumble dryer (2,000–3,000 W). The fridge, although always on, is usually more efficient thanks to compressor cycles. Check the energy label on each appliance and use the calculator to estimate the real monthly cost.

At least once a year, and whenever a relevant condition changes. Fuel and kilowatt-hour prices fluctuate considerably over the year, and insurance premiums renew annually, often with increases that go unnoticed if you pay by direct debit. An annual review with updated prices lets you spot deviations and decide whether to switch provider, adjust your contracted power or review consumption habits before the extra cost becomes entrenched.

No, and this is important to bear in mind. The car cost calculator focuses on the running costs you pay each month: fuel, insurance, maintenance, taxes and parking. Depreciation — the vehicle's loss of value over time — is not paid monthly but is usually the biggest real cost of car ownership: a new car loses around 20-25% of its value in the first year. If you want the total cost of ownership, add the estimated annual depreciation to the result you obtain.

The default values are indicative averages for the Spanish market, taken from public sources such as OCU and DGT reports for motoring costs and average electricity market prices for the kilowatt-hour. They are intended as a starting point when you do not know your exact figures, but the result will be far more useful if you replace them with your real data: the average consumption shown by your car's trip computer and the kWh price on your latest bill.