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Car running cost calculator

Enter what you pay for your car, each item with its period, to see its running costs per month and per year, and the cost per kilometre if you add the distance. No account needed, and your figures go nowhere.

Enter the amounts in one currency. Leave a field empty if you do not know the amount yet, and type 0 if you have no such cost: an empty field does not count as zero, and the result stays incomplete until every item is filled in.

Currency

The calculator converts nothing: the currency is a label shown next to the amounts.

What you pay for fuel in a typical month.

What you pay for routine maintenance, such as oil and filter changes. Enter the amount and choose its period.

This amount is

Your yearly insurance premium as it is. The calculator divides it by 12 for its monthly share.

The yearly fees to renew the car's registration and inspection.

Paid parking and road toll gates in a typical month.

Any other running cost you want to include, such as car washes. Enter the amount and choose its period.

This amount is

Used only for the cost per kilometre.

Enter at least one amount to see the result.

How it is calculated

The calculator adds up only what you enter. It adds no prices or maintenance intervals of its own.

  1. A monthly cost counts as it is.
  2. A yearly cost is divided by 12 to give its monthly equivalent. A yearly insurance premium of 2,400 adds 200 to the month; the whole yearly amount is never added to a single month.
  3. Monthly total = the monthly items + the yearly items ÷ 12.
  4. Yearly total = the monthly total × 12.
  5. Cost per kilometre = the monthly total ÷ the monthly distance, worked out only when the distance is above zero.
  6. An empty field means you have not entered it, not that it is zero. While a field is empty, the result says it is incomplete and names the item.
  7. The calculator accepts Arabic and Western digits and commas between thousands, and refuses negative values.
  8. The amounts shown are rounded to two decimals; the calculation itself is not rounded.
Illustrative data

An arithmetic example, not an average price. The other items in it are zero.

Fuel
500 per month
Maintenance
1,200 per year, so 100 per month
Insurance
2,400 per year, so 200 per month
Parking and tolls
300 per month
Monthly total
500 + 100 + 200 + 300 = 1,100
Yearly total
1,100 × 12 = 13,200
Cost per kilometre at 1,000 km a month
1,100 ÷ 1,000 = 1.10

What the result includes

Only the items you enter: fuel, maintenance, insurance, registration and inspection, parking and tolls, and anything you add under "Other costs".

What the result leaves out

  • Depreciation: the car losing value over time.
  • Financing: loan instalments and interest.
  • The purchase price and the down payment.
  • Unexpected repairs, unless you enter them under "Other costs".
  • Any cost you have not entered.

So the result is a running cost, not the total cost of owning the car.

Where do your figures go?

The calculation runs in your browser. The figures you enter are not sent to Motorak's servers or to any measurement tool, they are not saved, and you need no account.

Related

Track your real expenses in Motorak

The calculator is an estimate from figures you enter once. In Motorak you log each expense with its date, and see the month's total and its breakdown by category.

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How expenses work in Motorak