Calculator

Calculate fuel mileage from your latest fill-up

Use the distance between odometer readings and the amount of fuel added to estimate MPG and L/100 km. Save the result with each fill-up so trends are easier to spot over time.

Job to be done

Work out fuel economy after a fill-up and decide whether a car is using more fuel than usual.

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Fuel mileage calculator

Enter two odometer readings and fuel added. The calculator shows distance, MPG, and L/100 km without storing anything.

Distance

388.0 miles

Fuel economy

32.61 MPG

Consumption

7.21 L/100 km

  • Supports miles, kilometers, gallons, and liters.
  • Works best when the tank is filled to the same level each time.
  • Use the result as a quick check before logging the fill-up.
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Keep the useful record after the calculation or template.

Vehtraq turns one-off worksheets into vehicle records you can filter, review, and export. Fuel logs, service history, reminders, receipts, and costs stay attached to the vehicle they belong to.

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Vehtraq dashboard showing vehicle records and cost charts

What to record at the pump

A useful fuel mileage record needs a few consistent fields. The exact station or notes are optional, but odometer and quantity are what make the math reliable.

  • Current odometer reading
  • Fuel quantity added
  • Fuel type
  • Whether the tank was filled
  • Station or location if you compare suppliers

How Vehtraq helps after the calculation

One result is useful, but the pattern matters more. Vehtraq connects fill-ups to vehicle history so unusual consumption is easier to notice.

  • Store each fill-up against the correct vehicle
  • Review gas mileage trends by date and odometer
  • Keep fuel records beside service and repair history