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Vehicle Monthly Fuel Cost from Miles and MPG Calculator

How much you spend on fuel each month based on your driving.

Estimates monthly and annual fuel cost: monthly cost = (monthly miles / MPG) × price per gallon. Also converts between MPG and L/100 km.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

mi
mpg
$

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Cost = (miles / MPG) × price_per_gal

In depth

Estimates monthly and annual fuel cost: monthly cost = (monthly miles / MPG) × price per gallon. Also converts between MPG and L/100 km.