Cost per Mile Calculator
Calculate driving cost per mile and kilometer from fuel economy, price and added cost per km.
Formula
Fuel/km = (L/100 km) × price ÷ (100 × priced liters); total/mi = (fuel/km + extra/km) × 1.609344.
Fuel economy: 30 mpg (US) · Fuel volume covered by price: 1 US gal · Fuel cost per km ≈ (235.214583 L/100 km·mpg (US) ÷ 30 mpg (US))×(3.5)÷(100×(1 US gal × 3.785411784 L/US gal)) · Fuel cost per mile ≈ (0.07249330566)×1.609344 · Combined cost per km ≈ (0.07249330566)+(0) · Combined cost per mile ≈ (0.07249330566)×1.609344
How to use
- Enter fuel economy and the price for a stated fuel volume.
- Enter extra cost per km in the same currency, or leave zero.
- Read fuel-only and combined costs per mile and km.
Examples
- At 25 US mpg and 3.50 per US gallon, fuel costs 0.14 per mile.
Frequently asked questions
Is the price current?
No. Defaults are examples; enter your own fuel price.
Which gallon is used?
US and imperial gallons are separate options; match the price volume and economy units.
Does this include all ownership costs?
Only fuel and the extra cost you enter. Insurance, depreciation and taxes are not added automatically.
Sources
Updated: