Gas cost calculator
Enter your miles and MPG to estimate gas costs for a road trip or fill-up. Choose any US state, compare the same drive in dollars, or switch to metric units for an international trip. Prices are averages with their source dates shown.
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300 miles in United States · 10.71 US gal
$43.62
≈ €37.56
National average · 2026-08-31 · Weekly retail gasoline and diesel prices.
Estimated fuel cost. Individual stations and actual driving consumption will vary.
Comparison rows exclude overdue data. US state comparisons use AAA averages dated 2026-09-09; the US national baseline is EIA weekly data dated 2026-08-31.
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Not sure what your car actually does? Work out your real MPG from your last fill-up →