Estimate trip fuel use and cost from distance, economy, and local price.
Reviewed: 2026-07-21
Accept distance in km or mi, calculate fuel use from L/100km, US MPG, or Imperial MPG, then multiply by the price entered for the matching volume unit. US and Imperial gallons are treated separately, while the selected currency only labels the result and no live exchange rate is applied. Inputs stay in the browser, and actual cost can vary with traffic, roads, idling, load, vehicle condition, and price changes.
Check input units and reference dates first. For an important decision, compare the result with an official source or original document. A rounded display can differ slightly from the underlying value.
Multiply trip distance in kilometers by the L/100km value, then divide by 100. A 300 km trip at 8 L/100km uses about 24 liters.
No. US and Imperial gallons have different volumes, so the same vehicle has different numerical ratings. Enter price per gallon for the selected convention.
No. Currency selection changes only the symbol and number formatting. Enter the actual local fuel price already denominated in that currency.