Convert Canadian pump prices ($/litre, CAD) to American pump prices ($/gallon, USD) at today's exchange rate, and translate L/100km into MPG.
Gas prices are hard to compare across the border: Canada prices fuel in Canadian dollars per litre, the US in US dollars per gallon: different currency and different unit at the same time. This tool does both conversions in one step using a live exchange rate, and also translates fuel economy between L/100km (used in Canada) and MPG (used in the US), so you can compare pump prices and vehicle efficiency on equal footing.
USD per gallon = CAD per litre × litres per gallon ÷ exchange rate, where the exchange rate is how many Canadian dollars one US dollar buys. Both the unit (litre → gallon) and the currency (CAD → USD) have to be converted, which is why a quick mental estimate is usually wrong.
A US gallon is 3.785 litres; an Imperial (UK/older Canadian) gallon is 4.546 litres, about 20% larger. US pump prices and window-sticker MPG always use US gallons. Use the toggle to switch.
They're inverse measures: lower L/100km is better, higher MPG is better. MPG (US) = 235.215 ÷ L/100km. For example, 8.0 L/100km is roughly 29 MPG (US).
It loads from the Frankfurter API (European Central Bank reference rates) with a fallback source. It's a daily reference rate, not the retail rate your card charges, and you can type in your own rate at any time.