Convert fuel consumption instantly — type a value, pick your units, and every other common unit updates live below. 100% free, runs entirely in your browser, no sign-up.
Every unit below updates live from the value you enter in the "From" field above.
MPG and km/L both measure distance covered per unit of fuel, so a higher number means better efficiency in both — but L/100km measures the opposite way, fuel used per fixed distance, so a lower number is better there. That flip is why this is the one converter on this page where one unit (L/100km) uses a divide-based formula instead of a straight multiply — mixing the two without converting first is a common source of fuel-efficiency mix-ups.
Yes. It's completely free with no sign-up, and every conversion runs locally in your browser via JavaScript — the numbers you type are never sent to our servers.
Each unit uses its standard, internationally defined conversion factor, calculated in full precision and only rounded for display. Results are accurate to at least 6 significant figures.
This page intentionally covers the most commonly used fuel consumption units rather than an exhaustive engineering list. Use the suggestion button in the bottom-right corner of any page to request a unit and we'll consider adding it.
Tell us what to improve or which tool to add next.
