Fuel Consumption Converter
Use this free Fuel Consumption Converter to quickly get accurate results in seconds, free and instantly offline with no signup required ever, trusted by professionals in Austin, Chicago, Miami, Denver, Seattle, and New York for reliable daily use without accounts, subscriptions, limits, or delays on any device for everyday personal and business workflows daily.
Convert fuel economy between MPG, km/L, and L/100km with this free fuel consumption converter for drivers and travelers.
Calculator Inputs
About MPG / L/100km
Use this free Fuel Consumption Converter to quickly get accurate results in seconds, free and instantly offline with no signup required ever, trusted by professionals in Austin, Chicago, Miami, Denver, Seattle, and New York for reliable daily use without accounts, subscriptions, limits, or delays on any device for everyday personal and business workflows daily.
MPG distance/fuel vs L/100km fuel/distance invert — bigger better vs worse. Pivots L/100km shows 4.
UK gallon 20% larger inflates UK MPG. Real 10-20% worse than lab. Local.
USA: F-150 20 MPG =11.76 L, Prius 52 MPG =4.52 L.
Honest: L/100km linear cost. 10→20 saves more than 30→40 MPG.
Limits: Ratings lab, not towing.
Sedan shopping: Austin commuters comparing $35,000 sedans translate window stickers to annual fuel bills directly. Seattle couriers running $900 weekly routes pick vehicles by L/100km honesty on 09/22/2026.
Fleet specs: Chicago fleets specing $2M van orders model lifetime fuel per 100 km, not badge MPG. Miami importers pricing $28,000 Hilux builds convert Euro specs for US buyers.
UK-gallon trap: Imperial gallons run 20 percent larger — same car reads higher UK MPG. Denver skiers budgeting $600 drives convert UK reviews before comparing.
Hybrid math: F-150 20 MPG burns 11.76 L/100km while Prius 52 sips 4.52 — the absolute gap matters more than ratios. New York cabbies tracking $400 shift fuel feel every liter.
Lab versus real: Ratings run 10 to 20 percent optimistic; towing and winter widen gaps further. Budget with margins.
Where it is used
Buyers reading Euro reviews, importers comparing Hilux, fleets specing vans, road-trippers budgeting gas, and debating F-150 vs Prius Austin commuters compare $35,000 sedans, Chicago fleets spec $2M van orders, Miami importers price $28,000 Hilux builds, Denver skiers budget $600 resort drives, Seattle couriers run $900 weekly routes, and New York cabbies track $400 shift fuel.
How to use the MPG / L/100km
- Value — enter the value (e.g. 30).
- From — enter the value.
- Calculate — press the Calculate button to see the result instantly above.
Formula
to L/100km: US 235.214/v, UK 282.481/v, kml 100/v → back US 235.214/L, UK 282.481/L, kml 100/L.
Examples
Sedan 30 MPG
Prius 52 MPG
Euro 6L
Frequently Asked Questions
- Why do UK MPG figures look better?
- The imperial gallon (4.546 L) is bigger than the US gallon (3.785 L). Same car, same driving: the UK number reads ~20% higher.
- MPG or L/100km — which is more honest?
- L/100km. MPG hides absolute savings: improving 10→20 MPG saves far more fuel than 30→40, but MPG gaps look equal. L/100km scales linearly with cost.
- How do I convert to km per liter?
- Divide 100 by the L/100km figure. 7.84 L/100km ≈ 12.76 km/L.
- Towing economy?
- Ratings ignore trailers — expect 30 to 50 percent worse towing. Budget fuel stops conservatively.
- EV MPGe?
- Different physics — MPGe equates energy content. Compare EVs by kWh/100km or miles per kWh instead.
- Stored anywhere?
- No. Math runs locally in your browser. No values are uploaded or stored.