Everyday Life tool map

Transport & travel

Trips, vehicles, fuel, and travel planning.

Choose the tool whose inputs and output match your task. Check each calculator’s assumptions and limitations before using its result.

Latest update: Aug 14, 2026

These tools compare driving fuel costs and fuel consumption. Use the fuel cost calculator to estimate trip fuel spending from distance, fuel efficiency, and your entered price, with a round-trip option when needed. The price is per gallon for MPG or per litre for L/100km. Use the fuel economy converter to translate between miles per US gallon, kilometres per litre, and litres per 100 kilometres. Find more everyday planning tools in the Everyday Life collection.

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Fuel Cost Calculator & Estimator

Estimate trip fuel cost with this fuel cost estimator — enter distance, fuel economy, fuel price, distance units, efficiency units, and round-trip selection to build a driving budget.

Updated Aug 14, 2026

Fuel Economy Converter Calculator

Convert MPG, km/L, and L/100km while understanding why fuel economy and fuel consumption are reciprocal measures, not simple linear units.

Updated Aug 14, 2026

Verified Aug 14, 2026

Frequently asked questions

How does this fuel cost calculator estimate a trip?: It converts the entered distance when needed, estimates fuel used from the selected efficiency unit, multiplies fuel used by the entered fuel price, and rounds the displayed totals. With MPG, it uses miles divided by miles per gallon. With liters per 100 kilometers, it uses kilometers times the efficiency value divided by 100.
What happens when I turn on round trip?: The calculator doubles the distance before any unit conversion or fuel calculation. A 75 mile entry becomes 150 displayed miles, and a 120 kilometer entry becomes 240 displayed kilometers. Fuel used, total fuel cost, and the reported distance all reflect the doubled round-trip distance.
Can I mix miles with liters per 100 kilometers?: Yes. The compute logic converts miles to kilometers when liters per 100 kilometers is selected, and converts kilometers to miles when MPG is selected. The cost per unit is still displayed per the distance unit you chose, so check that field before interpreting the per-mile or per-kilometer result.