Fuel Cost Calculator
Estimate road trip fuel usage and total fuel cost from distance and fuel economy.
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Trip distance km
Fuel efficiency L/100km
Fuel price $/L
Fill in the fields above and press Calculate or hit Enter ↵
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Estimate road trip fuel budget quickly
Last updated: March 30, 2026
A fuel cost calculator estimates trip spend from distance, fuel consumption, and pump price. This is useful for commute planning, delivery jobs, and vacation budgeting.
The core formula is straightforward: distance × consumption rate, then multiply by fuel price. Many drivers know the concept but do not want to compute it manually every time.
By showing liters needed and total cost, the tool helps with route comparison and realistic travel budgeting.
Frequently asked questions
How do I estimate fuel cost for a road trip?
Multiply trip distance by fuel consumption (L/100km), then multiply by fuel price per liter.
What input units should I use?
Use kilometers, liters per 100 km, and price per liter for accurate output.
Can I use this for round trips?
Yes. Enter total round-trip distance to get a realistic total fuel budget.