Road Trip Cost Calculator

A road trip fuel cost calculator estimates total petrol/gasoline expenditure from distance, fuel economy, and current fuel price. Add 10–20% for real-world driving conditions

The calculator uses the standard published formula for road trip fuel cost. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Fuel used = Distance / Fuel economy. Each step in the calculation is shown so you can verify the result manually.