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Trip Cost Calculator

The full driving cost of a trip — fuel plus tolls and parking, split fairly between everyone in the car. Built for road trips, group drives and shared commutes.

✓ Formula shown openly  •  ✓ Reviewed October 2026  •  ✓ Free — no sign-up  •  ✓ Nothing you enter is stored

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Trip Cost Calculator

Total Trip Cost$75.00
Fuel Cost$60.00
Gallons Used16.67
Per Person$18.75
Tolls & Parking$15.00
Trip Distance500 mi
Cost Per Mile$0.15

Total = Fuel + Tolls • Per person = Total ÷ People • Nothing is stored.

How Trip Cost Is Calculated

Start with fuel: gallons needed = distance ÷ MPG, and fuel cost = gallons × price. Then add the trip's fixed extras — tolls and parking — to get the true total. Splitting is simple division by the number of people sharing the ride, driver included.

Trip Cost = (Distance ÷ MPG × Price) + Tolls

Worked Example

A 500-mile road trip at 30 MPG and $3.60 a gallon burns 16.67 gallons = $60.00 of fuel. Add $15 of tolls and parking and the trip costs $75.00 total — split between 4 people, that is $18.75 each.

Tips for Splitting Trip Costs Fairly

Fuel-only question? Use the fuel cost calculator. Planning a commute budget instead? The cost per mile calculator adds monthly and yearly totals.

Trip Cost Calculator — FAQ

Should the driver pay a share too?

Usually yes — the common convention is an equal split including the driver, since everyone benefits from the trip. Some groups let the driver ride free as thanks; agree it upfront.

Does this include hotels and food?

No — this tool covers the driving costs: fuel, tolls and parking. Add your own lodging and food budget on top for a full trip budget.

How do I handle a round trip?

Tick "Double distance" — fuel and per-mile figures double, while tolls you enter are counted once, so enter the round-trip toll total if tolls apply both ways.

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