Estimate trip fuel, cost, cost per distance, repeat-trip budgets, EPA-factor gasoline tailpipe CO₂, and an explicit EV energy comparison.
A quick decision brief for this specific tool
Trip distance and units, measured or rated fuel efficiency and units, fuel price and units, one-way/round-trip choice, explicit monthly/yearly repeat counts, and explicit EV rate/efficiency
Fuel quantity, trip cost, unit cost, repeat projections, gasoline tailpipe CO₂, and an assumption-based EV energy/cost comparison
All physical inputs normalize to miles, MPG, and dollars per U.S. gallon; unit toggles convert the entered value; gasoline CO₂ uses EPA’s 8.887 kg/gallon combustion factor
Choose your path
Estimate a mapped trip’s fuel, cost, repeat-trip budget, tailpipe CO₂, and explicit EV energy comparison while preserving physical values across unit changes.
Budget fuel from route distance, observed MPG, current price, and a round trip.
Enter the trip assumptions and inspect fuel, cost, cost per distance, and tailpipe CO₂.
Can reconcile gallons × price and understands origin/destination are labels rather than routing fields.
Switch units without silently changing the modeled trip.
Toggle miles/km, MPG/L/100 km, and price per gallon/liter.
Thirty miles converts to 48.28 km while the default $4.20 trip cost stays unchanged.
Use explicit frequency and EV assumptions instead of hidden defaults.
Set monthly/yearly repeat counts, electricity rate, and mi/kWh; compare projections.
Sees the exact repeat multipliers and treats EV output as trip-energy cost rather than total ownership.
This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
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Inputs are converted to miles, MPG, and dollars per U.S. gallon before fuel and cost are calculated.
Trip cost = distance miles ÷ MPG × price per gallonMonthly and yearly totals use the entered repeat counts. EV kWh equals trip miles divided by entered mi/kWh, then cost equals kWh times the entered rate.
Gasoline tailpipe CO₂ uses EPA's 8,887 g/gallon combustion factor. Upstream fuel and vehicle-lifecycle emissions are not included.
Updated: July 2026
A traveler enters mapped distance, observed highway MPG, current fuel price, and round-trip choice to estimate fuel stops and cost.
A commuter enters the actual number of repeated trips per month and year instead of relying on a hidden weekday assumption.
A driver compares the same trip using an observed gasoline efficiency and a separately entered EV efficiency and electricity rate.
Build an auditable trip estimate from distance, observed efficiency, fuel price, and explicit repeat counts. Switch between U.S. and metric units without changing the underlying physical value, and compare an EV only from the rate and mi/kWh you enter.