How to use this calculator
- Enter home-to-work distance as one way.
- Select Round trip for a normal return day.
- Enter realistic economy and fuel price.
- Multiply the daily result by actual driving days in the period.
Formula and variables
Daily distance = one-way commute × 2Daily fuel cost = daily miles ÷ MPG × pricePeriod cost = daily fuel cost × commute days
What each input means
- Commute days should account for remote work, leave, holidays, and other transport.
- Include recurring detours only if they are part of the commute being estimated.
Worked examples
15 miles each way
A 30-mile day at 30 MPG uses 1 gallon. At $3.50, 20 driving days cost $70.
Hybrid schedule
A 12-mile commute each way at 24 MPG uses 1 gallon per day. At $3.40, 12 office days cost $40.80 and 18 days cost $61.20.
Real-world factors
- Stop-and-go traffic and cold starts can differ from a highway rating.
- School runs, parking searches, or errands can add distance.
When to use it
- Budget office travel.
- Compare hybrid schedules.
- Estimate a route change.
Common mistakes
- Multiplying by every weekday instead of actual driving days.
- Entering total daily distance and also selecting Round trip.
Limits of the estimate
Fuel only. Parking, tolls, maintenance, insurance, depreciation, and time are separate.
Questions about this calculator
How do I estimate monthly commute fuel?
Calculate one return workday and multiply its fuel cost by expected driving days that month.
Should I use city or highway MPG?
Use a figure closest to the commute's traffic mix, ideally measured on similar drives.