Commute Cost Calculator Formula

Understand the math behind the commute cost calculator. Each variable explained with a worked example.

Formulas Used

Monthly Commute Cost

monthly_cost = (daily_fuel + daily_tolls) * work_days_month

Annual Commute Cost

annual_cost = (daily_fuel + daily_tolls) * work_days_month * 12

Cost Per Mile

cost_per_mile = (daily_fuel + daily_tolls) / daily_miles

Variables

VariableDescriptionDefault
miles_one_wayOne-Way Distance(miles)22
fuel_priceFuel Price Per Gallon(USD/gal)3.5
mpgVehicle MPG(MPG)28
work_days_monthWork Days Per Month22
daily_tollsDaily Toll Cost(USD)0
daily_milesDerived value= miles_one_way * 2calculated
daily_fuelDerived value= daily_miles / mpg * fuel_pricecalculated

How It Works

How to Calculate Commute Costs

A daily commute has fuel costs (distance / MPG x price) plus tolls. Multiply by workdays for monthly and annual totals.

Formula

Daily Fuel = (Round-Trip Miles / MPG) x Fuel Price

Monthly Cost = (Daily Fuel + Tolls) x Workdays

Worked Example

22-mile each way commute, 28 MPG, $3.50/gal, no tolls, 22 workdays.

miles_one_way = 22fuel_price = 3.5mpg = 28work_days_month = 22daily_tolls = 0
  1. 01Daily round trip = 22 x 2 = 44 miles
  2. 02Daily fuel = 44 / 28 x $3.50 = $5.50
  3. 03Monthly cost = $5.50 x 22 = $121.00
  4. 04Annual cost = $121.00 x 12 = $1,452.00

Ready to run the numbers?

Open Commute Cost Calculator