Free · Everyday planning calculators

Commuting Mode Cost Comparison

Compare a shared car commute with a supplied public-transport pass cost over a chosen period.

  • Formula & worked example
  • Private in your browser
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

Twenty-two round trips of 10 km each way at 10 L/100 km and $2/L cost $88 before parking and wear.

Car fuel budget = commute days × two-way distance × consumption × fuel price

Worked example

Enter these known values and leave the other values blank.

One-way distance to workplace
10 km
I commute...
22 times / mos
People sharing a ride
1
Fuel economy
10 L/100 km
Fuel price
2 USD / L
Parking and toll costs
0 USD / mos
Wear and tear costs
0 USD / mos
Ticket price
10 USD
Ticket is valid for...
5 days
Total cost
88 USD / mos
Cost per person
88 USD / mos
Total cost
44 USD / mos

Assumptions and limitations

  • Distance is one-way. The commute frequency control expresses days per selected fixed-duration period and defaults to a month. Parking and wear amounts are already totals for that period. Public transport prorates a supplied pass price by its validity interval.

Common questions

What assumptions affect this result?

Distance is one-way. The commute frequency control expresses days per selected fixed-duration period and defaults to a month. Parking and wear amounts are already totals for that period. Public transport prorates a supplied pass price by its validity interval.

Can I solve for a missing value?

Clear the missing field and enter compatible known values in the displayed units. Supported inverse branches remain available; rounding and one-way outputs keep their original direction.

References

Guard the direct public-transport cost division with strictly positive pass validity so a rejected zero-duration pass leaves an empty result instead of infinity. All captured formulas and inverse variants remain pinned and unchanged. Require whole people and strictly positive public-transport pass validity to avoid a zero denominator.

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