Rideshare Cost Compare Calculator Formula
Understand the math behind the rideshare cost compare calculator. Each variable explained with a worked example.
Formulas Used
Rideshare Cost
rideshare_total = rideshare_base + rideshare_per_mile * trip_milesOwn Car Cost (with parking)
own_car_total = own_car_cost_per_mile * trip_miles * 2 + parking_costCheaper Option Saves
savings = abs((rideshare_base + rideshare_per_mile * trip_miles) - (own_car_cost_per_mile * trip_miles * 2 + parking_cost))Variables
| Variable | Description | Default |
|---|---|---|
rideshare_base | Rideshare Base Fare(USD) | 3 |
rideshare_per_mile | Rideshare Rate per Mile(USD/mile) | 1.5 |
trip_miles | Trip Distance(miles) | 8 |
parking_cost | Parking Cost (if driving)(USD) | 10 |
own_car_cost_per_mile | Your Car Cost per Mile(USD/mile) | 0.67 |
How It Works
Rideshare vs Driving Cost Comparison
Comparing rideshare fares to the true cost of driving (including fuel, depreciation, insurance, and parking) reveals when each option makes financial sense.
Formula
Rideshare = Base Fare + Per Mile Rate x Distance
Own Car = Cost per Mile x Distance x 2 (round trip) + Parking
The IRS mileage rate ($0.67/mile in 2024) captures total car ownership costs. For short trips with expensive parking, rideshare often wins.
Worked Example
An 8-mile trip, rideshare at $3 base + $1.50/mile, own car at $0.67/mile + $10 parking.
- 01Rideshare = $3 + $1.50 x 8 = $15.00
- 02Own car = $0.67 x 8 x 2 + $10 = $10.72 + $10 = $20.72
- 03Rideshare saves $5.72 on this trip
Frequently Asked Questions
When does driving your own car win?
Driving is cheaper for longer distances (15+ miles), trips with free parking, multiple errands in one trip, and when traveling with 3+ people (one rideshare fare vs one gas tank).
What about surge pricing?
Surge pricing during peak hours can double or triple rideshare costs. Check the app before booking, and consider waiting 10-15 minutes for surge to drop.
Should I include insurance in car costs?
The IRS rate ($0.67/mile) already includes insurance, depreciation, fuel, and maintenance. If you would pay insurance regardless, using only fuel cost ($0.10-0.15/mile) is fairer for comparison.
Ready to run the numbers?
Open Rideshare Cost Compare Calculator