How to Calculate Ev Road Trip Cost
What is Ev Road Trip Cost?
The EV Road Trip Cost Calculator estimates the total charging cost and time for a long-distance electric vehicle trip, factoring in DC fast charging stops, session costs, and time spent at each station.
Formula
Trip Cost = Number of Charging Stops x Average kWh per Stop x DC Fast Charging Rate ($/kWh)
- Dt
- Trip Distance (miles) — Total one-way distance of the road trip
- R
- Vehicle Range (miles) — EPA-rated or real-world range on a full charge
- Pdc
- DC Fast Charging Price ($/kWh) — Cost per kWh at DC fast charging stations
- Cs
- kWh per Charging Session (kWh) — Energy added per stop, typically 10% to 80% of battery
Step-by-Step Guide
- 1Enter total trip distance and your vehicle rated range
- 2The calculator determines the number of charging stops needed (charging to 80% each time)
- 3Input the DC fast charging rate in your region (typically $0.30-0.60/kWh)
- 4View total cost, estimated charging time, and cost comparison vs gasoline
Worked Examples
Input
500-mile trip, 260 mi range, charge 10-80% each stop, $0.40/kWh DCFC
Result
2 stops x 52.5 kWh each x $0.40 = $42.00 total charging cost + ~50 min charging time
Input
1,000-mile trip, 300 mi range, $0.48/kWh (Electrify America)
Result
4 stops x 56 kWh each x $0.48 = $107.52 + ~2 hrs charging time
Common Mistakes to Avoid
- ✕Planning to charge to 100% at DC fast chargers — charging above 80% slows dramatically and wastes time
- ✕Not accounting for charging curve slowdown; the last 20% can take as long as the first 60%
- ✕Forgetting to include idle fees charged by networks when you leave your car plugged in after charging completes
Frequently Asked Questions
How long does it take to charge an EV on a road trip?
Most modern EVs with DC fast charging can go from 10% to 80% in 20-40 minutes. Plan for 25-35 minutes per stop on average.
Is it more expensive to road trip in an EV or gas car?
DC fast charging on road trips costs roughly $0.08-0.15/mile, while gas at $3.50/gal in a 30 mpg car costs about $0.12/mile. EV road trips are similar or slightly more expensive than gas due to higher DCFC rates.