Tesla Model 3 LR, 600 mi
358 mi rated, 75 kWh, 250 kW Supercharger. Two stops, ~20 min each, total trip ~9 h.
EV road trip calculator
How many fast-charging stops will my EV road trip need?
Estimate stops, charging time, and drive time from route distance, EV range, battery capacity, departure SOC, reserve SOC, target stop SOC and DC charger power.
EV Road Trip Planner
EV road trip charging stop planner
Estimated total trip time10.3 h
Driving time9.2 h
Charging stops2
Time per stop0.5 h
Total charging time1 h
Energy added per stop53.9 kWh
Results are first-pass estimates. Verify with installers, manufacturers, and utility tariffs before purchase.
How it works
How it works
- Usable range per leg = vehicle range × (target SOC − reserve SOC) ÷ 100.
- Stops = ⌈(total distance − first-leg range) ÷ leg range⌉.
- Charging time per stop ≈ battery × (target − reserve) ÷ 100 ÷ effective charger kW. Apply a 0.70 derating factor to nameplate kW for real-world taper.
Worked examples
Worked examples
Hyundai IONIQ 6 SE LR, 700 mi
361 mi rated, 77 kWh, 233 kW peak. Two stops 18 min average thanks to 800 V flat curve.
Chevy Bolt EUV, 400 mi
247 mi rated, 65 kWh, 55 kW peak. One stop ~55 min at 10–80% — speed-limited by slow DC port.
Road trip FAQ
Road trip FAQ
Why use 0.70 of nameplate kW?
Real DC sessions average 50–70% of peak due to taper above 60% SOC, temperature derate, and station power sharing.
Should I charge to 100% on the road?
No. The 80→100% segment takes as long as 10→80% on most EVs. Stop at 80% and drive further on the next leg.
Does towing change the math?
Yes. Towing cuts efficiency 30–50%. Multiply vehicle range by 0.5–0.7 and reduce target SOC stop spacing accordingly.
Are reserve SOC and arrival SOC the same?
Reserve SOC is the buffer you want to keep on arrival at each charger (typically 10–15%). Set higher in cold weather or unfamiliar routes.
EV Calculators
Electric Vehicle Calculators
EV charging time calculator
Enter your battery capacity, starting and target state of charge, and charger output to estimate charging time, the kWh pulled from the wall, and your cost per session — all from open, transparent formulas.
Open calculatorEV lease vs buy calculator
Compare a financed EV purchase against a lease over a 5-year horizon. Inputs: vehicle price, buy down payment, loan APR and term, 5-year residual value, lease payment, drive-off, and annual operating cost.
Open calculatorEV total cost of ownership calculator
Sum purchase price (minus federal tax credit), fuel/electricity, insurance, maintenance and registration over 5 years. Default electricity 4.0 mi/kWh, gas 28 mpg.
Open calculator