Tesla Charging Cost Calculator
See how much it costs to charge your Tesla from any state of charge to a target percentage, both at home and on the Supercharger network.
Model 3 RWD ≈ 60 kWh, Model Y LR ≈ 75 kWh, Model S Plaid ≈ 100 kWh.
Use your vehicle's Wh/mi or efficiency from the energy screen.
Charging power tapers. Use an average value for the SOC window you're charging through.
How to Use This Calculator
Enter your battery size
Use the usable battery capacity for your Tesla model. Many forums list exact values.
Select start and target charge
Plan typical charging windows (e.g. 20% to 80% for daily use, or 10% to 90% for road trips).
Add electricity rates
Use your home utility rate and the Supercharger rate shown in your Tesla app.
Adjust charging power
Estimate charging times using your Level 2 charger output and an average Supercharger power.
Formula
Energy Needed (kWh) = Battery Capacity × (Target % − Start %) ÷ 100
Home Cost = Energy Needed × Home Rate
Supercharger Cost = Energy Needed × Supercharger Rate
Range Added = Energy Needed × Miles per kWh
Time on Level 2 = Energy Needed ÷ Charger Power
Example: 75 kWh battery, 20%→80% (45 kWh), 3.4 mi/kWh, home $0.14, Supercharger $0.36:
Home cost = 45 × 0.14 = $6.30 → $0.05 per mile
Supercharger = 45 × 0.36 = $16.20 → $0.11 per mile
Level 2 @ 9.6 kW = 4.69 hours • Supercharger @ 120 kW = 22.5 minutes
About the Tesla Charging Cost Calculator
Charging costs vary widely based on electricity rates, battery size, and efficiency. This calculator compares home charging with Tesla’s Supercharger network so you can budget road trips and daily driving.
When to Use This Calculator
- Trip planning: Estimate charging costs before long journeys.
- Monthly budgeting: Compare EV energy costs to gasoline spending.
- Home charging ROI: Evaluate savings from installing a Level 2 charger.
- Efficiency tracking: Monitor how driving style affects cost per mile.
Why Use Our Calculator?
- ✅ Home vs. supercharger: Compare cost per mile and total session cost instantly.
- ✅ Customizable inputs: Adjust for your battery size, rates, and charging speeds.
- ✅ Time estimates: See how long each charging option takes.
- ✅ Mobile friendly: Plan on the go from your phone or tablet.
Common Applications
New Tesla owners: Understand the difference between home and public charging costs.
Rideshare drivers: Estimate operational costs across charging scenarios.
Energy-conscious households: Compare EV costs to other utility expenses.
Tips for Best Results
- Use time-of-use electricity rates if you charge overnight at discounted prices.
- Update efficiency values for winter/summer conditions—climate impacts energy use.
- Remember that Supercharger pricing can vary by location and time of day.
- Don’t charge daily to 100%—set target SOC based on Tesla’s battery health recommendations.
Frequently Asked Questions
Do I need to account for charging losses?
Charging losses typically add 5–10%. Increase your home rate slightly or add a buffer to energy needed if you want to include losses.
How do I find my electricity rate?
Check your utility bill for the per-kWh charge. For time-of-use plans, use the rate applicable when you usually charge.
Can I use this for other EVs?
Yes! Replace miles per kWh with your vehicle’s efficiency and adjust charging power to match your onboard charger.
Why does Supercharger power vary?
Peak power can reach 250 kW, but charging tapers as the battery fills and availability varies by stall. Use an average value for your SOC window.