SpecCalc Hub · Low
EV Home Charging Cost Calculator
Estimate EV charging energy, cost, and time from battery size, SOC, efficiency, tariff, and charger power.
PDF export during launch
Launch offer: free for early adopters.
No payment is required during the launch period.
No account required. Calculation history is not stored.
Formula
battery_energy_added_kwh = capacity * (target_soc - start_soc) grid_energy_kwh = battery_energy_added_kwh / efficiency charging_cost = grid_energy_kwh * tariff charging_time_hours = grid_energy_kwh / charger_power_kw
Assumptions
- Inputs are user-provided.
- Results are preliminary estimates.
- Charger power and tariff are constant.
Limitations
- Real charging can slow near high SOC and may include losses not modeled here.
Sources / methodology
Converts SOC difference into battery energy and adjusts for charging efficiency.
- Formula version
- 1.0.6
- Formula review date
- 2026-05-25
Source links
Quick answer: EV Home Charging Cost Calculator estimates energy added to battery from transparent input parameters and a visible formula. Results are informational estimates only and should be checked against the stated assumptions and limitations.
Input parameters
- Battery capacity (kWh): 60 kWh
- Start SOC (%): 20 %
- Target SOC (%): 80 %
- Charging efficiency (%): 90 %
- Tariff per kWh (/kWh): 0.15 USD/kWh
- Charger power (kW): 7.2 kW
- Currency: USD
Output values
- Energy added to battery (kWh)
- Grid energy (kWh)
- Charging cost
- Charging time (hours)
Step-by-step example
- Enter values into the calculator fields.
- Run the calculation and review the result values.
- Compare the result with the assumptions, limitations and sources below.
Worked examples
Small load example
Use EV Home Charging Cost Calculator with realistic household or workshop inputs first, then compare the estimate with a bill, label, nameplate, or manufacturer data.
Uzbekistan-friendly money example
For money calculators, select UZS and enter local tariff values such as 1000 UZS/kWh instead of forcing the value into USD or EUR ranges.
Caution example
If inputs are approximate, treat the result as a planning number and rerun the calculator with better data before making a purchase decision.
Common mistakes
- Keep all units consistent with the field labels.
- Check whether the input values are measured, nameplate values or planning assumptions.
- Review the stated assumptions and limitations before using the estimate.
What to check next
Check the inputs, limitations, sources and related calculators before using the estimate in a real decision.
FAQ
What does EV Home Charging Cost Calculator calculate?
EV Home Charging Cost Calculator estimates energy added to battery from transparent input parameters and a visible formula. Results are informational estimates only and should be checked against the stated assumptions and limitations.
What formula does this calculator use?
The visible formula starts with: battery_energy_added_kwh = capacity * (target_soc - start_soc). The full formula, assumptions and limitations are shown on the page.
Are the results stored?
No account is required and SpecCalc Hub does not save personal calculation history.
Related calculators
This calculator provides an estimate for informational purposes only. It is not a certified engineering design, electrical safety approval, or professional installation recommendation. Always verify final decisions with a qualified professional and applicable local codes.