kW to kWh Calculator
Convert charging power in kilowatts to energy delivered in kilowatt-hours.
kWh = Kilowatts × Hours
Formula
kW
hours
—
Enter values above
How This Formula Works
kW (kilowatts) is the rate at which energy is transferred. kWh (kilowatt-hours) is the total energy transferred. Multiply kW by the number of hours to get kWh. This is the same unit used on your electric bill. A 11.5 kW Level 2 charger running for 7 hours adds 80.5 kWh — enough to fully charge a Tesla Model Y Long Range.
Common EV Examples
Ioniq 5 overnight (11.5 kW, 6 hrs)
11.5 × 6 hours
69 kWh (full charge)
Model 3 quick top-up (11.5 kW, 2 hrs)
11.5 × 2 hours
23 kWh (~80 miles)
350 kW HPC, 10 minutes
350 × 0.167 hrs
58.3 kWh (~200 miles)
Daily Level 1 (1.4 kW, 12 hrs)
1.4 × 12 hours
16.8 kWh (~60 miles)
Fleet DC fast (50 kW, 1 hr)
50 × 1 hour
50 kWh
EV home solar (8 kW system)
8 kW × 5 peak hours
40 kWh/day