kVA to kW Calculator
Generator load sizing, UPS capacity calculation. Converts apparent power in kVA to real usable active power in kW based on load power factor (typically 0.80 for generators/UPS).
Step-by-Step Derivation ▼ Show Steps
Calculations adhere to standard electrical engineering physics and National Electrical Code (NFPA 70) regulations.
Engineering Principles & Calculations
This calculator uses the exact mathematical relationships between Apparent Power (kVA), Power Factor (PF - default 0.80) to determine Real Power (kW), Reactive Power (kVAR). In practical installations, factors such as ambient raceway temperature, harmonic distortion, duty cycle continuous operation, and conductor impedance must be accounted for by a certified electrician.
Converts apparent power in kVA to real usable active power in kW based on load power factor (typically 0.80 for generators/UPS).
Typical Application & Industry Guidelines
Generator load sizing, UPS capacity calculation.
kVA to kW Calculator Benchmark Lookup Table
| Generator kVA | kW @ 0.80 PF (Standard) | kW @ 0.85 PF | kW @ 1.0 PF (Resistive) |
|---|---|---|---|
| 20 kVA | 16.0 kW | 17.0 kW | 20.0 kW |
| 50 kVA | 40.0 kW | 42.5 kW | 50.0 kW |
| 100 kVA | 80.0 kW | 85.0 kW | 100.0 kW |
| 150 kVA | 120.0 kW | 127.5 kW | 150.0 kW |
| 250 kVA | 200.0 kW | 212.5 kW | 250.0 kW |
| 500 kVA | 400.0 kW | 425.0 kW | 500.0 kW |