Electrical Power Calculator

Calculate current, kW and kVA from voltage and power factor for single-phase or three-phase systems.

All Tools
Electrical System
Current
100.0 A
kW
18.4 kW
kVA
23.0 kVA
Power Factor
0.8 PF

kW and kVA

kW shows useful active power. kVA shows apparent power and includes the effect of power factor.

Power Factor

Power factor is the ratio between active and apparent power. Common preliminary estimates often use 0.8.

Single and Three Phase

Single-phase calculations use voltage and current directly; three-phase systems include the square root of 3 factor.

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