Use our Amps Per Kw Calculator by entering values of Power (Watts), Voltage (V) to get the your results quickly
The Amps per kW Calculator makes things way easier for you. It assists you to measure the number of amps required for a specific kilowatt rating based on the voltage and power factor. More importantly, this tool is also useful in electrical calculations for both single-phase and three-phase systems, helping you manage the current and power capacity of an electrical system.

Formula:
Contents
Variable | Description |
---|---|
kW | Kilowatt (power) |
PF | Power factor (dimensionless) |
A | Current in amperes (A) |
V | Voltage in volts (V) |
How to calculate amps from kW ?
The general formulas to convert kW to amps vary based on the phase type (single-phase or three-phase).
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Single-Phase Formula:
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Three-Phase Formula:
Examples:
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Single-phase calculation: For a 240V single-phase system and a load of 1 kW:
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Three-phase calculation: For a 440V three-phase system with 7.5 kW and a power factor of 0.8:
Solved Calculation:
Example 1 (Single-phase system):
Step | Calculation |
---|---|
Voltage (V) | 240V |
Current (A) | 10A |
Power Factor (PF) | 0.9 |
kW Calculation | |
Result |
Answer: The power is 2.16 kW for a 10A current at 240V.
Example 2 (Three-phase system):
Step | Calculation |
---|---|
Voltage (V) | 415V |
Current (A) | 15A |
Power Factor (PF) | 0.85 |
kW Calculation | |
Result |
Answer: The power is 5.29 kW for a 15A current at 415V.
What is Amps per kW Calculator?
An Amps per kW Calculator is an accessory that is used to convert between kilowatts (kW) and amps (A) in both single-phase and three-phase systems. Indeed, knowing the relationship between kilowatts, voltage, and amperage is essential for electrical system design, load calculations, and power distribution.
Final Words:
In essence, this calculator is useful for finding out the current that is required for specific loads, sizing electrical components, and ensuring safe operation of electrical systems. This is by far the most valuable tool in your hands.