
Watts Amps Volts Calculator
An Electrical Power Calculator✔ Calculate Watts
✔ Calculate Amps
✔ Calculate Volts
✔ Calculate kW
✔ Calculate Power Factor
✔ Single and Three Phase
Download Free Watts Amps Volts Calculator for iPhone, iPad or Android
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Description
Watts Amps Volts Calculator is a free electrical power converter for calculating Watts, Amps and Voltage single phase and kW, Amps, Voltage and Power Factor three phase.
Single Phase Power Calculations
Enter ANY two values to calculate the third
- Calculate Watts
- Calculate Amps
- Calculate Voltage
Three Phase Power Calculations
Enter ANY three values to calculate the forth
- Calculate kW
- Calculate Amps
- Calculate Voltage
- Calculate Power Factor
App demo
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Read what Our Happy Customers Are SayingFAQ's & How to
How to calculate Watts
To calculate Watts we use the following formula:
SINGLE PHASE
- Watts = Amps x Volts
For example, if Amps = 10 and Volts = 110 then,
10 (A) x 110 (V) = 1100 Watts.
How to calculate Amps
To calculate Amps we use the following formula:
SINGLE PHASE
- Amps = Watts ÷ Volts
For example, if Watts = 3000 and Volts = 110 then,
3000 (W) ÷ 110 (V) = 27.27 Amps.
How to calculate Volts
To calculate Volts we use the following formula:
SINGLE PHASE
- Volts = Watts ÷ Amps
For example, if Watts = 3000 and Amps = 13 then,
3000 (W) ÷ 13 (A) = 230.76 Volts.
How to calculate kW
To calculate kW from Amps we use the following formula:
SINGLE PHASE
- kW = Amps x Volts ÷ 1000
For example, if Amps = 25 and Volts = 110 then
25 (A) x 110 (V) = 2750 (W) ÷ 1000 = 2.75 kW.
How to calculate Power Factor
There are a number of methods to calculate Power Factor, the method to use depends on the information you have and the outcome you require, this Watts Amps Volts Calculator can calculate Power Factor from kW, Amps and Voltage (Three Phase).
To directly convert kW or kVA to or from Power Factor our kVA Calculator could be a great addition to your collection of electrical calculators, view » kVA Calculator.
How to convert kW to kVA
To convert from kW to kVA or from kVA to kW you can use the dedicated kVA Calculator App, view » kVA Calculator.
Watts Amps Volts Formula
The formula for Watts Amps Volts conversion is based on the Ohm’s Law triangle V over IR.
- V = Volts
- I = Current
- R = Resistance
We also have a dedicated Ohm’s Law App which is a great addition to the Watts Amps Volts Calculator.
Watts Amps Volts Conversion Calculator
With this Watts Amps Volts Calculator you can use it for converting any of the following,
Single Phase Watts Amps Volts Conversion:
- Watts (W)
- Amps (A)
- Volts (V)
Three Phase kW Amps Volts Power Factor Conversion:
- kW (kiloWatt)
- Amps (Amperes)
- Volts (Voltage)
- Power Factor (PF)

Get the app
An easy to use electrical calculatorSP = Single Phase
TP = Three Phase
✔ SP - Calculate Watts, Amps and Volts
✔ TP - Calculate kW, Voltage, Amps and Power Factor
Free Download for Android and iOS