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Ohm’s Law (P,I,V,R) Calculator

Ohm’s Law (P,I,V,R) Calculator

Below are the four Electrical calculators based on Ohm’s Law with Electrical Formulas and Equations of Power, Current, Voltage and Resistance in AC and Dc Single phase & Three Phase circuit.
Enter the known values and select a conversion from the buttons below and click on Calculate. result will display the desire values which you want to calculate.

Calculate Power (W) in Watts using Ohm’s Law:
Enter any two values of: V, I, and R
V: I: R:
      
Electrical TechnologyElectrical Technology  
 Output 
Watts (W):      
(1) 
Electrical Power Formulas
Electrical Power formulas in DC Circuits
P = VxI
P = I2R
P = V2/R
Electrical Power formulas in Single Phase AC Circuits
P = VxI Cosθ
P = I2 x R Cosθ
P = (V2/R) Cosθ
Electrical Power formulas in Three Phase AC Circuits
P =√3 x VLxIL Cosθ
P =3 x VPxIP Cosθ
P =3 I2 x R Cosθ
P =3 (V2/R) x R Cosθ
*Where
I = Current in Amperes (A)
V = Voltage in Volts (V)
P = Power in Watts (W)
R = Resistance in Ohm (Ω)
Calculate Current (I) in Amperes using Ohm’s Law:
Enter any two values of: V, W, and R
V: W: R:
3-Phase
      
Ohm’s Law (P,I,V,R) Calculator | Power, Voltage, Current, Resistor CalculatorElectrical Technology  
 Output 
Amperes (A):      
(2)  Electrical Current Formulas
Electrical Current Formulas in DC Circuit
I=V/R
I = P/V
I = √P/R
Electrical Current Formulas in Single Phase AC Circuit
I = P / (V x Cosθ)
I = (V/Z)…Where Z = impedance = Resistance of AC Circuits
Electrical Current Formulas in Three Phase AC Circuit
I = P / √3xVxCosθ
*Where
I = Current in Amperes (A)
V = Voltage in Volts (V)
P = Power in Watts (W)
R = Resistance in Ohm (Ω)
Calculate Voltage (V) in Volts using Ohm’s Law:

Enter any two values of: W, I, and R
W: I: R:
      
Electrical TechnologyElectrical Technology  
 Output 
Volts (V):      
(3) 
Voltage or Electrical Potential Formulas
Electrical Potential or Voltage Formula in DC Circuits
V = I x R
V = P / I
V = √ (P x R)
Voltage or Electrical Potential Formulas in Single Phase AC Circuits
V = P/(IxCosθ)
V = I / Z… Where Z = impedance = Resistance of AC Circuits
*Where
I = Current in Amperes (A)
V = Voltage in Volts (V)
P = Power in Watts(W)
P = Power in Watts(W)
R = Resistance in Ohm (Ω)
Calculate Resistance (R) in Ohms (Ω) using Ohm’s Law:
Enter any two values of: V, I, and W
V: I: W:
      
Electrical TechnologyElectrical Technology  
 Output 
R (Ohms = Ω):      
(4) 
Electrical Resistance Formulas
R = V/I
R = P/I2
R = V2/P
*Where
I = Current in Amperes (A)
V = Voltage in Volts (V)
P = Power in Watts (W)
R = Resistance in Ohm (Ω)

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