# Power Calculator

## Power Calculator

We are offering the Power consumption calculator, to help you calculates the electric power/ current / voltage /resistance.

• AC power calculator
• DC power calculator
• Energy & power calculator
 Resistance: R = ohms (Ω) kilo-ohms (kΩ) mega-ohms (MΩ) Current: I = micro-amps (μA) milli-amps (mA) amps (A) kilo-amps (kA) mega-amps (MA) Voltage: V = micro-volts (μV) milli-volts (mV) volts (V) kilo-volts (kV) mega-volts (MV) Power: P = micro-watts (μW) milli-watts (mW) watts (W) kilo-watts (kW) mega-watts (MW)
 Impedance: Z = Ω kΩ MΩ ∠ ° = Current: I = μA mA A kA MA ∠ ° Voltage: V = V kV MV ∠ ° Power: S = VA kVA MVA ∠ ° =
 Energy: J Time period s Average power: W

## AC power calculator

You need to enter the 2 values to obtain the other values and hit the = button.

tOOL

## AC power calculation

The value of voltage V in volts (V) is apparently equal to the value of current I in amps (A) multiplied by the impedance Z measured in ohms (Ω).

V(V) = I(A) × Z(Ω) = (|I|×|Z|) ∠ (θI + θZ)

The value of complex power S in volt-amps (VA) is apparently equal to the voltage V measured in volts (V) multiplied by the value of current I measured in amps (A).

S(VA) = V(V) × I(A) = (|V|×|I|) ∠ (θV – θI)

The value of real power P measured in watts (W) is apparently equal to the value of voltage V measured in volts (V) multiplied by the value of current I in amps (A) multiplied by the power factor (cos φ).

P(W) = V(V) × I(A) × cos φ

The value of reactive power Q measured in volt-amps reactive (VAR) is apparently equal to the value of voltage V in volts (V) multiplied by the current I in amps (A) time the value of sine of the complex power phase angle (φ):

Q(VAR) = V(V) × I(A) × sin φ

The value of power factor (FP) is apparently equal to the absolute value of cosine with the complex power phase angle (φ):

PF = |cos φ|

## DC power calculator

All you need is to enter 2 values to obtain other values then hit the = button.

tOOL

## DC power calculation

You can easily make the Voltage (V) calculation with the help of the values of current (I) and resistance (R).

V(V) = I(A) × R(Ω)

The value of Complex power (S) calculation can be obtained from the value of voltage (V) and current (I).

P(W) = V(V) × I(A) = V 2(V) / R(Ω) = I 2(A) × R(Ω)

## Energy & power calculator

All you need is to enter the 2 values to find the other values and finally hit the = button.

tOOL

## Energy & power calculation

The value of average power P measured in watts (W) is apparently equal to the value of energy consumed E measured in joules (J) is divided by time period Δt measured in seconds (s).

P(W) = E(J) / Δt(s)