## DC power calculator

**DC power calculator**** formula**

Some appliances run through direct current, and it’s easy to find the total energy consumption by using the accurate formula.

Voltage (V) calculation from current (I) and resistance (R):

*V*_{(V)} = *I*_{(A)} × *R*_{(Ω)}

Complex power (S) calculation from the voltage (V) and current (I):

*P*_{(W)} = *V*_{(V)} × *I*_{(A)} = *V*^{ 2}_{(V)} / *R*_{(Ω)} = *I* ^{2}_{(A)} × *R*_{(Ω)}

You can now calculate the values by using the power calculator, and it will be all about your power calculation.

## AC power calculator

**AC power calculator**** formula**

Electric appliances that come with AC supply can be managed to calculate by converting the simple formulas.

The voltage V in volts (V) is equal to the current I in amps (A) times the impedance Z in ohms (Ω):

*V*_{(V)} = *I*_{(A)} × *Z*_{(Ω)} = *(|I|*×*|Z*|) ∠ (*θ** _{I}* +

*θ*

*)*

_{Z}The complex power S in volt-amps (VA) is equal to the voltage V in volts (V) times the current I in amps (A):

*S*_{(VA)} = *V*_{(V)} × *I*_{(A)} = *(|V|*×*|I*|) ∠ (*θ** _{V}* –

*θ*

*)*

_{I}The real power P in watts (W) is equal to the voltage V in volts (V) times current I in amps (A) times the power factor (cos *φ*):

*P*_{(W)} = *V*_{(V)} × *I*_{(A)} × cos* φ*

The reactive power Q in volt-amps reactive (VAR) is equal to the voltage V in volts (V) times the current I in amps (A) time the sine of the tricky power phase angle (*φ*):

*Q*_{(VAR)} = *V*_{(V)} × *I*_{(A)} × sin* φ*

This is the complex power calculator formula to serve the users with ease, and you can get the complete benefit of this equation if you know the basics.

## Energy & power calculator

**Power calculator**

**formula**

The power calculator is there to sort out your problems.

The average power *P* in watts (W) is equal to the energy consumed *E* in joules (J) divided by time Δ*t *in seconds (s):

*P*_{(W)} = *E*_{(J)} / Δ*t*_{(s)}

**Read More: Watts Calculator**

## How to calculate the power in three phases?

You must be thinking about why you need to know about the power calculator physics. It’s essential to determine the apparent power, reactive power, and capacitance power to find out the total power calculator watts. You keep in mind that the power calculator doesn’t differentiate the lagging and leading power factors.

Thus, you have to connect the power factor capacitance parallel to the appliance to get accurate readings.

After obtaining the values, you can put the values in the power factor calculation equation and provide the total amount of energy consumption.

### What is a single-phase calculation?

*PF* = |cos *φ|* = 1000 × *P*_{(kW)} / (*V*_{(V)} × *I*_{(A)})

Apparent power calculation:

*|S*_{(kVA)}| = *V*_{(V)} × *I*_{(A)} / 1000

Reactive power calculation:

*Q*_{(kVAR)} = √(|S_{(kVA)}|^{2} – *P*_{(kW)}^{2})

Power factor correction capacitor’s capacitance calculation:

*S*_{corrected (kVA)} = *P*_{(kW)} / *PF*_{corrected}

*Q*_{corrected (kVAR)} = √ (*S*_{corrected (kVA)}^{2} – *P*_{(kW)}^{2})

*Q*_{c (kVAR)} = *Q*_{(kVAR)} – *Q*_{corrected (kVAR)}

*C*_{(F)} = 1000 × *Q*_{c (kVAR)} / (2π*f*_{(Hz)}×*V*_{(V)}^{2})

### How to get a three-phase power calculation?

Power factor calculation:

*PF* = |cos* φ|* = 1000 × *P*_{(kW)} / (*√*3 × *V*_{L-L(V)} × *I*_{(A)})

Apparent power calculation:

*|S*_{(kVA)}| = *√*3 × *V*_{L-L(V)} × *I*_{(A)} / 1000

Reactive power calculation:

*Q*_{(kVAR)} = √(|S_{(kVA)}|^{2} – *P*_{(kW)}^{2})

Power factor correction capacitor’s capacitance calculation:

*Q*_{c (kVAR)} = *Q*_{(kVAR)} – *Q*_{corrected (kVAR)}

*C*_{(F)} = 1000 × *Q*_{c (kVAR)} / (2π*f*_{(Hz)}×*V*_{L-L(V)}^{2})

## Why we need a power calculator?

The question arises in mind why a power calculator is essential to calculate energy consumption. Well, the answer is simple. If you buy an electric appliance, volts and watts would be calibrated along with resistance sometimes. You think this information is enough to calculate energy values. But let me guide you in detail.

Sometimes an electric tool may have high wattages that could be not compatible with your home voltage. You need an advance option that could help you for a longer time. Thus, a power rating calculator would be an ideal choice for you to determine the total house load. You can save your money and buy an accurate product that could be suitable according to your place voltages.

## How to use an electric power calculator

Some people are so responsible and want to know the monthly or yearly consumption of the electric appliances used at home. You can calculate simply by knowing about the voltages and current of that tool. But it’s not easy in some cases; thus, a power calculator is introduced in the market to detail your electric unit. Now, you can check the power by attaching the electric power calculator to your tool.

However, calculating power is not that simple. You may need to know about some electric detail that could define your power total power consumption. The power calculator formula can help you do this job with ease if you have sufficient information about electric appliances. Hence, I would recommend buying a power calculator to get accurate and comprehensive detail.

## What is power, and how can you calculate it?

Electric power is the specified rate at which energy travels through an electric circuit. Well, it’s hard to understand, but I would explain it simply for your better assessment.

electric power = voltage difference x current

P = V X I

You can see power is equal to the difference of voltage and the total amount of current passing through the tool. Thus, you can determine the electric power by the power formula. It would be difficult to obtain all essential electric detail with an accurate value. That’s why the power formula calculator is used to estimate your home electric detail.

## How to calculate electric consumption and cost?

Well, its simple to calculate the working hour for an appliance. If you precisely know the hours, you can estimate the electric consumption. Most devices come with calibrated watts, and you can take a rough estimation by dividing the working hours by three. You must be alright with working hours, but the question is still there. How to calculate power within exact values.

For your convenience, I would explain some power calculator formula to measure the total energy.

Electric power calculation daily

*Wattage × Hours Used Per Day) ÷ 1000 = Daily Kilowatt-hour (kWh) consumption*

Complex power calculator formula for annual consumption

*Daily kWh consumption × number of days used per year = annual energy consumption*

*Power calculator** formula to see the annual cost*

*Annual energy consumption × utility rate per kWh = yearly cost to run the appliance*