In electrical appliance repair or electrician services, we often need to use amperes, volts, and watts. Clarifying these values is essential for ensuring safety and carrying out subsequent operations. This involves the issue of data conversion. So, why is conversion necessary? What is the relationship between these conversions?

What Is Volt?

Volt is a derived unit of the International System of Units, used to measure voltage or electrical potential difference, and is denoted by V. It is named after Alessandro Volta, the Italian scientist who first discovered the principles of generating electrical current using chemical methods. Volts are crucial for understanding and calculating energy transmission in electrical systems.

In everyday life, batteries and household power supplies are common sources of voltage. For example, there are 1.5V AA batteries and 3.2V rechargeable lithium iron phosphate batteries. For household AC power supplies, Japan uses 100V, the United States and Canada typically use 120V, most European countries use 220-240V, mainland China and Hong Kong use 220V, and Australia and New Zealand use 230V. We can measure the voltage with a voltmeter or calculate it using formulas.

What Is Watt?

Watts, also a unit of the International System of Units, symbolized as W, are used to measure power. Power refers to the rate at which work is done or energy is converted over time. If a device can do 1 joule (J) of work per second, then its power is 1 watt. For example, a 60-watt light bulb consumes 60 joules of energy per second when operating normally.

It appears constantly in our daily lives, from mobile phone chargers operating at a few dozen watts, to generators producing several megawatts (MW). You might be more familiar with kilowatts (Kw), as it is a more commonly used unit. 1 kilowatt equals 1000 watts, and 1 megawatt equals 1000 kilowatts. The electricity we consume is related to watts: Watt-hours (Wh) = Watts (W) x Time (h).

To know the amount of power, we can use a power meter to measure it, such as the real-time power output of a circuit in an electrical system. Additionally, we can also use formulas to calculate it, for example, the power in appliance applications can be expressed through voltage (V) and current (I): P = VI.

What Are The Differences Between Watts And Volts?

Volts measure voltage, while watts measure power. Current is the link between them, as the voltage and current in a circuit determine the power. The formula P = V I clearly expresses their relationship, where:

P is the power, measured in watts (Watt),

V is the voltage, measured in volts (Volt),

I is the current, measured in amperes (Ampere).

Using this formula, we can understand how to convert volts to power, or how to derive the voltage in a circuit from the power:

How To Convert Volts To Watts?

Because volts and watts measure different physical quantities, we cannot directly convert between them.

Volts To Watts Conversion Formula

If you know the voltage (V) and the current (I) passing through a DC circuit, you can use the following formula to calculate the power (P):

P = V * I

Where P is the power, measured in watts (Watt),

V is the voltage, measured in volts (Volt),

and I is the current, measured in amperes (Ampere).

Below, we will use some examples to help you better understand:

Volts To Watts Conversion Examples

Assuming an appliance uses a voltage of 220V and a current of 5Amp, then the power it consumes is:

P = V * I = 220V x 5A = 1100W

This means that at a current of 5A, 220 volts is converted to 1100 watts.

With the current set at 5A, we can use the formula to calculate the power consumption for more commonly used voltages:

Volts (V) Amp (A) Watts (W)
5 Volt Convert Into Watt 5 A 25 W
12 Volt Convert Into Watt 5 A 60 W
120 Volts To Watts Conversion 5 A 600 W
230 Volts To Watts Converter 5 A 1150 W
Convert 110 Volts To Watts 5 A 550 W
Convert 115 Volts To Watts 5 A 575 W

Volts To Watts Conversion Chart

Next, we will list more data on converting volts to watts under different currents for your reference:

1 Volt Is Equal To How Many Watts?

According to the formula P = VI, we know that 1 volt does not equate to a fixed amount of watts; it depends on the current value or resistance in the circuit. The power consumed varies with different current values, as shown in the table below:

Volts (V) Amp (A) Watts (W)
1 V 1 A 1 W
1 V 2 A 2 W
1 V 3 A 3 W
1 V 4 A 4 W
1 V 5 A 5 W

How Many Watts Is 5 Volts?

Volts (V) Amp (A) Watts (W)
5 V 1 A 5 W
5 V 2 A 10 W
5 V 3 A 15 W
5 V 4 A 20 W
5 V 5 A 25 W

How Many Watts Are In 12 Volts? 

How Many Watts Is 3 Amps At 12 Volts? 

P = 12 V x 3 A = 36 W

How Many Watts Is 5 Amps At 12 Volts?  

P = 12 V x 5 A = 60 W

How Many Watts Is 10 Amps At 12 Volts?  

P = 12 V x 10 A = 120 W

How Many Watts Is 15 Amps At 120 Volts? 

P = 12 V x 15 A = 180 W

How Many Watts Is 30 Amps At 12 Volts?  

P = 12 V x 30 A = 360 W

Volts (V) Amp (A) Watts (W)
12 V 3 A 36 W
12 V 5 A 60 W
12 V 10 A 120 W
12 V 15 A 180 W
12 V 30 A 360 W

110 Volts Is Equal To How Many Watts?

Volts (V) Amp (A) Watts (W)
110 V 1 A 110 W
110 V 2 A 220 W
110 V 3 A 330 W
110 V 4 A 440 W
110 V 5 A 550 W

How Many Watts Are In 220 Volts?

How Many Watts In 1 Amp At 220 Volts?  

P = 220V x 1A = 220 W

How Many Watts In 6 Amp At 220 Volts? 

P = 220V x 6A = 1320 W

How Many Watts In 15 Amps At 220 Volts? 

P = 220V x 15A = 3300 W

How Many Watts In 100 Amps At 220 Volts? 

P = 220V x 100A = 22000 W

Volts (V) Amp (A) Watts (W)
220 V 1 A 220 W
220 V 6 A 1320 W
220 V 15 A 3300 W
220 V 30 A 6600 W
220 V 100 A 22000 W

What Is 240 Volts In Watts?

How Many Watts In 1 Amp At 240 Volts? 

P = 240V x 1A = 240 W

How Many Watts Is 13 Amps At 240 Volts?

P = 240V x 13A = 3120 W

How Many Watts Is 16 Amps At 240 Volts?

P = 240V x 16A = 3840 W

How Many Watts Is 32 Amps At 240 Volts?

P = 240V x 32A = 7680 W

How Many Watts Is 40 Amps At 240 Volts?

P = 240V x 40A = 9600 W

Volts (V) Amp (A) Watts (W)
240 V 1 A 240 W
240 V 13 A 3120 W
240 V 16 A 3840 W
240 V 32 A 7680 W
240 V 40 A 9600 W

How To Convert Watts To Volts?

To convert watts to volts, we also need to use the parameter of current.

Watts To Volts Conversion Formulas

To get the answer, plug the values of power and current into this formula:

V = P / I

V is the voltage in volts (Volt),

P is the power in watts (Watt),

I is the current in amperes (Ampere).

Watts To Volts Conversion Examples

Assuming an appliance has a power rating of 50 watts and a current of 2 amperes, then:

V = P / I = 50W / 2A = 25V

This means that a voltage of 25 volts is required to produce a power of 50 watts under a current of 2 amperes.

Watts To Volts Conversion Chart

According to the formula V = P / I, it is clear that power alone cannot be directly converted into voltage. We need to first determine the current value. For ease of calculation, we assume that the current in the circuit is 2 amperes. Of course, you can also replace the 2 amperes with the actual current value.

Watts (W) Amp (A) Volts (V)
How Many Volts In 10 Watts 2 A 5 V
How Many Volts In 12 Watts 2 A 6 V
How Many Volts Is 18 Watts 2 A 9 V
How Many Volts In 20 Watts 2 A 10 V
How Many Volts In 40 Watts 2 A 20 V
How Many Volts Is 60 Watts 2 A 30 V
How Many Volts Is 100 Watts 2 A 50 V
How Many Volts Is 200 Watts 2 A 100 V
How Many Volts In 220 Watts 2 A 110 V

Watts (W) Amp (A) Volts (V)
How Many Volts In 500 Watts 2 A 250 V
How Many Volts In 600 Watts 2 A 300 V
How Many Volts Is 650 Watts 2 A 325 V
How Many Volts In 1000 Watts 2 A 500 V
How Many Volts In 2000 Watts 2 A 1000 V
How Many Volts Is 4000 Watts 2 A 2000 V
How Many Volts Is 5000 Watts 2 A 2500 V

FAQ

Why Convert Volts to Watts? 

Understanding the conversion relationship between volts and watts is not only a theoretical requirement in fields such as electrical engineering but also an indispensable part of practical applications. Personnel familiar with this conversion can enhance the efficiency, safety, and cost-effectiveness of systems. For example, in the design of electronic devices and electrical systems, it is essential to consider voltage and power to ensure that the equipment operates normally and does not overload.

Conclusion

Understanding the definitions of volts and watts, as well as their conversion relationships, is very meaningful. It not only enriches our knowledge but also helps us use electrical systems more safely and efficiently in our daily lives. For instance, introducing a solar energy storage system can make your electricity usage more independent. If you are considering off-grid power solutions, please feel free to contact us.