Watt Seconds To Joules Conversion


1 Ws = 1 J

Want to convert from joules to watt seconds instead?

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How to convert watt seconds to joules (Ws to J)

The formula for converting watt seconds to joules is: J = Ws × 1. To calculate the watt second value in joules first substitute the watt second value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 watt second in joules we follow these steps:

J = Ws × 1

J = 1 × 1

J = 1

In other words, 1 watt second is equal to 1 joule.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 5 watt seconds to joules is:

  1. Understand the conversion formula: J = Ws × 1
  2. Substitute the required value. In this case we substitute 5 for Ws so the formula becomes: J = 5 × 1
  3. Calculate the result using the provided values. In our example the result is: 5 × 1 = 5 J

In summary, 5 watt seconds is equal to 5 joules.

Converting joules to watt seconds

In order to convert the other way around i.e. joules to watt seconds, you would use the following formula: Ws = J × 1. To convert joules to watt seconds first substitute the joule value into the above formula, and then execute the calculation. If we wanted to calculate 1 joule in watt seconds we follow these steps:

Ws = J × 1

Ws = 1 × 1

Ws = 1

Or in other words, 1 joule is equal to 1 watt second.

Conversion Unit Definitions

What is a Watt Second?

A watt-second (Ws), also known as a joule (J), is a unit of energy in the International System of Units (SI). It represents one watt of power expended for one second. Mathematically, it can be defined as: 1 watt-second (Ws) = 1 watt (W) × 1second (s) = 1 joule (J).
Watt-seconds are used to measure the energy consumed or produced by electronic devices or electrical systems in a very short amount of time. For example, the energy released by a camera flash, the energy stored in capacitors, or the energy consumed by a small electronic circuit during its operation can be measured in watt-seconds.
In practical terms, a watt-second is a relatively small unit of energy. To provide some context, 1 watt-second is equivalent to the energy required to power a 1-watt device for 1 second.

What is a Joule?

A joule (J) is the standard unit of energy in the International System of Units (SI). It is defined as the amount of work done when a force of one newton is applied over a distance of one meter in the direction of the force. In other words, one joule is equal to the energy transferred when one watt of power is dissipated for one second.
Mathematically, 1 joule is equal to 1 N × 1 m, or 1 kg × m2/s2 in terms of mass, length, and time.
Joules are a versatile unit of measurement used not only in physics but also in various fields including engineering, chemistry, and biology to quantify energy, work, and heat. For example, it's commonly used to express the energy content of foods, the capacity of batteries, and the energy output of electronic devices.

Watt Seconds To Joules Conversion Table

Below is a lookup table showing common watt seconds to joules conversion values.

Watt Second (Ws)Joules (J)
1 Ws1 J
2 Ws2 J
3 Ws3 J
4 Ws4 J
5 Ws5 J
6 Ws6 J
7 Ws7 J
8 Ws8 J
9 Ws9 J
10 Ws10 J
11 Ws11 J
12 Ws12 J
13 Ws13 J

Other Common Watt Second Conversions

Below is a table of common conversions from watt seconds to other energy units.

1 watt second in kilojoules0.001 kJ
1 watt second in gigajoules0.000000001 GJ
1 watt second in calories0.2390057361 cal
1 watt second in watt hours0.0002777778 Wh
1 watt second in kilowatt hours0.0000002777778 kWh
1 watt second in electron volts6241509647120400000 eV