Joules To Watt Seconds Conversion


1 J = 1 Ws

Want to convert from watt seconds to joules instead?

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

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

Ws = J × 1

Ws = 1 × 1

Ws = 1

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

Example Conversion

Let's take a look at an example. The step-by-step process to convert 9 joules to watt seconds is:

  1. Understand the conversion formula: Ws = J × 1
  2. Substitute the required value. In this case we substitute 9 for J so the formula becomes: Ws = 9 × 1
  3. Calculate the result using the provided values. In our example the result is: 9 × 1 = 9 Ws

In summary, 9 joules is equal to 9 watt seconds.

Converting watt seconds to joules

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

J = Ws × 1

J = 1 × 1

J = 1

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

Conversion Unit Definitions

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.

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.

Joules To Watt Seconds Conversion Table

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

Joules (J)Watt Second (Ws)
1 J1 Ws
2 J2 Ws
3 J3 Ws
4 J4 Ws
5 J5 Ws
6 J6 Ws
7 J7 Ws
8 J8 Ws
9 J9 Ws
10 J10 Ws
11 J11 Ws
12 J12 Ws
13 J13 Ws

Other Common Joule Conversions

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

1 joule in ergs10000000 erg
1 joule in kilojoules0.001 kJ
1 joule in megajoules0.000001 MJ
1 joule in gigajoules0.000000001 GJ
1 joule in calories0.2388458966275 cal
1 joule in kilocalories0.0002388458966275 kcal
1 joule in watt hours0.00027777777777778 Wh
1 joule in kilowatt hours0.00000027777777777778 kWh
1 joule in megawatt hours0.00000000027777777777778 MWh
1 joule in btus0.00094708628903179 Btu
1 joule in electron volts6241509074461000000 eV
1 joule in kilo electron volts6241509074461000 keV