Convert Joules to Watt-seconds

Enter the energy in joules below to get the value converted to watt-seconds.

Results in Watt-seconds:
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1 J = 1 Ws

How to Convert Joules to Watt-seconds

To convert a joule measurement to a watt-second measurement, multiply the energy by the conversion ratio. One joule is equal to 1 watt-second, so use this simple formula to convert:

watt-seconds = joules × 1

The energy in watt-seconds is equal to the joules multiplied by 1.

For example, here's how to convert 5 joules to watt-seconds using the formula above.
5 J = (5 × 1) = 5 Ws

Joules and watt-seconds are both units used to measure energy. Keep reading to learn more about each unit of measure.


The joule is the energy equal to the force on an object of one newton at a distance of one meter. One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as J, for example 1 joule can be written as 1 J.


The watt-second is a measure of electrical energy equal to one watt of power over a one second period. One watt-second is equal to 1/3,600 of a watt-hour or one joule.

Watt-seconds can be abbreviated as Ws, for example 1 watt-second can be written as 1 Ws.

Joule Measurements and Equivalent Watt-second Conversions

Common joule values converted to the equivalent watt-second value
Joules Watt-seconds
1 J 1 Ws
2 J 2 Ws
3 J 3 Ws
4 J 4 Ws
5 J 5 Ws
6 J 6 Ws
7 J 7 Ws
8 J 8 Ws
9 J 9 Ws
10 J 10 Ws
11 J 11 Ws
12 J 12 Ws
13 J 13 Ws
14 J 14 Ws
15 J 15 Ws
16 J 16 Ws
17 J 17 Ws
18 J 18 Ws
19 J 19 Ws
20 J 20 Ws
21 J 21 Ws
22 J 22 Ws
23 J 23 Ws
24 J 24 Ws
25 J 25 Ws
26 J 26 Ws
27 J 27 Ws
28 J 28 Ws
29 J 29 Ws
30 J 30 Ws
31 J 31 Ws
32 J 32 Ws
33 J 33 Ws
34 J 34 Ws
35 J 35 Ws
36 J 36 Ws
37 J 37 Ws
38 J 38 Ws
39 J 39 Ws
40 J 40 Ws

More Joule Energy Conversions

Convert to Kilojoules
1 J is equal to 0.001 kilojoules
Convert to Megajoules
1 J is equal to 1.0E-6 megajoules
Convert to Gigajoules
1 J is equal to 1.0E-9 gigajoules
Convert to Calories
1 J is equal to 0.239006 calories
Convert to Kilocalories
1 J is equal to 0.000239 kilocalories
Convert to Megacalories
1 J is equal to 2.3901E-7 megacalories
Watts x Time
Convert to Watt-hours
1 J is equal to 0.000278 watt-hours
Convert to Kilowatt-hours
1 J is equal to 2.7778E-7 kilowatt-hours
Convert to Megawatt-hours
1 J is equal to 2.7778E-10 megawatt-hours
Thermal Units
Convert to British Thermal Units
1 J is equal to 0.000948 british thermal units
Convert to Million BTU
1 J is equal to 9.4782E-10 million BTU
Convert to Therms
1 J is equal to 9.4782E-9 therms
Convert to Quads
1 J is equal to 9.4782E-19 quads
Convert to Electronvolts
1 J is equal to 6,241,500,000,000,000,000 electronvolts
Convert to Kiloelectronvolts
1 J is equal to 6,241,500,000,000,000 kiloelectronvolts
Convert to Megaelectronvolts
1 J is equal to 6,241,509,343,260.2 megaelectronvolts