Gigajoules to Watt-seconds Conversion

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

Results in Watt-seconds:
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1 GJ = 1,000,000,000 Ws

How to Convert Gigajoules to Watt-seconds

To convert a gigajoule measurement to a watt-second measurement, multiply the energy by the conversion ratio.

Since one gigajoule is equal to 1,000,000,000 watt-seconds, you can use this simple formula to convert:

watt-seconds = gigajoules × 1,000,000,000

The energy in watt-seconds is equal to the gigajoules multiplied by 1,000,000,000.

For example, here's how to convert 5 gigajoules to watt-seconds using the formula above.
5 GJ = (5 × 1,000,000,000) = 5,000,000,000 Ws

How Many Watt-seconds Are in a Gigajoule?

There are 1,000,000,000 watt-seconds in a gigajoule, which is why we use this value in the formula above.

1 GJ = 1,000,000,000 Ws

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


One gigajoule is equal to 1,000,000,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The gigajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "giga" is the prefix for 109. Gigajoules can be abbreviated as GJ; for example, 1 gigajoule can be written as 1 GJ.


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 are usually abbreviated as Ws, although the formally adopted expression is W·s. The abbreviation W s is also sometimes used. For example, 1 watt-second can be written as 1 Ws, 1 W·s, or 1 W s.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]

Gigajoule to Watt-second Conversion Table

Gigajoule measurements converted to watt-seconds
Gigajoules Watt-seconds
0.000000001 GJ 1 Ws
0.000000002 GJ 2 Ws
0.000000003 GJ 3 Ws
0.000000004 GJ 4 Ws
0.000000005 GJ 5 Ws
0.000000006 GJ 6 Ws
0.000000007 GJ 7 Ws
0.000000008 GJ 8 Ws
0.000000009 GJ 9 Ws
0.0000000001 GJ 0.1 Ws
0.000000001 GJ 1 Ws
0.00000001 GJ 10 Ws
0.0000001 GJ 100 Ws
0.000001 GJ 1,000 Ws
0.00001 GJ 10,000 Ws
0.0001 GJ 100,000 Ws
0.001 GJ 1,000,000 Ws
0.01 GJ 10,000,000 Ws
0.1 GJ 100,000,000 Ws
1 GJ 1,000,000,000 Ws


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,

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