Megajoules to Watt-Seconds Conversion (MJ to Ws)

Megajoules to Watt-Seconds Converter

Enter the energy in megajoules below to convert it to watt-seconds.

Result in Watt-Seconds:

1 MJ = 1,000,000 Ws

How to Convert Megajoules to Watt-Seconds

To convert a measurement in megajoules to a measurement in watt-seconds, multiply the energy by the following conversion ratio: 1,000,000 watt-seconds/megajoule.

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

watt-seconds = megajoules × 1,000,000

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

For example, here's how to convert 5 megajoules to watt-seconds using the formula above.

watt-seconds = (5 MJ × 1,000,000) = 5,000,000 Ws

How Many Watt-Seconds Are in a Megajoule?

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

1 MJ = 1,000,000 Ws

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

What Is a Megajoule?

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

The megajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "mega" is the prefix for millions, or 10⁶. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ.

Learn more about megajoules.

What Is a Watt-Second?

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]

Learn more about watt-seconds.

Megajoule to Watt-Second Conversion Table

Table showing various megajoule measurements converted to watt-seconds.
Megajoules	Watt-seconds
0.000001 MJ	1 Ws
0.000002 MJ	2 Ws
0.000003 MJ	3 Ws
0.000004 MJ	4 Ws
0.000005 MJ	5 Ws
0.000006 MJ	6 Ws
0.000007 MJ	7 Ws
0.000008 MJ	8 Ws
0.000009 MJ	9 Ws
0.0000001 MJ	0.1 Ws
0.000001 MJ	1 Ws
0.00001 MJ	10 Ws
0.0001 MJ	100 Ws
0.001 MJ	1,000 Ws
0.01 MJ	10,000 Ws
0.1 MJ	100,000 Ws
1 MJ	1,000,000 Ws

Table showing various megajoule measurements converted to watt-seconds.

Megajoules

Watt-seconds

0.000001 MJ

1 Ws

0.000002 MJ

2 Ws

0.000003 MJ

3 Ws

0.000004 MJ

4 Ws

0.000005 MJ

5 Ws

0.000006 MJ

6 Ws

0.000007 MJ

7 Ws

0.000008 MJ

8 Ws

0.000009 MJ

9 Ws

0.0000001 MJ

0.1 Ws

0.000001 MJ

1 Ws

0.00001 MJ

10 Ws

0.0001 MJ

100 Ws

0.001 MJ

1,000 Ws

0.01 MJ

10,000 Ws

0.1 MJ

100,000 Ws

1 MJ

1,000,000 Ws

References

Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf