# Watt-Seconds to Watt-Hours Converter

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

Results in Watt-Hours: 1 Ws = 0.000278 Wh

Do you want to convert watt-hours to watt-seconds?

## How to Convert Watt-Seconds to Watt-Hours

To convert a measurement in watt-seconds to a measurement in watt-hours, divide the energy by the following conversion ratio: 3,600 watt-seconds/watt-hour.

Since one watt-hour is equal to 3,600 watt-seconds, you can use this simple formula to convert:

watt-hours = watt-seconds ÷ 3,600

The energy in watt-hours is equal to the energy in watt-seconds divided by 3,600.

For example, here's how to convert 5,000 watt-seconds to watt-hours using the formula above.
watt-hours = (5,000 Ws ÷ 3,600) = 1.388889 Wh

## 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.

## What is a Watt-Hour?

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours are usually abbreviated as Wh, although the formally adopted expression is W·h. The abbreviation W h is also sometimes used. For example, 1 watt-hour can be written as 1 Wh, 1 W·h, or 1 W h.

## Watt-Second to Watt-Hour Conversion Table

Table showing various watt-second measurements converted to watt-hours.
Watt-seconds Watt-hours
1 Ws 0.000278 Wh
2 Ws 0.000556 Wh
3 Ws 0.000833 Wh
4 Ws 0.001111 Wh
5 Ws 0.001389 Wh
6 Ws 0.001667 Wh
7 Ws 0.001944 Wh
8 Ws 0.002222 Wh
9 Ws 0.0025 Wh
10 Ws 0.002778 Wh
20 Ws 0.005556 Wh
30 Ws 0.008333 Wh
40 Ws 0.011111 Wh
50 Ws 0.013889 Wh
60 Ws 0.016667 Wh
70 Ws 0.019444 Wh
80 Ws 0.022222 Wh
90 Ws 0.025 Wh
100 Ws 0.027778 Wh
200 Ws 0.055556 Wh
300 Ws 0.083333 Wh
400 Ws 0.111111 Wh
500 Ws 0.138889 Wh
600 Ws 0.166667 Wh
700 Ws 0.194444 Wh
800 Ws 0.222222 Wh
900 Ws 0.25 Wh
1,000 Ws 0.277778 Wh
2,000 Ws 0.555556 Wh
3,000 Ws 0.833333 Wh
4,000 Ws 1.1111 Wh
5,000 Ws 1.3889 Wh
6,000 Ws 1.6667 Wh
7,000 Ws 1.9444 Wh
8,000 Ws 2.2222 Wh
9,000 Ws 2.5 Wh
10,000 Ws 2.7778 Wh

## References

1. 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