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Watts to Joules Per Second

To convert watts to joules per second, multiply by 1.

Published by Quirkulator · AI and automation disclosure · Report an error

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YOUR RESULT
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Converted value
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Your result updates live as you type.

To convert watts to joules per second, multiply by 1.

The calculation uses 1 W = 1 J/s. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.

The formula

value in J/s = value in W × 1
W
Input unit: watts
J/s
Output unit: joules per second

How to use this calculator

  1. Enter a value in W.
  2. Multiply by the stored conversion factor.
  3. Read the result in J/s; divide by the same factor to convert back.

Worked examples

Worked conversion

1 W × 1 ≈ 1 J/s.

Reverse conversion

1 J/s ÷ 1 ≈ 1 W. Rounding intermediate values can change the last displayed digit.

Frequently asked questions

What factor does this converter use?

It uses 1 J/s per W.

Why can another converter show a slightly different answer?

Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.

W to J/s table

WJ/s (rounded)
00
11
22
55
1010
100100

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