Watts to Joules
Power converter

Watts to Joules per Second Calculator

One watt is exactly one joule per second — see the direct equivalence.

W

How Watts to Joules per Second works

A watt is defined as one joule of energy transferred per second. That means watts and joules per second are the same quantity — converting between them is a one-to-one identity, so 60 W is simply 60 J/s.

This is why you cannot convert a plain watt figure into a total energy amount in joules without a time period: watts already express a rate (joules per second). Multiply by the number of seconds to get total joules.

Formula
11 W = 1 J/s

Power in watts equals energy flow in joules per second.

Watts to Joules per Second conversion table

Reference Table5 rows
Watts and their identical joules-per-second value, with per-minute and per-hour totals.
Power↕Joules per second↕Joules per minute↕Joules per hour↕
1 W
1 J/s
60 J/min
3,600 J/h
10 W
10 J/s
600 J/min
36,000 J/h
60 W
60 J/s
3,600 J/min
216,000 J/h
100 W
100 J/s
6,000 J/min
360,000 J/h
1,000 W
1,000 J/s
60,000 J/min
3,600,000 J/h
💡 Click any row to auto-fill the calculator aboveClick column headers to sort

FAQ: Watts to Joules per Second

How many joules per second is a watt?

Exactly one. One watt is defined as one joule per second (1 W = 1 J/s), so the numeric value never changes — 500 W is 500 J/s.

Is a watt the same as a joule per second?

Yes. The watt is the SI unit of power and is defined as one joule per second. They measure the same thing: the rate of energy transfer.

How do I convert watts to joules per second?

No calculation is needed — the value is identical. A power of 75 W equals 75 J/s. To get total joules instead, multiply the watts by the time in seconds.

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