Watts to Joules Converter

Enter Power (W):

Enter Time (s):

Table of Contents

How to Convert Watts (W) to Joules (J)

To convert watts (W) to joules (J), you need to account for time because:

Energy (J) = Power (W) × Time (s)

The energy E in joules (J) is equal to the power P in watts (W) multiplied by the time t in seconds (s):

E(J) = P(W) × t(s)

So joules are equal to watts multiplied by time:

J = W × t

If you have a power measurement of 100 W and you run it for 10 seconds, the calculation would be:

E(J) = 100 W × 10 s = 1000 J

Watts (W) represent the rate of energy transfer or conversion, indicating how much energy is used per unit of time.

Time (seconds) is the duration for which the power is applied, crucial for determining total energy consumed.

Joules (J) represent the total energy consumed or produced, calculated as the product of power and time.

Always consider the time duration when calculating energy consumption to get accurate results!

For more information on joules, visit the Wikipedia page on Joule.

Formula: J = W × Time (in seconds)

Watts [W]	Joules at 1s	Joules at 2s	Joules at 3s	Joules at 4s
1 W	1 J	2 J	3 J	4 J
5 W	5 J	10 J	15 J	20 J
10 W	10 J	20 J	30 J	40 J
15 W	15 J	30 J	45 J	60 J
20 W	20 J	40 J	60 J	80 J
25 W	25 J	50 J	75 J	100 J
30 W	30 J	60 J	90 J	120 J

Manish Kumar

Manish holds a B.Tech in Electrical and Electronics Engineering (EEE) and an M.Tech in Power Systems, with over 10 years of experience in Metro Rail Systems, specializing in advanced rail infrastructure. He is also a NASM-certified fitness and nutrition coach with more than a decade of experience in weightlifting and fat loss coaching. With expertise in gym-based training, lifting techniques, and biomechanics, Manish combines his technical mindset with his passion for fitness.