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Watt-seconds to Kilojoules conversion

Watt-seconds to Kilojoules conversion table

Watt-seconds (Ws)	Kilojoules (kJ)
0	0
1	0.001
2	0.002
3	0.003
4	0.004
5	0.005
6	0.006
7	0.007
8	0.008
9	0.009
10	0.01
20	0.02
30	0.03
40	0.04
50	0.05
60	0.06
70	0.07
80	0.08
90	0.09
100	0.1
1000	1

How to convert watt-seconds to kilojoules?

Certainly! Let's break down the conversion and some real-world examples.

Conversion of Watt-seconds to Kilojoules

1 Watt-second (W·s) is equivalent to 1 Joule (J). This is because a Watt is a unit of power, defined as 1 Joule per second.

To convert Joules to Kilojoules: $1 \text{ Joule} = 0.001 \text{ Kilojoules}$

Therefore: $1 \text{ Watt-second} = 1 \text{ Joule} = 0.001 \text{ Kilojoules}$

So, 1 W·s = 0.001 kJ.

Examples of Other Quantities

60 Watt-seconds to Kilojoules:

$60 \text{ W·s} = 60 \text{ J}$ $60 \text{ J} = 60 \times 0.001 \text{ kJ} = 0.06 \text{ kJ}$
1000 Watt-seconds to Kilojoules (i.e., 1 kilowatt-second):

$1000 \text{ W·s} = 1000 \text{ J}$ $1000 \text{ J} = 1000 \times 0.001 \text{ kJ} = 1 \text{ kJ}$

Real-world Examples:

A LED Light Bulb:
- A typical LED bulb consumes around 10 Watts. If the bulb runs for 1 second, it uses 10 Watt-seconds.
- Conversion to Kilojoules: $10 \text{ W·s} = 10 \text{ J} = 0.01 \text{ kJ}$
Battery Storage:
- A standard AA battery may store around 10,000 Joules.
- Conversion to Kilojoules: $10,000 \text{ J} = 10 \text{ kJ}$
Kinetic Energy of a Running Person:
- A person running at a speed of 5 m/s with a mass of 70 kg has a kinetic energy calculated as: $E = \frac{1}{2}mv^2 = \frac{1}{2}(70 \text{ kg})(5 \text{ m/s})^2 = 875 \text{ J}$
- Conversion to Kilojoules: $875 \text{ J} = 0.875 \text{ kJ}$
Charging a Smartphone:
- Suppose it takes approximately 18,000 Joules to fully charge a smartphone.
- Conversion to Kilojoules: $18,000 \text{ J} = 18 \text{ kJ}$

These examples illustrate how Watt-seconds (or Joules) are used to measure energy in various everyday contexts and how they can be converted to Kilojoules for different quantities.

See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Kilojoules to other unit conversions.

What is watt-seconds?

Watt-seconds, also known as joules (J), is a unit of energy. It represents the amount of energy expended or work done when 1 watt (a unit of power) is applied for 1 second.

In essence, it measures how much "oomph" or "energy punch" is delivered in that one-second period. Think of it as a way to quantify the total energy transferred by a source (like a light bulb) over a short duration.

What is kilojoules?

Kilojoules (kJ) are a unit of energy, specifically a measure of the amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius.

In other words, it's a way to quantify the amount of energy that something contains or releases. Kilojoules are commonly used in science, technology, and everyday life to express the energy content of various things, such as:

Foods: The energy content of foods is often listed in kilojoules (kJ) on nutrition labels.
Electrical appliances: The power consumption of devices like refrigerators or televisions is sometimes expressed in kilowatts (kW), which can be converted to kilojoules per second.
Chemical reactions: In chemistry, kilojoules are used to express the energy released or absorbed during chemical reactions.

To put it into perspective:

A typical snack bar might have around 400-600 kJ of energy content
A standard household light bulb uses about 60 W (which is equivalent to approximately 360 kJ per hour)
The kinetic energy of a human running at a moderate pace is around 500-700 kJ per minute

So, kilojoules are simply a way to measure and express the amount of energy in various forms.

Complete Watt-seconds conversion table

Enter # of Watt-seconds

Convert 1 Ws to other units	Result
Watt-seconds to Watt-minutes (Ws to Wm)	0.01666666666667
Watt-seconds to Watt-hours (Ws to Wh)	0.0002777777777778
Watt-seconds to Milliwatt-hours (Ws to mWh)	0.2777777777778
Watt-seconds to Kilowatt-hours (Ws to kWh)	2.7777777777778e-7
Watt-seconds to Megawatt-hours (Ws to MWh)	2.7777777777778e-10
Watt-seconds to Gigawatt-hours (Ws to GWh)	2.7777777777778e-13
Watt-seconds to Joules (Ws to J)	1
Watt-seconds to Kilojoules (Ws to kJ)	0.001
Watt-seconds to Megajoules (Ws to MJ)	0.000001
Watt-seconds to Gigajoules (Ws to GJ)	1e-9
Watt-seconds to calories (Ws to cal)	0.2390057361377
Watt-seconds to Kilocalories (Ws to kcal)	0.0002390057361377

Watt-seconds to Kilojoules conversion