Calories To Watt Seconds Conversion


1 cal = 4.1868 Ws

Want to convert from watt seconds to calories instead?

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How to convert calories to watt seconds (cal to Ws)

The formula for converting calories to watt seconds is: Ws = cal × 4.1868. To calculate the calorie value in watt seconds first substitute the calorie value into the preceding formula, and then perform the calculation. If we wanted to calculate 1 calorie in watt seconds we follow these steps:

Ws = cal × 4.1868

Ws = 1 × 4.1868

Ws = 4.1868

In other words, 1 calorie is equal to 4.1868 watt seconds.

Example Conversion

Let's take a look at an example. The step-by-step process to convert 9 calories to watt seconds is:

  1. Understand the conversion formula: Ws = cal × 4.1868
  2. Substitute the required value. In this case we substitute 9 for cal so the formula becomes: Ws = 9 × 4.1868
  3. Calculate the result using the provided values. In our example the result is: 9 × 4.1868 = 37.6812 Ws

In summary, 9 calories is equal to 37.6812 watt seconds.

Converting watt seconds to calories

In order to convert the other way around i.e. watt seconds to calories, you would use the following formula: cal = Ws × 0.2390057361. To convert watt seconds to calories first substitute the watt second value into the above formula, and then execute the calculation. If we wanted to calculate 1 watt second in calories we follow these steps:

cal = Ws × 0.2390057361

cal = 1 × 0.2390057361

cal = 0.2390057361

Or in other words, 1 watt second is equal to 0.2390057361 calories.

Conversion Unit Definitions

What is a Calorie?

A calorie (cal) is a unit of energy commonly used in nutrition. It represents the amount of energy required to raise the temperature of one gram of water by one degree Celsius (or one degree Kelvin). In the context of nutrition, the term "calorie" usually refers to a kilocalorie, which is equal to 1,000 calories in scientific terms.
The energy content of food and beverages is often measured in kilocalories, abbreviated as kcal or Cal (with an uppercase "C" to distinguish it from the smaller "cal" used in physics).
In scientific terms, 1 kilocalorie is equal to 4.184 kilojoules (kJ). The conversion factor between kilocalories (kcal) and kilojoules (kJ) is 1 kcal = 4.184 kJ.
In everyday language, when people refer to the number of calories in food, they are usually referring to kilocalories. For example, if a food label says a serving contains 200 calories, it means 200 kilocalories or 200,000 calories in scientific terms.

What is a Watt Second?

A watt-second (Ws), also known as a joule (J), is a unit of energy in the International System of Units (SI). It represents one watt of power expended for one second. Mathematically, it can be defined as: 1 watt-second (Ws) = 1 watt (W) × 1second (s) = 1 joule (J).
Watt-seconds are used to measure the energy consumed or produced by electronic devices or electrical systems in a very short amount of time. For example, the energy released by a camera flash, the energy stored in capacitors, or the energy consumed by a small electronic circuit during its operation can be measured in watt-seconds.
In practical terms, a watt-second is a relatively small unit of energy. To provide some context, 1 watt-second is equivalent to the energy required to power a 1-watt device for 1 second.

Calories To Watt Seconds Conversion Table

Below is a lookup table showing common calories to watt seconds conversion values.

Calorie (cal)Watt Second (Ws)
1 cal4.1868 Ws
2 cal8.3736 Ws
3 cal12.5604 Ws
4 cal16.7472 Ws
5 cal20.934 Ws
6 cal25.1208 Ws
7 cal29.3076 Ws
8 cal33.4944 Ws
9 cal37.6812 Ws
10 cal41.868 Ws
11 cal46.0548 Ws
12 cal50.2416 Ws
13 cal54.4284 Ws

Other Common Calorie Conversions

Below is a table of common conversions from calories to other energy units.

1 calorie in ergs41868000 erg
1 calorie in joules4.1868 J
1 calorie in kilojoules0.0041868 kJ
1 calorie in megajoules0.0000041868 MJ
1 calorie in gigajoules0.0000000041868 GJ
1 calorie in kilocalories0.001 kcal
1 calorie in megacalories0.000001 Mcal
1 calorie in watt hours0.0011622222 Wh
1 calorie in kilowatt hours0.0000011622222 kWh
1 calorie in btus0.0039652608749183 Btu
1 calorie in electron volts26131952590564000000 eV