Convert Calories to Kilowatt-Hours

The Conversion Formula

To convert calories to kilowatt-hours, multiply the value by the conversion factor: 1 cal = 0.00000116222 kWh. For a worked example, suppose you need to convert 25 cal to kilowatt-hours: 25 × 0.00000116222 = 0.0000290556 kWh. To convert in the opposite direction, divide by 0.00000116222, or equivalently multiply by 860420.65.

About calories

The calorie (lowercase c) was originally defined as the heat required to raise 1 gram of water by 1°C. It is a tiny unit, often called the 'gram calorie'. It is mostly used in chemistry and physics today, not for food. calories are commonly used in Chemistry experiments, Thermodynamics, Specific heat capacity, and Physics problems.

Heating 1 gram of water by 1°C takes 1 calorie.

About kilowatt-hours

The kilowatt-hour (kWh) is the unit of energy used to bill electricity. It is not a unit of power (kilowatts), but of energy: it is 1,000 watts of power sustained for one hour. One kWh equals exactly 3.6 million Joules. It was popularized by the electric utility industry as a unit easy for consumers to understand. kilowatt-hours are commonly used in Electric bills, Electric vehicle batteries, Solar panel output, and Home energy audits, Power plant generation.

Running a 1,000W microwave for one hour uses 1 kWh.

When Would You Convert calories to kilowatt-hours?

Converting between calories and kilowatt-hours is one of the most common energy conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 cal = 0.00000116222 kWh) memorized or bookmarked can save time in professional and everyday contexts alike.