MeasureCalc

Convert Calorie (cal) to Kilowatt-hour (kWh)

Category: Energy

1E-06 kwh

1 cal = 1E-06 kwh

High-precision rounding: 6 decimals

How to convert calorie (cal) to kilowatt-hour (kwh)

Energy is the capacity to do work. Joules form the SI base; Wh/kWh align with metering and batteries; calories and BTU survive in nutrition and HVAC. Conversions bridge mechanical, thermal, and electrical perspectives.

This converter calculates Calorie (cal) to Kilowatt-hour (kWh) values by using the correct conversion rule for the Energy category. For linear units, standardized factors are used. For temperature, the calculator applies the proper formula with offsets.

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Quick conversion table

Handy values for Calorie (cal) to Kilowatt-hour (kWh). Click a value to open that exact result.

Calorie (cal) Kilowatt-hour (kWh)
1 1E-06
0.5 1E-06
2.5 3E-06
10 1.2E-05

Conversion formula

Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).

Common mistakes

  • Confusing calorie (cal) with kilocalorie (kcal) on nutrition labels.
  • Treating BTU definitions interchangeably without noting standard (IT vs other).

Unit facts

  • Calorie (cal): A small calorie (cal) heats 1 g of water by 1 °C; nutrition ‘Calorie’ means kilocalorie (kcal).
  • Kilowatt-hour (kWh): Kilowatt-hour (kWh) = 1,000 Wh = 3.6 MJ; main electricity billing unit.

About Calorie (cal)

Calorie (cal)

Energy to raise 1 g of water by 1 °C; several legacy variants exist. In nutrition, ‘calorie’ often means kilocalorie.

History: Thermochemistry used multiple definitions; modern practice relates calories to joules (1 cal ≈ 4.184 J).

About Kilowatt-hour (kWh)

Kilowatt-hour (kWh)

Equals 1,000 Wh. Used by utilities and home energy monitoring; easy to relate to monthly costs.

History: Standard billing unit; maps neatly to real-world appliance usage and tariffs.

Frequently asked questions

How many Kilowatt-hour (kWh) are in one Calorie (cal)?
1 Calorie (cal) equals 1E-06 Kilowatt-hour (kWh).
Is Calorie (cal) to Kilowatt-hour (kWh) conversion exact?
Many unit conversions are exact by definition, while others use standardized conversion constants.
What is the fastest way to convert Calorie (cal) to Kilowatt-hour (kWh)?
Enter a value in Calorie (cal), choose Kilowatt-hour (kWh) as the target unit, and the calculator will instantly return the result.

Convert Calorie (cal) to other units

Convert other units to Kilowatt-hour (kWh)