Convert Calorie (cal) (cal) to Watt-hour (Wh) (wh)
Category: Energy
10 cal = 0.011622 wh
High-precision rounding: 6 decimals
How to convert calorie (cal) to watt-hour (wh)
We convert by pivoting through the SI base unit for Energy and applying exact factors where applicable.
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Quick conversion table
Handy values for Calorie (cal) → Watt-hour (Wh). Click a value to open that exact result.
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).
- Watt-hour (Wh): Watt-hour (Wh) is energy used by 1 watt for 1 hour (3,600 J); used for batteries.
About Energy
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.
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 Watt-hour (Wh)
Watt-hour (Wh)
Energy consumed by 1 W for 1 hour. Ubiquitous in batteries and electricity meters; 1 Wh = 3600 J.
History: Adopted in power systems because it mirrors billing intervals and storage capacities.
Related conversions from cal
- cal → btu BTU (IT)
- cal → j Joule (J)
- cal → kcal Kilocalorie (kcal)
- cal → kwh Kilowatt-hour (kWh)