Convert Watt-hour (Wh) (wh) to Kilocalorie (kcal) (kcal)
Category: Energy
1 wh = 0.860421 kcal
High-precision rounding: 6 decimals
How to convert watt-hour (wh) to kilocalorie (kcal)
We convert by pivoting through the SI base unit for Energy and applying exact factors where applicable.
Share this conversion: /convert/watt-hour-to-kilocalorie
Quick conversion table
Handy values for Watt-hour (Wh) → Kilocalorie (kcal). 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
- Watt-hour (Wh): Watt-hour (Wh) is energy used by 1 watt for 1 hour (3,600 J); used for batteries.
- Kilocalorie (kcal): A kilocalorie (kcal) equals 4,184 J; standard on food labels.
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 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.
About Kilocalorie (kcal)
Kilocalorie (kcal)
Equals 1,000 cal; labeled as ‘Calorie’ on food packaging. Converts to joules for scientific comparisons.
History: Nutrition science standardized kcal for daily intake guidelines and labels.
Related conversions from wh
Related conversions to kcal
- btu → kcal BTU (IT)
- cal → kcal Calorie (cal)
- j → kcal Joule (J)
- kwh → kcal Kilowatt-hour (kWh)