kcal to Wh Converter - Kilocalorie to Watt-hour
Kilocalorie (kcal) to Watt-hour (Wh)
Direct answer
1 kcal = 1.16222222222 Wh
Wh = kcal × 1.16222222222
Converter
Conversion formula
Wh = kcal × 1.16222222222
kcal = Wh × 0.860420650096
Example: 10 kcal = 10 × 1.16222222222 = 11.6222222222 Wh.
Common conversion table
| kcal | Wh |
|---|---|
| 1 kcal | 1.16222222222 Wh |
| 2 kcal | 2.32444444444 Wh |
| 5 kcal | 5.81111111111 Wh |
| 10 kcal | 11.6222222222 Wh |
| 20 kcal | 23.2444444444 Wh |
| 50 kcal | 58.1111111111 Wh |
| 100 kcal | 116.222222222 Wh |
| 1,000 kcal | 1,162.22222222 Wh |
Conversion derivation
Express both kcal and Wh in the same base unit J (joule), then cancel the shared base unit.
- 1
Rewrite kcal in the base unit
- 2
Rewrite Wh in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Kilocalorie to Watt-hour conversion
This conversion factor is derived by expressing both the kilocalorie (kcal) and the watt-hour (Wh) in terms of the same base unit, the joule (J). The factor is the ratio of the joule equivalents of the two units.
Definition
A kilocalorie (kcal) is a unit of energy equal to 4,184 joules, based on the thermochemical calorie. A watt-hour (Wh) is a unit of energy equal to 3,600 joules, representing the energy consumed by one watt of power over one hour.
Principle
The conversion factor is calculated as the ratio of the joule equivalent of 1 kcal to the joule equivalent of 1 Wh. This gives the number of Wh per kcal.
Assumptions
- The conversion uses the thermochemical calorie definition, where 1 kcal = 4,184 J.
- The watt-hour is defined using the exact relationship 1 Wh = 3,600 J.
Cautions
- Other definitions of the calorie (e.g., the International Table calorie) exist, which use a slightly different joule equivalent. This conversion is specific to the 4,184 J/kcal value.
- The result should be rounded to the appropriate number of significant figures for the intended application.
FAQ
How many Wh are in 1 kcal?
1 kcal = 1.16222222222 Wh.
How many Wh are in 10 kcal?
10 kcal = 11.6222222222 Wh.
How many Wh are in 100 kcal?
100 kcal = 116.222222222 Wh.
What is the formula to convert kcal to Wh?
Use Wh = kcal × 1.16222222222.
How many kcal are in 1 Wh?
1 Wh = 0.860420650096 kcal.
What should I check when converting kcal to Wh?
Use the conversion factor and round the result to the precision required by your calculation.