cal to Wh Converter - Calorie to Watt-hour
Calorie (cal) to Watt-hour (Wh)
Direct answer
1 cal = 0.001162222222 Wh
Wh = cal × 0.001162222222
Converter
Conversion formula
Wh = cal × 0.001162222222
cal = Wh × 860.420650096
Example: 10 cal = 10 × 0.001162222222 = 0.011622222222 Wh.
Common conversion table
| cal | Wh |
|---|---|
| 1 cal | 0.001162222222 Wh |
| 2 cal | 0.002324444444 Wh |
| 5 cal | 0.005811111111 Wh |
| 10 cal | 0.011622222222 Wh |
| 20 cal | 0.023244444444 Wh |
| 50 cal | 0.058111111111 Wh |
| 100 cal | 0.116222222222 Wh |
| 1,000 cal | 1.16222222222 Wh |
Conversion derivation
Express both cal and Wh in the same base unit J (joule), then cancel the shared base unit.
- 1
Rewrite cal 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.
Calorie to Watt-hour conversion
The conversion factor relates calories and watt-hours by expressing both units in the base unit of energy, the joule, and then deriving the direct ratio.
Definition
A calorie (cal) is defined as 4.184 joules, and a watt-hour (Wh) is defined as 3,600 joules.
Principle
To convert between the two, each unit is rewritten in joules, allowing the joule units to cancel when forming the ratio that gives the conversion factor.
Assumptions
- The conversion uses the thermochemical calorie, which is exactly 4.184 joules.
- The watt-hour is defined as the energy expended by one watt of power in one hour.
Cautions
- Different calorie definitions (e.g., nutritional Calorie) use different joule equivalents.
- Rounding the factor for practical use may affect precision.
FAQ
How many Wh are in 1 cal?
1 cal = 0.001162222222 Wh.
How many Wh are in 10 cal?
10 cal = 0.011622222222 Wh.
How many Wh are in 100 cal?
100 cal = 0.116222222222 Wh.
What is the formula to convert cal to Wh?
Use Wh = cal × 0.001162222222.
How many cal are in 1 Wh?
1 Wh = 860.420650096 cal.
What should I check when converting cal to Wh?
Use the conversion factor and round the result to the precision required by your calculation.