Power and Energy
caltoWh
Convert thermochemical calories (cal) to watt-hours (Wh).
Factor1 cal = 0.001162222 Wh
Converter
cal
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Wh
Rendered to 6 significant figures.
Formula
Formula
Wh = cal × 0.001162222
Multiply any value in thermochemical calories by 0.001162222 to obtain the value in watt-hours.
Worked example
Convert 1000 cal to Wh.
- 01Start with 1000 cal.
- 02Multiply by the conversion factor: 1000 × 0.001162222 = 1.16222 Wh.
Result1000 cal = 1.16222 Wh
Conversion table
| cal | Wh |
|---|---|
| 1 | 0.0011622 |
| 2 | 0.0023244 |
| 5 | 0.0058111 |
| 10 | 0.011622 |
| 20 | 0.023244 |
| 50 | 0.058111 |
| 100 | 0.11622 |
| 200 | 0.23244 |
| 500 | 0.58111 |
| 1000 | 1.1622 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cal to Wh?
1 cal equals 0.001162222 Wh. To convert, multiply the value in thermochemical calories by 0.001162222.
How do I convert 1 cal to Wh?
1 cal = 0.00116222 Wh. For any value, multiply by 0.001162222.
How do I convert Wh back to cal?
Divide by the same factor — or equivalently, multiply by 860.4207. So 1 Wh = 860.421 cal.
When would I need to convert thermochemical calorie to watt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).