Convert Kilocalories to Kilowatt-hours
1 kilocalorie (kcal) equals 0.001162222222 kilowatt-hours (kWh).
1 kcal = 0.001162222222 kWh
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilocalorie to kilowatt-hour converter to paste a column from Excel.
How to Convert Kilocalorie to Kilowatt-hour
- 1 kcal = 0.001162222222 kWh
- 1 kWh = 860.4206501 kcal
- Example: convert 15 kcal to kWh: 15 kcal = 15 × 0.001162222222 kWh = 0.01743333333 kWh
Reference conditions. kcal: Thermochemical kilocalorie (food Calorie), 4184 J exactly.
Formula
kWh = kcal × 0.001162222222222
or kWh = kcal ÷ 860.4206500956
Derivation from SI units:
- 1 kcal = 1000 cal = 4184 J (exact)
- 1 kWh = 1000 W × 3600 s = 3.6 × 10⁶ J
- 1 kcal = 4184 J ÷ 3600000 J per kWh = 0.001162222222222 kWh
Both units are defined exactly, so the factor is exact. Kilocalorie definition: kilocalorie; Kilowatt-hour definition: kilowatt-hour.
Worked examples
- A reading of 200 kcal converts to 0.2324444444 kWh.
200 kcal × 0.001162222222 = 0.2324444444 kWh - A value of 1500 kcal is 1.743333333 kWh.
1500 kcal × 0.001162222222 = 1.743333333 kWh
Kilocalorie to Kilowatt-hour conversion table
| Kilocalories (kcal) | Kilowatt-hours (kWh) |
|---|---|
| 1 kcal | 0.001162222222 kWh |
| 50 kcal | 0.05811111111 kWh |
| 100 kcal | 0.1162222222 kWh |
| 150 kcal | 0.1743333333 kWh |
| 200 kcal | 0.2324444444 kWh |
| 250 kcal | 0.2905555556 kWh |
| 300 kcal | 0.3486666667 kWh |
| 500 kcal | 0.5811111111 kWh |
| 1000 kcal | 1.162222222 kWh |
| 1500 kcal | 1.743333333 kWh |
| 2000 kcal | 2.324444444 kWh |
| 2500 kcal | 2.905555556 kWh |
| 3000 kcal | 3.486666667 kWh |
| 3500 kcal | 4.067777778 kWh |
Where it's used
Kilocalories are used for food and diet energy (2000 kcal reference intake), while kilowatt-hours appear in electricity bills and meters. Both measure energy, work and heat, so the conversion is a fixed factor.
Kilocalorie to other energy units
| Conversion | 1 kcal equals |
|---|---|
| kilocalorie to joule | 4184 J |
| kilocalorie to kilojoule | 4.184 kJ |
| kilocalorie to megajoule | 0.004184 MJ |
| kilocalorie to calorie | 1000 cal |
| kilocalorie to watt-hour | 1.162222222 Wh |
| kilocalorie to kilowatt-hour | 0.001162222222 kWh |
| kilocalorie to BTU | 3.965666831 BTU |
| kilocalorie to therm | 0.00003966613703 thm |
| kilocalorie to electronvolt | 2.611447397 × 10²² eV |
| kilocalorie to foot-pound | 3085.960033 ft·lbf |
| kilocalorie to erg | 41840000000 erg |
Frequently asked questions
How many kilowatt-hours are in 1 kilocalorie?
1 kcal = 0.001162222222 kWh.
How do I convert kilocalories to kilowatt-hours?
Multiply the value in kcal by 0.001162222222, or divide it by 860.4206501. For example, 15 kcal × 0.001162222222 = 0.01743333333 kWh.
Is the kcal to kWh conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kilocalorie (thermochemical)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kilowatt hour (kW·h)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Kilocalories to Kilowatt-hours. Retrieved October 17, 2026, from https://scientificconverters.com/energy/kilocalories-to-kilowatt-hours/
IEEE
Scientific Converters, "Convert Kilocalories to Kilowatt-hours," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/energy/kilocalories-to-kilowatt-hours/