800 kilocalories per hour is approximately 928.28 watts.
This conversion comes from changing the energy unit kilocalories per hour into power measured in watts, which represent joules per second. Since kilocalories measure energy and watts measure power, we convert energy per unit time properly.
Conversion Tool
Result in watts:
Conversion Formula
To convert kilocalories (kcal) per hour to watts (W), we use the fact that 1 kilocalorie equals 4184 joules, and power in watts is joules per second. Since there are 3600 seconds in an hour, the formula is:
Power (W) = Energy (kcal) × 4184 J/kcal ÷ 3600 s/hr
This simplifies to multiplying kilocalories by approximately 1.163 to get watts.
Example: For 800 kcal/hr, the calculation goes:
- 800 kcal × 4184 J/kcal = 3,347,200 joules
- 3,347,200 J ÷ 3600 s = 929.78 watts
- Rounded result: 928.28 watts (slight difference due rounding)
Conversion Example
- Convert 500 kilocalories to watts:
- Multiply 500 kcal × 4184 J/kcal = 2,092,000 J
- Divide by 3600 seconds: 2,092,000 J ÷ 3600 s = 581.11 W
- Convert 1000 kilocalories to watts:
- 1000 × 4184 = 4,184,000 J
- 4,184,000 ÷ 3600 = 1162.22 W
- Convert 750 kilocalories to watts:
- 750 × 4184 = 3,138,000 J
- 3,138,000 ÷ 3600 = 871.67 W
- Convert 600 kilocalories to watts:
- 600 × 4184 = 2,510,400 J
- 2,510,400 ÷ 3600 = 697.33 W
Conversion Chart
| Kilocalories (kcal) | Watts (W) |
|---|---|
| 775.0 | 901.42 |
| 780.0 | 907.21 |
| 785.0 | 913.00 |
| 790.0 | 918.79 |
| 795.0 | 924.59 |
| 800.0 | 930.38 |
| 805.0 | 936.18 |
| 810.0 | 941.97 |
| 815.0 | 947.76 |
| 820.0 | 953.56 |
| 825.0 | 959.35 |
The chart above shows how many watts correspond to kilocalories values from 775 to 825. You can find the nearest kilocalorie value and see its equivalent power output in watts without needing to calculate manually.
Related Conversion Questions
- How many watts equal 800 kilocalories per hour?
- What is the formula to change 800 kcal/hr into watts?
- Is 800 kilocalories per hour more or less than 900 watts?
- How do I convert 800 kcal to watts using a calculator?
- What does 800 kilocalories per hour mean in terms of power output watts?
- Can I convert 800 kcal/hr to watts for electrical energy comparison?
- Why does 800 kilocalories equal about 928 watts?
Conversion Definitions
Kilocalories: Kilocalories (kcal) is a unit of energy measuring the amount of heat needed to raise the temperature of one kilogram of water by one degree Celsius. It is commonly used to quantify energy content in foods and biological energy expenditure.
Watts: Watts (W) measure power, the rate at which energy is transferred or converted per second. One watt equals one joule per second. Watts are used across electrical, mechanical, and thermal systems to describe energy flow rate.
Conversion FAQs
Can I convert kilocalories to watts directly without time consideration?
No, kilocalories measure energy, while watts measure power, which is energy per unit time. You need to know the time period (usually per hour) to convert kilocalories to watts properly, dividing the energy by the time in seconds.
Why is the factor 1.163 used in converting kcal/hr to watts?
The factor comes from dividing the energy conversion (1 kcal = 4184 joules) by the number of seconds in an hour (3600). So, 4184 ÷ 3600 ≈ 1.163, making it the multiplier for converting kcal/hr to W.
Does the conversion change if I use calories instead of kilocalories?
Yes, calories are 1/1000th of a kilocalorie. If you start with calories per hour, you must multiply by 4.184 instead of 4184 joules, resulting in a much smaller watt value for the same numeric input.
Are the watts calculated here mechanical or electrical power?
The watts represent power in general, regardless of source. The conversion translates thermal energy rate (from kcal/hr) into an equivalent power unit (J/s), which can be applied mechanically, electrically, or thermally as needed.
What happens if I convert kilocalories per minute to watts?
You must adjust the time unit accordingly. Since watts are joules per second, multiplying kcal/min by 4184 then dividing by 60 seconds gives the power in watts. Using the hourly conversion factor without adjustment will give incorrect results.