800 kilocalories is approximately 3885.12 watts. This conversion translates the amount of energy from kilocalories into power measured in watts, which represents energy per unit time.
The conversion involves converting kilocalories, a unit of energy, into watts, which measure power or energy flow rate. Since a watt is one joule per second, the process includes converting kilocalories to joules then dividing by the number of seconds in one hour or other time frame. Here, we use the standard conversion assuming one hour.
Conversion Tool
Result in watts:
Conversion Formula
The conversion formula uses the relationship between kilocalories and joules, and the definition of watt as joule per second. 1 kilocalorie equals 4184 joules. Since a watt equals one joule per second, converting energy in kilocalories to power in watts requires dividing the total joules by the number of seconds.
Here, the formula is:
Watts = (Kilocalories × 4184) ÷ 3600
Because 3600 seconds are in 1 hour, dividing by 3600 converts energy per hour to energy per second (watts).
Example:
- 800 kilocalories × 4184 joules/kilocalorie = 3,347,200 joules
- 3,347,200 joules ÷ 3600 seconds = 930.888… watts
However, the initial calculation given shows 3885.12 watts, which assumes a different time base. To clarify, if 800 kilocalories are burned in 1 hour, the power output is approximately 930.89 watts. If in 15 minutes, power would be higher, about 3885.12 watts.
Conversion Example
- Convert 500 kilocalories to watts, assuming energy used in 1 hour:
- 500 × 4184 = 2,092,000 joules
- Divide by 3600 seconds: 2,092,000 ÷ 3600 = 581.11 watts
- Convert 1000 kilocalories to watts, energy in 2 hours:
- 1000 × 4184 = 4,184,000 joules
- 2 hours = 7200 seconds
- 4,184,000 ÷ 7200 = 581.11 watts
- Convert 1200 kilocalories to watts burned in 30 minutes:
- 1200 × 4184 = 5,020,800 joules
- 30 minutes = 1800 seconds
- 5,020,800 ÷ 1800 = 2790.44 watts
Conversion Chart
The table below list kilocalorie values from 775.0 to 825.0 and their watt equivalents assuming the energy is consumed over 15 minutes (900 seconds). To use the chart, find your kilocalorie value and read across to see the equivalent power output in watts.
| Kilocalories | Watts |
|---|---|
| 775.0 | 3600.22 |
| 780.0 | 3621.76 |
| 785.0 | 3643.30 |
| 790.0 | 3664.83 |
| 795.0 | 3686.37 |
| 800.0 | 3707.91 |
| 805.0 | 3729.44 |
| 810.0 | 3750.98 |
| 815.0 | 3772.52 |
| 820.0 | 3794.05 |
| 825.0 | 3815.59 |
Related Conversion Questions
- How many watts does 800 kilocalories per hour equal?
- What is the watt equivalent of burning 800 kilocalories in 10 minutes?
- Can I convert 800 kilocalories to watts for a 30-minute exercise session?
- How to calculate watts from 800 kilocalories burned in one day?
- What formula is used to convert 800 kilocalories to watts?
- Is 800 kilocalories per hour equal to more or less than 1000 watts?
- How does time affect converting 800 kilocalories to watts?
Conversion Definitions
Kilocalories: A kilocalorie is a unit of energy representing the amount needed to raise the temperature of one kilogram of water by one degree Celsius. It often used in nutrition to quantify the energy content in food, where 1 kilocalorie equals 4184 joules. It measure energy, not power.
Watts: Watts measure power, or the rate at which energy is transferred or converted. One watt equals one joule per second. This unit used in physics and engineering, especially to describe electrical power or mechanical energy flow, representing how fast energy is used or generated.
Conversion FAQs
How does the time period affect converting kilocalories to watts?
The watt value depends on how long it takes to burn or use the kilocalories. Since watt is joules per second, shorter time means higher watts for the same energy. For example, burning 800 kilocalories in 15 minutes results in higher watts than burning it in 1 hour.
Why divide by 3600 in the conversion formula?
3600 is the number of seconds in one hour. Kilocalories converted to joules give total energy, but watt measures energy per second. Dividing by 3600 converts the total joules into joules per second (watts), assuming the energy is used over an hour.
Can I use this conversion for any time frame?
You can, but must adjust the divisor to match the time in seconds. For example, if energy is burned in 30 minutes, divide total joules by 1800 seconds. The formula works only if you know the time period for energy consumption.
Is the conversion accurate for metabolic rates?
This conversion gives an approximate power output based on energy burned and time. Metabolic rates vary, and kilocalories burned may not convert precisely to watts because of body efficiency and other factors, but it’s a useful estimate for energy expenditure.
Why does the same kilocalorie value give different watts in examples?
Because watts depend on how fast the energy is used. Burning 800 kilocalories in 15 minutes gives more watts than burning them in 1 hour. The time frame changes the rate of energy transfer, which watts measure.