Skip to main content
    UnitConvertLab
    UnitConvertLAB
    Power Conversion

    1 Watt to Calorie/Hour

    Quick answer

    1 Watt (W) equals

    860.42065 cal/h

    To convert 1 Watts to Calorie/Hours, multiply by 860.4206502601. Therefore, 1 Watt (W) equals 860.42065 Calorie/Hour (cal/h).

    Formula: cal/h = W × 860.4206502601. Calculation: 1 × 860.4206502601 = 860.42065 cal/h.

    Convert Watt (W) to Calorie/Hour (cal/h) online with our free unit converter. In power, 1 W = 860.42065 cal/h. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.

    Worked example: converting Watt to Calorie/Hour

    1. Step 1 — start with the formula. cal/h = W × 860.4206502601
    2. Step 2 — substitute your figure. 1 W × 860.4206502601
    3. Step 3 — read the result. 1 W = 860.42065 cal/h
    4. Step 4 — check it in reverse. W = cal/h × 0.0011622222 returns 1 W, which matches the figure you started with.

    Power Converter

    22 units available

    Decimals:
    860.42065

    1 W = 860.42065 cal/h

    Formula:

    cal/h = W × 860.4206502601

    With your value: 1 W = 860.42065026 cal/h

    How big is that?

    Everyday references on a logarithmic scale, all expressed in watt so you can sanity-check the result.

    Your value1.00 W
    LED bulb (9.0× your value)9.00 W
    Laptop (65× your value)65.0 W
    Microwave oven (1.0e+3× your value)1.00e+3 W
    Electric kettle (3.0e+3× your value)3.00e+3 W
    Family car engine (9.0e+4× your value)9.00e+4 W

    Other Watt to Calorie/Hour conversions

    2 W to cal/h3 W to cal/h4 W to cal/h5 W to cal/h6 W to cal/h7 W to cal/h8 W to cal/hFull Watt to Calorie/Hour converter

    Watt to Calorie/Hour Conversion Table

    Watt (W)Calorie/Hour (cal/h)
    0.5430.210325
    1860.42065
    21,720.841301
    54,302.103251
    108,604.206503
    1512,906.309754
    2017,208.413005
    2521,510.516257
    5043,021.032513
    10086,042.065026
    250215,105.162565
    500430,210.32513
    1000860,420.65026

    Calorie/Hour to Watt Conversion Table

    Calorie/Hour (cal/h)Watt (W)
    0.50.000581
    10.001162
    20.002324
    50.005811
    100.011622
    150.017433
    200.023244
    250.029056
    500.058111
    1000.116222
    2500.290556
    5000.581111
    10001.162222

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Watt (W)

    Power

    Exact conversion

    Derived from the watt (1 W = 1 J/s).

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    Calorie/Hour (cal/h)

    Power

    Exact conversion

    Derived from the watt (1 W = 1 J/s).

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    How to Convert Watt to Calorie/Hour

    To convert from Watt (W) to Calorie/Hour (cal/h), multiply the value by 860.4206502601.

    Formula: cal/h = W × 860.4206502601

    Reverse: W = cal/h × 0.0011622222

    Step-by-Step Example

    1. Start with your value in Watt. For example: 5 W
    2. Multiply by the conversion factor: 5 x 860.4206502601
    3. The result is: 4,302.103251 cal/h

    Watt and Calorie/Hour Relationship

    This calculation facilitates standardized conversion between recognized units of power. Since 1 Watt equals approximately 860.4207 Calorie/Hours, the Watt represents a larger unit interval than the Calorie/Hour. Understanding the relationship between Watt and Calorie/Hour is essential for accurate calculations in physics, engineering, commerce, and daily applications.

    About Watt

    The Watt (symbol: W) is a recognized unit in the Metric (SI) measurement framework, utilized within power applications for precision and standardized data representation.

    Common uses of Watt: power calculations, engineering and science, education.

    About Calorie/Hour

    The Calorie/Hour (symbol: cal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.

    Common uses of Calorie/Hour: power calculations, engineering and science, education.

    Frequently Asked Questions

    What is 1 Watt in Calorie/Hour?
    1 Watt equals 860.42065 Calorie/Hour.
    How many Calorie/Hours are in 1 Watt?
    There are exactly 860.4206502601 Calorie/Hours in 1 Watt. This means the conversion factor from Watt to Calorie/Hour is 860.4206502601.
    What is the formula to convert Watt to Calorie/Hour?
    The formula to convert Watt to Calorie/Hour is: cal/h = W × 860.4206502601. For example, to convert 10 Watts to Calorie/Hours, you would multiply 10 by 860.4206502601.
    What is a Watt?
    The Watt (symbol: W) is a recognized unit in the Metric (SI) measurement framework, utilized within power applications for precision and standardized data representation.
    What is a Calorie/Hour?
    The Calorie/Hour (symbol: cal/h) is a recognized unit in the Standard measurement framework, utilized within power applications for precision and standardized data representation.
    What are the common uses of Watt?
    The Watt is commonly used in power calculations, engineering and science, education.

    Related Power Conversions

    Watt → KilowattWatt → MegawattWatt → GigawattWatt → MilliwattWatt → MicrowattWatt → Horsepower (Mech)Watt → Horsepower (Metric)Watt → Horsepower (Elec)Watt → Horsepower (Boiler)

    Cite this page

    UnitConvertLab. (2026). 1 Watt to Calorie/Hour. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/1-watt-to-calorie_per_hour