How do I build an HTML solution in Solidity

How do I build an HTML solution in Solidity

There is a code for a simple conversion (Farenheit to Celcius) in HTML. I am working to recreate the same thing in Solidity. I would need some pointers in making it work. The solidity Code is as follows: 

There is a code for a simple conversion (Farenheit to Celcius) in HTML. I am working to recreate the same thing in Solidity. I would need some pointers in making it work. The solidity Code is as follows: 


contract TemperatureSolution{
    uint16 input,

function convertTemp(uint16 _input) public{
    return (document.getElementById("outputCelcius").innerHTML=(valNum-32)/1.8)
}
convertTemp(_input);

}

For reference, the HTML that it is based upon is as follows (this works, but I intend to create it on a blockchain):

<html>
<body> <p>Type a value in the Fahrenheit field to convert the value to Celsius:</p> <p> <label>Fahrenheit</label> <input id="inputFahrenheit" type="number" placeholder="Fahrenheit" oninput="temperatureConverter(this.value)" onchange="temperatureConverter(this.value)"> </p> <p>Celcius: <span id="outputCelcius"></span></p>

&lt;script&gt;
function temperatureConverter(valNum) {

valNum = parseFloat(valNum); document.getElementById("outputCelcius").innerHTML=(valNum-32)/1.8; } </script> </body>


javascript html5 solidity blockchain

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