f=
a=>[a=(a-199.205)/1.4,a+=273.15,a*=1.8,a-=459.67]

<input oninput=f(this.value).map(function(x,i){o.rows[i].cells[1].textContent=x})>
<table id=o>
<tr><th>Celcius:</th><td></td></tr>
<tr><th>Kelvin:</th><td></td></tr>
<tr><th>Rankine:</th><td></td></tr>
<tr><th>Fahrenheit:</th><td></td></tr>
</table>

f=
a=>[a=(a-199.205)/1.4,a+=273.15,a*=1.8,a-=459.67]

<input oninput=f(this.value).map(function(x,i){o.rows[i].cells[1].textContent=x})>
<table id=o>
<tr><th>Celsius:</th><td></td></tr>
<tr><th>Kelvin:</th><td></td></tr>
<tr><th>Rankine:</th><td></td></tr>
<tr><th>Fahrenheit:</th><td></td></tr>
</table>