Use this tool to track number from any webpage and graph how it changes over time.
You can use mathematical expressions to adjust the numbers. For example, say your number collects temperature from a page in fahrenheit but you want to display this in celcius.
(x / 100).toFixed(2)
((x - 32) / (9/5)).toFixed(2)
x) when you go to the details page. Therefore the result will not overwrite the orignal value.