How to find the size of localStorage in HTML?

localStorage is used to persist information across multiple sessions. It has a maximum size of 5MB.

Example

You can try to run the following code snippet to check the size allocated −

var sum = 0; // loop for size for(var i in localStorage) {    var amount = (localStorage[i].length * 2) / 1024 / 1024;    sum += amount;    document.write( i + " = " + amount.toFixed(2) + " MB"); } document.write( "Total = " + sum.toFixed(2) + " MB");