I have a table with two-button **Inch** and **CM**, and I want to change the numbers from Inch to CM on click, Please can someone teach me how to do it 

[![enter image description here](https://i.stack.imgur.com/P8eVH.png)](https://i.stack.imgur.com/P8eVH.png)

```js
 data() {
        return {

          guild_size_inch: [
            {
              size: "S",
              chest: "92",
              length: "71"
            },
            {
              size: "M",
              chest: "40",
              length: "29"
            },
            {
              size: "L",
              chest: "44",
              length: "30"
            }
          ],
        }
      },

      methods: {
        changeToCM: function() {
          this.guild_size_inch * 2.54;
          alert(this.guild_size_inch)
        }
      }

```