Custom Size Charts for WooCommerce allows you to assign ready-to-use default size chart templates to the product or Create Custom Size Chart for any of your WooCommerce products. You can also clone existing size chart templates and create your own size charts and assign them to a category or specific products.
You can edit any of the size charts available in the plugin, preview or clone them.
For each size chart, you can add label, chart image, categories for which you want the chart to appear, chart position (modal popup/additional tab on product page) and table style.
For each size chart, you can create your custom chart table (with as many rows and columns you would like to include).
Plugin settings offers the option to change the label of size chart tab and modal popup, which is displayed in product page.Source