WooCommerce: Stock Quantity Suffix e.g. “sq. in.”, “Kg”, “boxes”, etc.

Each WooCommerce business is different, which means customization is required to adapt the store to unique specifications.

A clear example is the stock quantity. Not all stores can display the standard notice “11 in stock”. The display could change to “11 Kg in stock” if stock is based on weight. Or maybe “11 boxes in stock” or “11 pairs in stock” in case the package description is useful UX-wise. Also, “11 m³ in stock” if the business sells volumes.

Either way, this is a nice trick to display a “stock quantity suffix” in your WooCommerce Single Product Page. Enjoy!

PHP Snippet: Stock Quantity Suffix @ WooCommerce Single Product Page

/**
 * @snippet       Stock Quantity Suffix @ WooCommerce Single Product
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 5
 * @community     https://businessbloomer.com/club/
 */

add_filter( 'woocommerce_format_stock_quantity', 'bbloomer_stock_quantity_suffix', 9999, 2 );

function bbloomer_stock_quantity_suffix( $stock_quantity, $product ) {
    $stock_quantity .= ' m<sup>2</sup>'; // CONCATENATE " m2"
    return $stock_quantity;
}

Where to add custom code?

You should place custom PHP in functions.php and custom CSS in style.css of your child theme: where to place WooCommerce customization?

This code still works, unless you report otherwise. To exclude conflicts, temporarily switch to the Storefront theme, disable all plugins except WooCommerce, and test the snippet again: WooCommerce troubleshooting 101

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Rodolfo Melogli

Business Bloomer Founder

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza. Follow @rmelogli