Display WooCommerce product dimensions on archive pages, below the title of the product.

Add this code to your child theme’s functions.php file or via a plugin that allows custom functions to be added, such as the Dessky Snippets plugin. Please don’t add custom code directly to your parent theme’s functions.php file as this will be overwritten completely when you update the theme.

WooCommerce version 3.0+

/**
 * Show product dimensions on archive pages for WC 3+
 */
add_action( 'woocommerce_after_shop_loop_item', 'rs_show_dimensions', 9 );

function rs_show_dimensions() {
    global $product;
    $dimensions = wc_format_dimensions($product->get_dimensions(false));

        if ( $product->has_dimensions() ) {
                echo '<div class="product-meta"><span class="product-meta-label">Dimensions: </span>' . $dimensions . '</div>';
        }
}

WooCommerce version lower than 3.0

/**
 * Show product dimensions on archive pages WC 3 and below
 */
add_action( 'woocommerce_after_shop_loop_item_title', 'wc_show_dimensions', 9 );

function wc_show_dimensions() {
	global $product;
	$dimensions = $product->get_dimensions();

        if ( ! empty( $dimensions ) ) {
                echo '<span class="dimensions">' . $dimensions . '</span>';
        }
}