By default Woocommerce displays 4 related products on your website’s single-product page. Modify the output using the function below.
Paste the code below into your theme’s functions.php file.
// Redefine woocommerce_output_related_products()
function woocommerce_output_related_products() {
woocommerce_related_products(6,3); // Display 6 products in rows of 3
}