Add Min, Max, Increment & Start Value @ Add to Cart Quantity | WooCommerce Single Product Page
add_filter( 'woocommerce_quantity_input_args', 'bloomer_woocommerce_quantity_changes', 10, 2 ); function bloomer_woocommerce_quantity_changes( $args, $product ) { $args['input_value'] = 4; // Start from this value (default = 1) $args['max_value'] = 10; // Max quantity (default = n/a) $args['min_value'] = 2; // Min quantity (default = 1) $args['step'] = 2; // Increment/decrement by this value (default = 1) return $args; }