WooCommerce: Edit Add to Cart Min, Max & Step Quantity

Yes, there are many plugins that already achieve this. But my goal at Business Bloomer is to save you from plugin conflicts, delicate updates and to make you learn some PHP 🙂

So, here’s how you can add, with a few lines of PHP, a minimum, maximum, increment and starting value to your Add to Cart quantities on the single product and cart pages. Who knew it was this easy?

PHP Snippet 1: Set Min, Max, Increment & Start Value Add to Cart Quantity @ WooCommerce Single Product Page & Cart Page (Simple Products)

/**
 * @snippet       Min, Max, Increment & Start Value Add to Cart Quantity | WooCommerce
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @testedwith    WooCommerce 3.8
 * @donate $9     https://businessbloomer.com/bloomer-armada/
 */
 
add_filter( 'woocommerce_quantity_input_args', 'bloomer_woocommerce_quantity_changes', 10, 2 );
  
function bloomer_woocommerce_quantity_changes( $args, $product ) {
  
   if ( ! is_cart() ) {
 
      $args['input_value'] = 4; // Start from this value (default = 1) 
      $args['max_value'] = 10; // Max quantity (default = -1)
      $args['min_value'] = 4; // Min quantity (default = 0)
      $args['step'] = 2; // Increment/decrement by this value (default = 1)
 
   } else {
 
      // Cart's "min_value" is already 0 and we don't need "input_value"
      $args['max_value'] = 10; // Max quantity (default = -1)
      $args['step'] = 2; // Increment/decrement by this value (default = 0)
      // COMMENT OUT FOLLOWING IF STEP < MIN_VALUE
      // $args['min_value'] = 4; // Min quantity (default = 0)
 
   }
  
   return $args;
  
}

PHP Snippet 2: Set Min Add to Cart Quantity @ WooCommerce Single Product Page (Variable Products -> Single Variation)

/**
 * @snippet       Min Add to Cart Quantity for Variations | WooCommerce
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @testedwith    WooCommerce 3.8
 * @donate $9     https://businessbloomer.com/bloomer-armada/
 */
 
add_filter( 'woocommerce_available_variation', 'bloomer_woocommerce_quantity_min_variation', 9999, 3 );

function bloomer_woocommerce_quantity_min_variation( $args, $product, $variation ) {
	$args['min_qty'] = 5;
	return $args;
}