woocommerce/docs/code-snippets/adjust-quantity-input-value...

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---
post_title: Adjust the quantity input values
tags: code-snippet
---
Set the starting value, maximum value, minimum value, and increment amount for quantity input fields on product pages.
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 [Code snippets](https://wordpress.org/plugins/code-snippets/) plugin. Avoid adding custom code directly to your parent theme's `functions.php` file, as this will be wiped entirely when you update the theme.
```php
if ( ! function_exists( 'YOUR_PREFIX_woocommerce_quantity_input_args' ) ) {
/**
* Adjust the quantity input values for simple products
*/
function YOUR_PREFIX_woocommerce_quantity_input_args( $args, $product ) {
// Only affect the starting value on product pages, not the cart
if ( is_singular( 'product' ) ) {
$args['input_value'] = 4;
}
$args['max_value'] = 10; // Maximum value
$args['min_value'] = 2; // Minimum value
$args['step'] = 2; // Quantity steps
return $args;
}
add_filter( 'woocommerce_quantity_input_args', 'YOUR_PREFIX_woocommerce_quantity_input_args', 10, 2 );
}
if ( ! function_exists( 'YOUR_PREFIX_woocommerce_available_variation' ) ) {
/**
* Adjust the quantity input values for variations
*/
function YOUR_PREFIX_woocommerce_available_variation( $args ) {
$args['max_qty'] = 20; // Maximum value (variations)
$args['min_qty'] = 2; // Minimum value (variations)
// Note: the starting value and step for variations is controlled
// from the 'woocommerce_quantity_input_args' filter shown above for
// simple products
return $args;
}
add_filter( 'woocommerce_available_variation', 'YOUR_PREFIX_woocommerce_available_variation' );
}
```
If you are looking for a little more power, check out our [Min/Max Quantities](https://woocommerce.com/products/minmax-quantities) extension!