How to Add Custom Fields to WooCommerce Products (Step-by-Step Guide)

Table of Contents

• What Are Custom Fields in WooCommerce?
• Why Use Custom Fields in WooCommerce?
• Methods to Add Custom Fields
  • Using a Plugin (ACF)
  • Using Code in functions.php
• Display Custom Fields on the Product Page
• Conclusion
• FAQs

If you’re running a WooCommerce store, you may want to add extra product details like manufacturer, warranty info, or custom messages. This is where custom fields come in.

Let’s learn how to add them step-by-step.

What Are Custom Fields in WooCommerce?

Custom fields are extra pieces of data you can add to your products. These fields are not shown by default in WooCommerce. You can use them to show more product information to customers.

Why Use Custom Fields in WooCommerce?

Here are some benefits of using custom fields:

• Display extra product specifications (e.g., materials, dimensions)
• Add notes or special instructions
• Provide technical information
• Make product pages more informative and helpful

Methods to Add Custom Fields

You can add custom fields in two main ways: using a plugin or adding code manually.

Using a Plugin (ACF – Advanced Custom Fields)

• Install and activate the Advanced Custom Fields plugin.
• Go to Custom Fields > Add New.
• Create a field group and add the fields you want.
• Set display rules to show the fields on WooCommerce products.
• Now, when you edit a product, you’ll see the new custom fields.

Using Code in functions.php

This method is for users who are comfortable editing code.

Add Field to Product Editor:

add_action('woocommerce_product_options_general_product_data', 'add_custom_field_to_products');
function add_custom_field_to_products() {
    woocommerce_wp_text_input([
        'id' => '_custom_text_field',
        'label' => __('Custom Field', 'woocommerce'),
        'desc_tip' => true,
        'description' => __('Enter custom text for this product.', 'woocommerce'),
    ]);
}

Save Custom Field:

add_action('woocommerce_process_product_meta', 'save_custom_field');
function save_custom_field($post_id) {
    $custom_field = $_POST['_custom_text_field'] ?? '';
    if (!empty($custom_field)) {
        update_post_meta($post_id, '_custom_text_field', sanitize_text_field($custom_field));
    }
}

Display Custom Fields on the Product Page

To display the custom field on the single product page, add this code:

add_action('woocommerce_single_product_summary', 'display_custom_field', 25);
function display_custom_field() {
    global $post;
    $custom_field = get_post_meta($post->ID, '_custom_text_field', true);
    if (!empty($custom_field)) {
        echo '<p class="custom-field">Custom Info: ' . esc_html($custom_field) . '</p>';
    }
}

This will show your custom field just below the product summary.

Conclusion

Adding custom fields is a great way to enhance product information on your WooCommerce store. You can use a plugin like ACF for a no-code solution or add PHP code for full control. Either way, custom fields help provide a better shopping experience.

FAQs