How to get child product id's from parent product id in magento2 for configurable product?

I want to get child product id of parent product in magento based on parent product id.

  • Please check my answer and let me know. Sep 13, 2018 at 8:57

2 Answers 2


Try the below solution:

    $productId = 5; //Configurable product ID
    $_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $_product = $_objectManager->create('Magento\Catalog\Model\Product')->load($productId);
    $_childProducts = $_product->getTypeInstance()->getUsedProducts($_product);
    foreach ($_childProducts as $simpleProduct){
        echo $simpleProduct->getId();

Suggestion: Don't use object manager directly in your code as its not a best practice. You need to inject the product model class to your respective class then use it.

  • yes i have injected model and working fine. Thanks @sukumar Sep 13, 2018 at 11:01
  • Welcome. Happy Coding :) Sep 13, 2018 at 11:03

Try to use this code :

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$configProduct = $objectManager->create('Magento\Catalog\Model\Product')->load($product_id);

$_children = $configProduct->getTypeInstance()->getUsedProducts($configProduct);

foreach ($_children as $child){
    echo $child->getID();

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