diff --git a/plugins/woocommerce/changelog/do-not-assume-megabytes b/plugins/woocommerce/changelog/do-not-assume-megabytes
new file mode 100644
index 00000000000..f3c847a5c13
--- /dev/null
+++ b/plugins/woocommerce/changelog/do-not-assume-megabytes
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Fix bug parsing memory_limit in product importer
diff --git a/plugins/woocommerce/includes/import/abstract-wc-product-importer.php b/plugins/woocommerce/includes/import/abstract-wc-product-importer.php
index f2fc33bc29f..44c8db04c9e 100644
--- a/plugins/woocommerce/includes/import/abstract-wc-product-importer.php
+++ b/plugins/woocommerce/includes/import/abstract-wc-product-importer.php
@@ -747,7 +747,7 @@ abstract class WC_Product_Importer implements WC_Importer_Interface {
 			// Unlimited, set to 32GB.
 			$memory_limit = '32000M';
 		}
-		return intval( $memory_limit ) * 1024 * 1024;
+		return wp_convert_hr_to_bytes( $memory_limit );
 	}
 
 	/**