diff --git a/includes/abstracts/class-wc-background-process.php b/includes/abstracts/class-wc-background-process.php
index 0de4abe6ba7..6d9662208fc 100644
--- a/includes/abstracts/class-wc-background-process.php
+++ b/includes/abstracts/class-wc-background-process.php
@@ -146,10 +146,10 @@ abstract class WC_Background_Process extends WP_Background_Process {
 
 		if ( ! $memory_limit || -1 === intval( $memory_limit ) ) {
 			// Unlimited, set to 32GB.
-			$memory_limit = '32000M';
+			$memory_limit = '32G';
 		}
 
-		return intval( $memory_limit ) * 1024 * 1024;
+		return wp_convert_hr_to_bytes( $memory_limit );
 	}
 
 	/**