How to Display ACF File upload size

If you want to display size of file uploaded through ACF (Advanced Custom Fields) File field in your website, you can use the below code.

<?php $attachment_id = get_field('download');
$url = wp_get_attachment_url( $attachment_id );
$title = get_the_title( $attachment_id );

// part where to get the filesize
$filesize = filesize( get_attached_file( $attachment_id ) );
$filesize = size_format($filesize, 2);

// show custom field
if (get_field('download')): ?>
<a href=”<?php echo $url; ?>” ><?php echo $title; ?></a>

<!– show filesize –>
<?php echo $filesize; ?>
<?php endif; ?>