You could download the plugin Reading Time WP. Or you could just add the following code.
Add this code to functions.php:
function reading_time() { $content = get_post_field( 'post_content', $post->ID ); $word_count = str_word_count( strip_tags( $content ) ); $readingtime = ceil($word_count / 200); if ($readingtime == 1) { $timer = " minute"; } else { $timer = " minutes"; } $totalreadingtime = $readingtime . $timer; return $totalreadingtime; }
Place this in the code of your page:
<?php echo reading_time(); ?>
That’s it.