Search the email account you used to sign up. Planet Fitness sent you your membership contract by email. Try searching "Your Club Agreement" or "Planet Fitness". Once you have found your agreement, your membership number will be at the top.
You can alsolog into your Planet Fitness account to retrieve your Membership ID
*Note: We are not affiliated with Planet Fitness or PFIP, LLC. Our cancellation service follows their policies to cancel your membership for you.