Exhibit 23.1

KPMG LLP

Two Financial Center

60 South Street

Boston, MA 02111

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Planet Fitness, Inc.:

We consent to the use of our report dated March 4, 2016, with respect to the consolidated balance sheets of Planet Fitness, Inc. and subsidiaries as of December 31, 2015 and 2014, and the related consolidated statements of operations, comprehensive income, cash flows, and changes in equity for each of the years in the three-year period ended December 31, 2015, incorporated herein by reference and to the reference to our firm under the heading “Experts” in the prospectus.

/s/ KPMG LLP

Boston, Massachusetts

December 22, 2016

KPMG LLP is a Delaware limited liability partnership and the U.S. member

firm of the KPMG network of independent member firms affiliated with

KPMG International Cooperative (“KPMG International”), a Swiss entity.