Gym KPIs Every Owner Should Track (With Formulas and a Worked Example)

Active members

Define “active” once and stick to it. A sensible definition is anyone with a current paid membership, including frozen members counted separately. Gym software vendors define it differently: Gymdesk’s pricing, for example, doesn’t count visitors, frozen or cancelled members, or prospects as active members, while Zen Planner counts people with a membership or who attended an event in the past month. When you compare your numbers with any benchmark, check the definition first.

Monthly churn rate

Churn rate is cancellations during the month divided by active members at the start of the month. Northside: 18 ÷ 300 = 6.0%.

Monthly churn compounds. If 6% left every month and nobody joined, the gym would keep about 94% each month, which is 0.94 to the power of 12, or about 48%, after a year. That is worked arithmetic, not a forecast, but it shows why a 1-point change in monthly churn matters so much.

Net member growth

New members minus cancellations. Northside: 24 − 18 = +6. A gym can have strong sales and still shrink if cancellations keep pace, so always read joins and cancellations together.

Average membership length

The simplest estimate is 1 ÷ monthly churn rate. At 6% monthly churn, the average member stays about 1 ÷ 0.06 ≈ 16.7 months. It is a rough figure that assumes churn is steady; for a better one, measure how long members who cancelled in the last year actually stayed.

Visits per member

Total check-ins divided by active members, for a week or a month. Northside: 2,760 ÷ 303 (the average of 300 and 306) ≈ 9.1 visits per member in October, or roughly 2 a week. Watch the trend more than the level, and split it by membership type: an unlimited member at 4 visits a month is a very different signal from a 4-class-pack member at 4.

There is long-standing evidence that members overestimate how often they will go. In a study of 7,752 members at three US health clubs, published in the American Economic Review in 2006, DellaVigna and Malmendier found members on monthly contracts of over $70 attended about 4.3 times a month, paying more than $17 per visit when a 10-visit pass cost $10 per visit. Members who come rarely are the ones most likely to notice that maths eventually.

At-risk members

Count members with no check-in for 14 days, and separately for 21 or more days. This list is the most useful report a front desk can have, because it names the people to call this week. The Health & Fitness Association’s 2026 US consumer report found the share of members who never used their membership fell to 4.6% in 2025, an all-time low, so a large group of non-attenders at your gym is worth investigating.

Class fill rate and no-show rate

For class-based gyms, fill rate is attendees divided by capacity, and no-show rate is no-shows divided by bookings. A class at 95% booked but 70% attended has a cancellation-rule problem, not a demand problem. Review both by class slot; a schedule-wide average hides the 6 a.m. class that is always full and the 2 p.m. class that never is.

Average revenue per member

Membership revenue divided by average active members. Track it alongside the mix of membership types. If ARPM falls while members rise, the gym may be filling up with discounted plans.

Member lifetime value

ARPM multiplied by average months retained. At Northside, a member is worth about $1,885 in membership revenue over their time at the gym. This number caps what it makes sense to spend acquiring a member, and it shows the value of retention: if churn fell from 6% to 5%, average length would rise to 20 months and lifetime value to about $2,257, roughly $372 more per member, with no change in price.

Secondary revenue per member

Personal training, retail, drinks and workshops add up. Divide that revenue by active members to see how much each member spends beyond dues. It is often where a gym with flat membership revenue still grows.

The three conversion rates

Lead to trial: trials booked divided by leads. Northside: 40 ÷ 80 = 50%. Trial to member: members from trials divided by trials. If all 24 new members came through trials, that is 24 ÷ 40 = 60%. Overall lead to member: 24 ÷ 80 = 30%.

Each rate points to a different fix. Low lead-to-trial usually means slow follow-up or a confusing booking step. Low trial-to-member usually means the trial experience itself: whether a coach greeted them, whether anyone asked them to join at the end.

Cost per acquisition

Marketing spend divided by new members. If Northside spent $1,800 on ads in October and won 24 members, cost per acquisition was $75. Compared with a lifetime value of about $1,885, that is affordable. Compare cost per acquisition to lifetime value, not to the first month’s fee.

Lead response time

Measure the time from a lead arriving to the first reply from a person. It isn’t a financial number, but it is one owners can change the same day.

Failed payment rate and recovery rate

Failed payment rate is the value of failed charges divided by the value attempted. Recovery rate is the value later collected divided by the value that failed. Northside recovered $1,100 of $1,600, a recovery rate of about 69%, and lost $500 that month.

What your processor does for you

Check your payment settings before chasing members by hand. Stripe, for example, documents Smart Retries, enabled by default for new accounts and set to up to 8 retries within 2 weeks, and notes that some hard declines such as a lost or stolen card can’t be retried without a new payment method. Stripe also lists card account updater as included on standard pricing. Whatever your processor, find out what happens after the last retry: whether the membership is cancelled, paused or left past due.

Payment costs per member

At Stripe’s published US rates of 2.9% plus 30¢ for online cards and 0.8% capped at $5 for ACH Direct Debit, a $110 monthly membership costs about $3.49 by card and 88¢ by bank debit. Over 300 members that gap is about $783 a month, which is why some gyms offer a small discount for bank payment. The figures are worked from the published rates; your gym software’s processing rates may differ.

What is a good churn rate for a gym?

It depends heavily on the type of gym and how “active member” is defined, so compare your own trend over time rather than chasing a published average. Any sustained improvement matters: at the example gym, cutting monthly churn from 6% to 5% raises member lifetime value by about $372.

How do I calculate member lifetime value?

Multiply average monthly revenue per member by the average number of months a member stays. A simple estimate of months stayed is 1 divided by the monthly churn rate. At $112.87 a month and 6% churn, lifetime value is about $1,885.

Which gym KPI should I look at first?

Visits per member and the list of members who haven’t checked in for two to three weeks. They change before cancellations do and point to specific people the team can contact this week.

What counts as an active member?

Anyone with a current paid membership is the usual definition, with frozen members tracked separately. Software vendors use different definitions for their own pricing, so check yours before comparing numbers.

How often should I review gym KPIs?

Attendance and leads weekly, membership and revenue monthly, and lifetime value and acquisition cost quarterly. The schedule matters less than reviewing on the same day every time and acting on what changed.

What is involuntary churn?

Members lost because a payment failed rather than because they chose to leave. Measure failed and recovered payments monthly, and check your processor’s retry settings and what happens to the membership after the final retry.