What one point of churn is actually costing you
Put in five real numbers and get your monthly churn, average member lifetime, LTV and LTV:CAC — plus the figure that actually drives decisions: what a single percentage point of churn is worth to you over a year. No benchmarks, no email gate. Every output is computed from your own inputs.
Your numbers
4.5% monthly churn
An average member stays 22.2 months.
Cutting monthly churn by one percentage point is worth about $5,333 a year to you. That is the number worth putting against any retention fix.
- Lifetime value per member
- $1,382
- LTV to CAC ratio
- 11.5:1
- Revenue lost to churn, next 12 months
- $12,960
- Spend to replace them at your CAC
- $25,920
For scale: an AI receptionist at $1,499 pays for itself in 3.4 months if it recovers a single point of churn.
What this does not model
- Seasonality — January joiners and September joiners churn differently
- Contract length, freezes and minimum terms
- The split between voluntary cancellations and failed payments
- Any benchmark for what “good” looks like in your segment
Where the leak usually is
Four levers, in rough order of leverage
Retention is a leaky bucket with a small number of identifiable holes, most of them operational rather than programmatic.
The first 30 days
The highest-leverage window in the entire membership, and the one most gyms treat with the least deliberate effort. A real human follow-up inside 48 hours and a second visit booked before the first one ends does more than any app feature.
The staff relationship
Members do not cancel gyms, they cancel a relationship with one. Whether a member knows a staff member's name by week two is a better predictor than almost anything on your feature list.
Involuntary churn
Failed cards that silently lapse a membership nobody decided to cancel. Automatic retries and card-updater support recover members who never intended to leave — the cheapest retention win available.
Missed-visit follow-up
A message after roughly two weeks of no check-in, referencing something specific, beats a monthly newsletter by a wide margin because it responds to a real signal rather than a calendar.
Methodology
The arithmetic, stated plainly
Monthly churn is cancellations divided by starting members. Average member lifetime in months is the reciprocal of that rate. Lifetime value is the monthly fee multiplied by that lifetime, plus any joining fee. LTV:CAC divides the result by what you told us a member costs to acquire.
The value of one percentage point is the part worth arguing with: it takes 1% of your member base, and values each of those members at their full remaining lifetime rather than at a single month. That is the honest way to size a retention improvement, because a member you keep does not pay you once.
There are deliberately no benchmarks anywhere on this page. Published gym retention averages differ so much between a boutique studio, a 24/7 access gym and a CrossFit box that quoting one as though it applied to everyone would be worse than quoting none. What is useful is your own number, tracked monthly, ideally by join-date cohort — which usually needs a dashboard from $799 on top of your platform, because built-in reports rarely slice that way.
The unprofitable advice: before you buy any software to fix retention, check what share of your cancellations were failed payments rather than decisions. If it is a large share, the fix is your billing configuration, costs nothing, and no vendor will tell you that because there is no product attached to it.
Retention questions
What operators ask about churn
How do you calculate gym member retention rate?
Monthly churn is cancellations in a month divided by the members you started that month with. Retention is the inverse. Average member lifetime in months is the reciprocal of the monthly churn rate — so 4% monthly churn means an average stay of 25 months. This calculator does all three from your own numbers, which is the only honest way to do it: published benchmarks vary so widely between a boutique studio, a 24/7 access gym and a CrossFit box that a single industry average is close to meaningless for any specific club.
What is a good gym retention rate?
There is no single number worth quoting, and anyone who gives you one without asking what kind of gym you run is guessing. What matters more than an industry average is your own trend: track the same calculation monthly, and by join-date cohort if your platform can, so you can tell whether something you changed actually moved it. A rate that is improving month over month beats a rate that merely looks respectable against someone else's benchmark.
Why does one percentage point of churn matter so much?
Because it compounds against your whole base, every month, forever. A point of churn on 400 members is four people a month who would each have kept paying for their remaining average lifetime. The calculator turns that into an annual figure precisely so it can be compared against the cost of fixing it — most retention fixes are three or four figures, and the leak they close is frequently five.
Should I count failed payments as churn?
Yes, and separately if you can. A meaningful share of member losses are involuntary — a card expires, a payment fails, the membership lapses without anyone deciding anything. It is the cheapest churn to fix, because those members did not choose to leave: automatic retry schedules, card-updater support and a front-desk queue for the stragglers recover a good portion of them without touching programming or facilities.
What is a healthy LTV to CAC ratio for a gym?
As a rough sanity check rather than a rule, a business that spends more to acquire a member than that member is worth is in trouble, and one at parity has no margin to invest in growth. Beyond that, what the ratio is really useful for is direction: if it is falling, either acquisition is getting more expensive or members are leaving sooner, and those two problems have completely different fixes.
Next steps
Turn the number into a fix
Let’s create together
Send us your churn number and we'll tell you where it's leaking
Paste in what this calculator gave you plus what your platform does about failed payments. We'll come back with the cheapest thing that would move it — usually within one business day.