Most studio owners know their fill rate to the decimal. Far fewer know whether the number is good. You pull the report, see 68% average utilisation, and feel a quiet unease. Is that healthy? Should it be 80%? Is the studio down the road doing better? The honest answer is that a single average tells you almost nothing on its own. What matters is the shape underneath it, and once you can read the shape, a lot of anxious guesswork falls away.
The average hides more than it shows
Fill rate, or class occupancy, measures the percentage of available spots that are actually booked and attended. It is one of the most useful operating metrics a studio has, because it sits directly on top of revenue. Every empty spot in a scheduled class is a fixed cost you paid for and did not sell. But the headline average flattens a timetable that is anything but flat.
Consider two studios both running at a 75% average. The first fills every class to roughly three-quarters, morning and midday alike. The second sells out its 6am and 6pm slots and runs its 11am at a quarter full. Same average, completely different businesses. The first has soft demand across the board. The second has strong demand it is failing to capture at peak, and dead capacity off-peak that it should either fill differently or stop scheduling. The number 75 does not distinguish between them. Your job is to.
What the benchmarks actually say
Across industry guidance, a sustainable floor for a healthy boutique studio sits around 70% occupancy, treated as the target for high-touch boutique operations. That floor is not arbitrary. Below it, you are carrying more capacity than demand supports and your margins thin out. Push well above it, sustained, and you start bumping into a different problem entirely.
When occupancy runs consistently above 85%, the standard advice is to add class times or raise prices rather than keep cramming the same slots. This is the part owners chasing a high average tend to miss. A studio that is genuinely full is not a studio to celebrate indefinitely. It is a studio turning members away, and the cost of that shows up later. In one widely cited industry analysis, 19% of members who cancelled cited overcrowding as a reason, and among members who felt their club was overcrowded, 47% blamed the group fitness area specifically. Full to bursting is not a stable equilibrium. It is churn you have not been billed for yet.
Why 70% average with 95% peaks beats a flat 80%
Here is the distinction that reframes the whole metric. A studio averaging 70% with peak classes selling out near 95% is in a stronger position than one holding a flat 80% everywhere.
The flat 80% looks tidier on paper, but a timetable that never spikes is a timetable with no pricing power and no signal. If nothing ever sells out, you have no evidence of unmet demand, no case for premium peak pricing, and no natural pressure pushing members toward the quieter slots you actually need to fill. You are underpricing your best hours precisely because everything looks fine.
The 70% average with hard peaks tells a richer story. The 95% peaks prove there is real, concentrated demand you can monetise. That is where waitlists, dynamic peak pricing, and membership tiers earn their keep. The 70% average simply reflects the mathematical reality that off-peak hours will never match prime time, and that is normal. What you have is a lever. The flat studio has a plateau.
A sold-out 6pm is not a scheduling failure. It is your most reliable evidence of what members will pay a premium for.
This matters more as pricing rises. Boutique class prices climbed roughly 6% in the last year, from an average of $20.10 to $21.32 per class. When each seat is worth more, the gap between a captured peak and a missed one widens. Reading peaks correctly is no longer a nicety.
Peak and off-peak are two different businesses
The practical move is to stop reporting one fill rate and start reporting at least two. Segment your timetable into peak and off-peak and benchmark each against itself. Peak classes should be pushing the top of the band, 85% and up, tipping into waitlists. Off-peak classes live lower by nature, and the goal there is not to match peak but to decide, class by class, whether the slot earns its place.
An off-peak class at 40% is not automatically a failure. If it serves a loyal weekday-morning cohort, retains well, and covers its instructor cost, it is doing a job. Group participation itself is a retention engine. Members who take classes are meaningfully stickier than solo gym users, with one industry study finding that gym-only members had a 56% higher risk of cancelling than group exercisers. A quieter class that keeps members in the habit may be worth more than its fill rate suggests. But if that 40% slot is thin, poorly retained, and staffed at full cost, it belongs on the cut list. The average would never have told you which was which.
What to do with this
Start by splitting the number. Pull fill rate by class and by time band, not as a single studio-wide figure, and hold each against a 70% floor rather than a flat target.
- Protect and price the peaks. Where classes push past 85% and generate waitlists, add a session or introduce peak pricing before you quietly degrade the experience with overcrowding.
- Judge off-peak on contribution, not fill. A low-fill class that retains a committed group and covers its cost stays. A low-fill class that does neither goes.
- Treat sustained highs as a signal, not a trophy. Consistent 90%+ across the board means you are under-supplied or under-priced, and members are already feeling the squeeze.
- Track the trend, not the snapshot. A 72% climbing is a healthier business than an 80% sliding.
The studios that manage this well are not chasing a magic number. They are reading the shape of demand across the week and pulling the right lever in the right slot. Whether you do that in a spreadsheet or in a tool like kaizenwell, the discipline is the same. Stop asking whether your fill rate is good. Ask whether your peaks are captured and your quiet hours are earning their place. That question has an answer you can act on.
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