Free tool
Use hours, spring sets and inspection time in your studio
See how many hours a year each carriage runs, when spring sets fall due and what routine checks cost you in staff time.
Free tool, no sign up
What an empty carriage costs you over a year
Enter your carriage count, class volume and average empty spots to see the annual revenue sitting in unsold reformer capacity.
An empty reformer is the most perishable inventory in fitness. The class runs, the instructor is paid, the rent accrues, and the spot expires at the moment the class starts. Owners feel this but rarely price it, because two or three empty carriages a class looks small until you multiply it by fifty weeks.
This calculator does that multiplication. It also asks what share of freed spots a working waitlist would refill, which is the honest way to size the gap between capacity you own and capacity you sell.
Your result
Average spots sold per class
7.6
Your working average against the carriages you own.
Unsold spots per year
3,840
Every carriage that ran a class with nobody on it.
Annual revenue in unsold spots
$130,560
What that unsold capacity would have billed at your blended rate.
Recovered by a working waitlist
$58,752
The share you get back when freed carriages are offered automatically.
Only spots released by clients can be refilled, so treat the recovery figure as the ceiling on what a waitlist can do for you.
Why the blended rate matters more than your drop in price
Owners who run this math with their drop in rate get a number that flatters the studio and misleads the decision. Most spots on a busy reformer schedule are sold through packs and memberships at a lower effective price, and a few are comped for referrals or staff family.
Take last quarter's class revenue, divide by spots actually attended, and use that figure. It is usually several dollars below the posted rate, and it is the number that should drive whether you add a class, cut one, or work harder on refilling the ones you have.
Where empty spots hide in a weekly grid
Averages conceal the pattern. In most US boutique studios the six in the morning and five thirty evening classes run full while ten in the morning, one thirty and eight at night carry the empties. Run this calculator twice, once for your peak block and once for the off peak block, and you will see two different businesses inside one schedule.
That split changes what you do next. Peak empties are a cancellation and refill problem. Off peak empties are a level mix and audience problem, and no waitlist will fix a class that nobody wanted in the first place.
Questions about this calculator
What is a realistic number for average empty spots per class?
Owners who track it usually land between one and a half and three empty carriages per class across a full week, with peak classes near zero and mid morning classes carrying most of the gap. Pull four weeks of rosters and average the unsold spots rather than guessing. The number is often worse than owners expect and better than they fear once they separate peak from off peak.
Does the recovery share include no shows?
No. A no show never releases the spot, so there is nothing for a waitlist to offer and the carriage runs empty anyway. Only cancellations made before class create a refillable spot, which is why a cancellation deadline that clients actually meet is worth as much as the waitlist itself.
Should I use this to decide whether to buy more reformers?
Use it as the first check, not the last. If you are already carrying two or three empty carriages in most classes, more equipment adds rent and financing without adding revenue. Buy more carriages when your peak block runs full with a standing waitlist and your off peak block is at least reasonably filled.
More free tools and working documents
Working document
A cancellation, late arrival and waitlist policy you can fill in
Twenty clauses to complete, written for a studio where one empty carriage is one hour of unrecoverable revenue.
Take the figure into a live studio
A number on this page stays an argument until something in the room changes. Bring the inputs you just entered, the carriage count, the class volume and the weeks open, and we will show you the same studio running with per apparatus capacity, automatic refill of a released carriage and a spring change that drops bookable spots by itself. About thirty minutes, and you will know whether your figure moves.