Free tool

ROI calculator for an average gym

Tweak realistic gym numbers and see how day-30 ROAS, sales and month-by-month profit change.

Inputs

Monthly ad spendDKK 15,000

How much is invested into ads each month. The cap is set to DKK 30,000 because most gyms stay below that.

CPLDKK 175

Cost per lead. Lower CPL creates more leads from the same spend.

CPAptDKK 900

Cost per booked appointment. Shows how efficiently leads turn into sales conversations.

Manual sales count

Show rate65%

Share of booked appointments that actually show up.

Close rate from shown appointment30%

Share of shown appointments that turn into a sale.

Front-end revenue per saleDKK 1,500

What the customer pays inside the first 30 days, such as an intro, startup or trial package.

Monthly membership revenueDKK 599

Monthly recurring revenue from customers who continue.

Membership attach rate70%

Share of front-end customers who continue into membership.

Expected retention9 mo.

How long a new member stays paying on average.

Day-30 ROAS0.4xDKK 6,238 day-30 revenue from DKK 15,000 spendDay 30 is below break-even. The scenario needs stronger price, sales, show rate or cheaper acquisition.

Sales3.385.7 leads -> 16.7 booked -> 10.8 shownShows how many new customers the campaign is expected to create per month.

Break-evenNot within 12 mo.The scenario needs better unit economicsIn this scenario, recurring revenue does not pay back spend within 12 months.

12 mo. profit-DKK 23,384DKK 5,274 revenue per sale over retentionNegative profit means acquisition, price, sales or retention needs to improve.

Month-by-month profit

Shows the compounding effect of new members from each month's campaign.

Scenario

Rough forecast with both front-end cash and the membership base.

Month	Leads	Booked	Shown	Sales	New members	Revenue	Profit	Cum. profit
Month 1	85.7	16.7	10.8	3.3	2.3	DKK 6,238	-DKK 8,762	-DKK 8,762
Month 2	85.7	16.7	10.8	3.3	2.3	DKK 7,600	-DKK 7,400	-DKK 16,162
Month 3	85.7	16.7	10.8	3.3	2.3	DKK 8,963	-DKK 6,037	-DKK 22,199
Month 4	85.7	16.7	10.8	3.3	2.3	DKK 10,326	-DKK 4,674	-DKK 26,873
Month 5	85.7	16.7	10.8	3.3	2.3	DKK 11,689	-DKK 3,311	-DKK 30,184
Month 6	85.7	16.7	10.8	3.3	2.3	DKK 13,051	-DKK 1,949	-DKK 32,133
Month 7	85.7	16.7	10.8	3.3	2.3	DKK 14,414	-DKK 586	-DKK 32,719
Month 8	85.7	16.7	10.8	3.3	2.3	DKK 15,777	DKK 777	-DKK 31,942
Month 9	85.7	16.7	10.8	3.3	2.3	DKK 17,140	DKK 2,140	-DKK 29,802
Month 10	85.7	16.7	10.8	3.3	2.3	DKK 17,140	DKK 2,140	-DKK 27,663
Month 11	85.7	16.7	10.8	3.3	2.3	DKK 17,140	DKK 2,140	-DKK 25,523
Month 12	85.7	16.7	10.8	3.3	2.3	DKK 17,140	DKK 2,140	-DKK 23,384

The biggest levers

CPL, CPApt, show rate, close rate, front-end price, membership attach rate and retention. These are the numbers that actually move the scenario.

Keep the model simple

Profit here means revenue minus ad spend. That keeps the forecast easy to use in a sales conversation without opening the full operating model.

Day 30 is cash

Day-30 ROAS uses front-end revenue plus the first month of membership from new members. Longer retention is shown in the month-by-month view.