It's Scott Gilbert

The Magic Ratio Calculator

Marketing either pays for itself or it quietly eats your month. Two numbers decide which: what a new client costs you, and what a client is worth to you in kept profit. Enter both and get a verdict.

Your result is only as accurate as your answers. Gut-feel is fine on every question. If you truly can't picture a number, pick I'm not sure and we'll use a disclosed estimate.
Section A

What a new client costs you

Everything you spent to get new clients in the last 30 days, divided by the new clients who showed up.

1
Ad spend

In the last 30 days, what did you spend on ad platforms? Meta, Google, and any others, combined.

$ last 30 days
2
Agency or retainer

What did you pay an agency or marketing retainer this month? Enter 0 if you don't use one.

$ this month
3
Sales labor

What did you pay your team this month for selling time? Consults, quotes, phone closes.

$ this month
4
New clients

How many new clients came in over the same 30 days?

new clients

Rent, software, and fixed costs stay out of this number on purpose. They come back in the verdict.

Section B

What a client is worth to you

Not what they hand you at the desk. What you keep, over their whole stay with you.

5
Purchase count

How many times does a typical client purchase over their whole stay with you?

6
Average purchase

What does a typical purchase collect?

$ per purchase
7
Gross margin

On a typical purchase, what share do you keep after product cost and provider pay?

Your result

Your magic ratio

0 of kept profit for every $1 a client costs you

Below 1eats money
1 to 3working for free
3 to 4alive
4 and upfunds itself

The verdict

The one lever to pull first

Rough math, not an audit. It uses one typical month and one typical client. Real clinics wobble. Run your own numbers.