Is the conversion default of 30% realistic?

It is a deliberately cautious share of people who contact you and never hear back. Change it to what you know about your own follow-up: the page recalculates instantly and also shows the result at 10%.

Is this calculator free and does it store my data?

It is free, needs no signup, runs entirely in your browser and stores nothing. No cookies, no analytics, and the numbers are never sent anywhere.

Should I buy anything if my leak is small?

No. Under about $500 a month the page says so plainly and tells you to fix your follow-up habit first, which is free. Anything paid only makes sense once the leak is far larger than its price.

Leak calculator — what missed work costs you each year

Q: How is the monthly leak calculated?

Monthly leak = (manual admin hours per week x weeks per month x your hourly value) + (ignored enquiries per week x weeks per month x conversion rate x average job value). The full formula is printed on the page so you can check it by hand.

Hours per week on manual admin

Quoting, chasing payments, copying the same details between messages, appointments you re-enter by hand.

What an hour of your time is worth ($)

Enquiries ignored or unanswered per week

Average job value ($)

Those who would have bought (%)

Weeks you operate per month

Nothing is sent anywhere. Every figure below recalculates as you type, and this page stores nothing on your device.

Where the numbers come from

No magic — just arithmetic you can check

admin cost  = hours/week × weeks × hourly value
lost sales   = ignored enquiries × weeks × conversion × job value
monthly leak = admin cost + lost sales

The conversion default (30%) is a deliberately cautious share of people who contact you and never hear back. Change it — you know your own follow-up better than any default.

Every assumption, labelled

Where each default comes from — and what it is not

6 hrs/week on adminYour own entry — not a statistic

$45/hour for your timeA placeholder, set your real rate

4 ignored enquiries a weekIllustrative, not measured

$350 average job valueIllustrative, not measured

30% would have boughtA cautious share, not a benchmark

What this is: an estimate built from numbers you entered yourself, using arithmetic printed above. What this is not: a measurement of your business, a promise of results, or a guarantee that anything you do will recover the figure. Actual outcomes depend on your market, your follow-up and how the work is carried out.

Stress test the sceptical case. If only 10% of those ignored enquiries would have bought instead of 30%, you are still leaking $0 a month — because the admin cost alone does not move when the conversion guess changes.

Common questions

Before you ask

How is the monthly leak calculated?

Admin cost + lost sales, using the formula printed above. Nothing is hidden and nothing is estimated on our side — every input is yours.

Is the 30% conversion guess too high?

Possibly — that is why the page also shows the result at 10%. If the number still matters at 10%, the problem is real whatever the exact percentage is.

Do you store my numbers?

No. Everything runs in your browser, nothing is uploaded, and the page sets no cookies. The only thing that leaves your device is a link you choose to copy.

My leak is small — should I buy anything to fix it?

No. Under about $500 a month the page says so plainly and tells you to fix your follow-up habit first. That costs nothing but the time it takes.

Pricing calculator Invoice generator

What is your admin costing you?

No magic — just arithmetic you can check

Where each default comes from — and what it is not

Before you ask