Free tool

How much revenue is ringing through while you're on a job?

Plug in your weekly call volume, the percentage you miss, your close rate, and your average ticket. We'll show the monthly and annual revenue at risk — and how much an auto-text-back recovers.

Skip ahead to the calculator See missed-call text-back

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Sample result

$32,400 / yr at risk

Based on 60 calls/week, 30% missed, 40% close, $450 ticket.

Lost jobs / week 1.4

Revenue at risk / month $2,700

Recovered with text-back $16,200 / yr

Calculator

Your inputs → the revenue you’re losing.

Numbers update live as you type. Nothing is sent to our server unless you choose to email yourself a copy.

Inputs

Inbound calls per week

All inbound to your business line, new leads + existing customers.

Please enter a number from 1 to 2,000.

% of calls you miss

Most field-service shops miss 25–40% during peak season because hands are full or it’s after hours.

Please enter a number from 0 to 100.

% of inbound calls that are new-business leads (vs. existing customers)

Only leads convert to new revenue. Existing customers calling about a billing question don’t.

Please enter a number from 0 to 100.

Your close rate on new leads (%)

Of every new lead that talks to you, what % becomes a paying job?

Please enter a number from 0 to 100.

Your average ticket ($)

What one newly-closed job is typically worth. We use a single ticket, not lifetime value — so the real cost of a lost recurring customer is higher than this number.

Please enter a dollar amount from 1 to 100,000.

Your result

—

Type your inputs to see what’s at risk.

Missed lead calls / week —

Lost jobs / week —

Revenue at risk / month —

Revenue at risk / year —

Recovered with auto-text-back (50%) —

See missed-call text-back Try Grunlo free

Methodology

How the math works.

How we turn your inputs into dollars

Start with calls per week. Apply your miss rate (how often nobody picks up) and your lead rate (how many of those calls are real jobs, not spam or vendors). That gives an estimate of missed lead calls per week.
Multiply by your close rate to get lost jobs per week. We assume a missed call is a lost opportunity—no callback, no voicemail follow-through—so this is intentionally conservative.
Multiply lost jobs by your average ticket to get weekly revenue at risk.
Scale up: annual uses 50 working weeks (leaving two slower weeks out so the number isn’t inflated), and monthly is simply that annual figure ÷ 12 — so the two always reconcile.
Recovered revenue applies a 50% recovery rate to the at-risk amount. That’s the middle of the range industry vendors cite for auto-text-back; your real rate will vary.

Why the 50% recovery assumption?

Industry telecom data on auto-text-back response rates ranges roughly 35–65% — you’ll see vendors quote everything from 30% to 80% depending on the segment they’re selling. We pick 50% as a transparent middle so the number you see isn’t inflated. Grunlo’s own auto-text-back tracks its conversion in the inbox so you can see the real rate once you’re running it.

What this calculator doesn’t account for

Lifetime value of a recurring customer (the calculator uses a single ticket, not LTV)
Word-of-mouth lost when a frustrated caller tells their neighbor
Reputation cost from Google reviews mentioning “couldn’t get them on the phone”

All three push the real cost higher than the number above — but quantifying them honestly is hard, so we leave them out.

Adjacent features

If those numbers hurt to read, here’s what fixes them.

Missed-call text-back

Automatic SMS to every caller you miss within 30 seconds. From your dedicated business number, with the thread landing in your shared inbox for follow-up.

See missed-call text-back →

Dedicated phone number

10DLC-registered business number for SMS compliance. Required for branded auto-text-back senders so the message doesn’t come from a shared shortcode.

See dedicated number →

Customer portal

The auto-text can include a link to your branded request-a-quote form so leads self-qualify while they wait for your reply.

See customer portal →

FAQ

Missed-call questions, plain answers.

Everything you need to know before getting started.

It’s the conservative middle of the published industry range (35–65%). Some shops see higher because they reply quickly with a useful first message; others see lower because the auto-text reads generically. Once you’re running it, the inbox shows your real rate so you can recalibrate.

For the lost-job number, yes — the “at risk” column treats a missed call as gone. In practice, some callers do leave a voicemail or call back, but most don’t. We default to the worst case so the recovery number under auto-text-back is meaningful.

Weekly smooths out the spike of Monday morning vs. the lull of Saturday and matches how most owners think about call volume. The annual figure uses 50 working weeks, and the monthly figure is that annual number divided by 12 so they always reconcile.

Correct — the calculator runs entirely in your browser. The only data we receive is what you optionally type into the “email me a copy” form, and that goes into our standard contact-request inbox.

Stop losing the caller while you're on a ladder.

The calculator gives you a number. Grunlo gives you the auto-text and the inbox to follow up from.

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