How does the missed call calculator work?

It multiplies five numbers you enter. Missed calls are your monthly calls times the share you miss. Lost leads are missed calls times the share who don't call back. Lost revenue is lost leads times your close rate times your average customer value. The annual figure is the monthly figure times 12. Your numbers stay in your browser.

Why doesn't the calculator fill in typical numbers?

Call volume, missed-call rates, callback rates, close rates and job values vary widely from one business to the next, and we don't want to put a figure in front of you that isn't yours. Use your own phone records and sales numbers so the estimate reflects your business.

Where do I find my missed call numbers?

Most phone systems and carriers have a call log or report that lists missed, unanswered or abandoned calls. Count a full month if you can. To estimate how many missed callers never call back, check which missed numbers don't appear again in your log within a few days.

Is the recoverable revenue figure a guarantee?

No. It's an estimate built only from the numbers you enter, including your own guess at how many missed calls an AI voice agent would answer. Actual results depend on your callers, your offer and how you follow up. It doesn't include call usage costs unless you enter them.

Does floGPT have a free plan?

Yes. floGPT pricing is Free (100 messages/month), paid plans from $49/month. Voice agents need a paid plan because they use real telephony, and calls and SMS are billed as usage on top of the plan. Current plan details and usage rates are on the floGPT pricing page.

Missed call calculator: what unanswered calls cost you

Enter your own call numbers to see what missed calls may be costing you each month and each year. The calculator multiplies your missed calls by the share of callers who don't call back, your close rate and your average job value. Every number comes from you, and nothing is pre-filled. It's free, with no login.

Inbound calls per month

Calls from potential customers in a typical month. Your phone system's call log is the best source. Leave out spam and calls from existing customers if you can.

Calls you miss (%)

Share of those calls nobody answers: after hours, busy lines, or calls sent to voicemail.

Missed callers who don't call back (%)

Your best estimate. Check which missed numbers never show up again in your call log.

Callers who become customers (%)

Of the callers you do speak to, the share who end up booking or buying.

Average value of a new customer ($)

What a typical new job, booking or sale is worth to you. Use your own sales records.

Missed calls an AI voice agent would answer (%), optional

Your own estimate of how many of today's missed calls an AI voice agent would pick up. Leave blank to skip the recoverable-revenue line.

Plan cost per month ($), optional

The plan you'd use. floGPT: Free (100 messages/month), paid plans from $49/month. Voice agents need a paid plan. See pricing

Expected call usage per month ($), optional

Calls and SMS are billed as usage on top of the plan. Estimate yours from the usage rates on the pricing page.

Fill in the first five fields to see your estimate.

How the math works

Missed calls per month = inbound calls × calls you miss %
Lost leads per month = missed calls × missed callers who don't call back %
Lost revenue per month = lost leads × callers who become customers % × average customer value
Lost revenue per year = lost revenue per month × 12
Recoverable revenue per month = lost revenue per month × missed calls an AI voice agent would answer %
After costs per month = recoverable revenue per month − plan cost − expected call usage

How to lower missed calls

Route calls before they ring out. Send calls to a second person or a shared line when the first one is busy, instead of straight to voicemail.
Make voicemail a next step. Tell callers when you'll call back, and ask for the details you need to quote or book.
Set a callback rule. Pick a time limit for returning missed calls and track it. The callback figure you enter above is a good starting measure.
Cover after-hours and busy periods. An AI voice agent can answer inbound calls, answer common questions and capture the caller's details for your team. See how to set up an AI voice agent for inbound calls.

Who uses this

Home services · Dental and healthcare · Legal · Insurance · Real estate · Auto dealers

Any business that books work over the phone can use the calculator. Enter your own numbers either way.

Stop sending callers to voicemail

Set up an AI voice agent that answers inbound calls, and see every conversation in one CRM inbox.

Free (100 messages/month), paid plans from $49/month. Calls and SMS are billed as usage on top of the plan.

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How this calculator works. Every input comes from you, and the calculator doesn't add industry averages, benchmarks or third-party statistics. The math is the formulas shown above. The annual figure assumes every month looks like the one you entered, so it doesn't account for seasonality. The calculator doesn't model repeat business, customer lifetime value, or callers who reach you some other way (web form, email, a competitor). Recoverable revenue depends entirely on your own estimate in field 6. Results are rounded. Your numbers stay in your browser. Published by FloGPT (Pulse Real LLC). Last reviewed November 3, 2026.