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Missed Call Cost Calculator

Every unanswered ring is a customer deciding whether to wait — or call your competitor. Enter four numbers about your business and see what missed calls are really costing you each year. Free, instant, no signup.

Your numbers

Include voicemails, engaged tones, and calls outside opening hours.
What a typical new customer is worth to you.
Roughly what share of enquiries normally become customers.

What it's costing you

Lost revenue per year
£0
Per month
£0
Missed calls per year
0

An AI phone agent answers 100% of your calls, 24/7 — typically for a small fraction of the number above.

See AI Phone Agents 📞 Call the live demo

How the calculation works

No hidden assumptions — the formula is exactly what you'd write on the back of an envelope. We take your missed calls per day and multiply by your open days to get missed calls per year (52 weeks). Then we apply your own conversion rate — the share of callers who would realistically have become customers — and multiply by your average job value.

missed calls/day × days open/week × 52 weeks × conversion % × average job value (£) = lost revenue/year

The real cost is usually higher than this number. It doesn't count repeat business from customers you never won, word-of-mouth referrals they would have sent, or the marketing money you already spent making that phone ring. If anything, treat the result as a floor, not a ceiling.

// frequently asked

Missed Calls — Questions & Answers

It's an estimate built from your own numbers, not ours. The formula is simple and shown on this page: missed calls per year × the share of callers who would have bought × your average job value. Change any input and the result updates instantly.
Check your phone system's call log or your mobile's missed-call list for a typical week, and count voicemails — then add calls that come in when you're closed. Most businesses undercount, because out-of-hours calls and engaged-tone hang-ups never show up anywhere.
Because a caller with money in hand rarely waits. Someone who reaches voicemail usually just phones the next business on the search results page — so a missed call is often a customer your competitor gains. New-customer enquiries are the most expensive to miss, since you also paid marketing costs to make the phone ring.
Three main routes: hire more staff (flexible but expensive, still misses out-of-hours calls), use a human answering service (cheaper, but per-call fees add up and they can only take messages), or deploy an AI phone agent that answers every call 24/7, books appointments, and hands over to your team when needed.
A one-off setup fee plus a monthly cost that scales with call volume — for most UK businesses, far less than the revenue shown in this calculator and a fraction of a receptionist's salary. See our AI Phone Agents page for how it works and pricing details.
Yes — call our live demo on +44 20 4511 4077 and you'll be talking to Thalia, a production AI voice agent, in seconds. Judge the call quality yourself before you spend anything.

Stop paying for missed calls.

Tell us about your business and we'll show you exactly what an AI phone agent would handle for you.

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