Missed call calculator: see how much revenue your unanswered calls leak.
Enter a few numbers from your phone log. The scanner shows what missed calls cost you each year, where the leak happens (business hours or after hours) and what one missed call is worth.
ESTIMATE ONLY, CALCULATED FROM THE NUMBERS YOU ENTER. NOT A FORECAST OR GUARANTEE. NOTHING YOU ENTER IS STORED OR SENT.
The missed-call formula, in four steps.
- STEP 01
Missed calls
Calls per week × the share you miss, counted separately for business hours and after hours, × 52 weeks.
- STEP 02
New customers lost
Missed calls × the share from new customers × the share of new callers you normally win.
- STEP 03
Revenue leak
New customers lost × the average value of a new customer.
- STEP 04
Cost of one missed call
Revenue leak ÷ missed calls a year. Use it to compare against what answering every call would cost.
Questions about missed calls.
How do you calculate the cost of missed calls?
Multiply your missed calls a year by the share that are new customers and by the share of new callers you usually win. Then multiply by the average value of a new customer. The scanner above does this for you, split by business hours and after hours.
What percentage of business calls go unanswered?
It varies widely by business, so measure your own. One widely cited 2016 study by 411 Locals tracked 85 small businesses for 30 days and found about 62% of calls were not answered by a person. Other studies report lower rates, so use one week of your own phone log.
Do callers leave a voicemail when a business does not answer?
Many do not. In a 2025 CallRail survey of 1,000 US consumers, 42% said they leave a voicemail, while 21% said they immediately call another business.
How do I stop losing revenue from missed calls?
Make sure every call gets answered: add call forwarding, an answering service or an AI receptionist that answers 24/7, books appointments and passes urgent calls to your team.https://axonarc47.com/services/ai-receptionist/”>AI receptionist that answers 24/7, books appointments and passes urgent calls to your team.
Is this missed call calculator accurate?
It is only as accurate as the numbers you enter. It is an estimate, not a forecast or a guarantee. Nothing you enter is stored or sent.
Every missed call is a customer you paid to attract.
See how an AI receptionist answers every call, books appointments and hands urgent ones to your team.