Revenue lost to missed calls is the monthly value of inquiries that went unanswered and booked elsewhere. You can estimate it with four numbers you already know or can pull from your phone system in five minutes.
What four numbers do you need?
- Weekly inbound inquiries across every channel: calls, WhatsApp, texts, emails, web forms.
- The share you miss. If you have never measured it, the industry benchmark for appointment-based businesses is 23 to 42 percent.
- The share of answered inquiries that become bookings.
- Your average appointment value.
What is the formula?
Monthly lost revenue = weekly inquiries x miss rate x 4.33 x booking rate x average value. The 4.33 converts weeks to months. The result is an estimate of bookings that would have happened if every inquiry had been answered.
Do you have to do this by hand?
No. The free missed revenue calculator runs this exact math with sliders for the benchmark ranges. The result stays on your screen, no email required.
How accurate is the estimate?
It is a ceiling-and-floor exercise, not an audit. Your real leak depends on when inquiries arrive and how fast each channel is answered. That is what the free leak audit measures: we contact your business like a customer at realistic hours and send you the actual findings. Estimate first, verify second.