How the math works
The calculator does four multiplications, and you can check every one of them:
- Missed calls a month = calls per week × share missed × 52 ÷ 12.
- Callers you actually lose = missed calls × (1 − share who call back on their own).
- Jobs lost = callers lost × your close rate.
- Revenue lost = jobs lost × average job value. Yearly is that times 12.
With the starting numbers (40 calls a week, a quarter missed, half of new callers booking, a $350 ticket) that is about 43 missed calls, 22 jobs and roughly $7,600 a month. Your numbers will be different, and they should be. The point is to put a dollar figure on something most owners only feel as background noise.
Use your own numbers, not an industry average. You will see claims online about what share of calls small businesses miss. Most don't say where they come from. Your phone already knows: open your recent calls, count last month's missed calls from numbers you don't recognize, and divide by four.
What the result doesn't count
The figure is revenue from the first job only. It leaves out repeat work, maintenance agreements, referrals, and the review a happy customer might leave. It also ignores the time you spend calling back numbers that never pick up. On the other side, it assumes every missed call is a real customer, so be strict about spam and wrong numbers when you count.
Ways to stop losing those calls
- Answer more yourself. Free, but every call you take on a ladder or under a sink costs time on the job in front of you.
- A family member or office helper. Works during set hours; nights, weekends and lunch breaks still slip through.
- A live answering service. Real people, usually billed by the minute or call. Good for complex calls, pricier at volume. See AI vs live answering services.
- An AI receptionist. Answers every time, books into your calendar, and costs a flat monthly fee. See what an AI receptionist does and costs.
- Text back after a missed call. A quick text keeps the caller from dialing the next company. See how missed call text back works.
Where Connie fits
Connie is an overflow AI receptionist. Your phone rings first; only calls you don't pick up forward to it. It answers, asks the questions you set, books the visit into Google Calendar, and emails you a summary. Plans start at $79 a month for 150 minutes ($49, 300 minutes fair use, for the 20 founding members), then $0.35 a minute past the plan (less on Pro and Scale), no contract. No setup fee on any plan. It is pre-launch, onboarding a small group of founding members. See it for your trade: HVAC, plumbing, electrical, garage door, roofing.