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The missed-call calculator
See what unanswered enquiries could mean for your revenue. Enter four numbers to explore your monthly exposure.
Need help with the numbers?Every call that reaches your business. Check your phone bill or your call log for a typical month.
%
Missed, voicemail, engaged and after-hours. Most owners guess low here, so check before you accept your own estimate.
$
Across everything you invoice. A diagnostic call and a system replacement both count.
%
Of the callers you do speak to, how many become paid work.
Revenue exposed to unanswered calls
$11,250
a month
- Calls you never spoke to
- 50
- a month
- Jobs those calls would have become
- 25
- a month, at your close rate
- Over a year
- $135,000
- at the same rate
We will look at your actual numbers with you. No charge, no obligation.
How this is worked out
- Calls you never spoke to = inbound calls × the percentage you do not answer.
- Jobs those calls would have become = those calls × the percentage of enquiries you win.
- Revenue exposed = those jobs × your average job value.
- The annual figure is the monthly one multiplied by twelve.
This is an estimate built entirely from the four figures you entered. It is not a guarantee of revenue, and it is not a claim about what we would recover. Some of those callers would never have booked, some call back, and some are the same person twice. Treat it as the size of the problem worth investigating, not as money on the table.
Calculator FAQ
Understand your estimate.
What does the missed-call calculator estimate?
It estimates monthly revenue exposed to unanswered enquiries using your call volume, missed-call percentage, close rate and average job value. It is a planning scenario, not a measurement of revenue you have lost or a promise of revenue you will recover.
How is the missed-call revenue figure calculated?
Monthly calls multiplied by the missed-call percentage gives estimated missed calls. Multiply that by the close rate and average job value to estimate monthly revenue exposure. For example, 250 calls, 20% missed, a 50% close rate and a $450 average job value produce $11,250 per month. The annual figure multiplies that monthly scenario by twelve.
Where should I get the monthly call volume for this calculator?
Use a recent full month from your phone-system call log. Focus on new customer enquiries and exclude spam, suppliers, internal calls and repeated attempts from the same person where possible. Use the same definition of an enquiry when calculating your missed-call and close rates.
How do I calculate my unanswered-call percentage?
Divide unanswered customer enquiries by all incoming customer enquiries for the same period, then multiply by 100. Check how your provider labels missed calls, abandoned calls, voicemail and calls that ring out. Treat callers who later booked separately if you want a more conservative scenario.
Which average job value should I enter?
Divide revenue from the relevant completed jobs by the number of those jobs. Use a consistent revenue basis and a period that reflects your current work. If repairs and installations have very different values, calculate each service separately instead of letting a few large installations dominate the average.
What close rate should I use if I do not track one?
Compare answered new enquiries with the jobs they became, using your call log and job records for the same group of enquiries. If you cannot establish a rate, try a conservative and an optimistic assumption. Compare both results rather than treating the default 50% as an industry benchmark.
Does the result account for repeat callers and callbacks?
Not automatically. The calculator only uses the four numbers you enter. Several missed attempts from one caller can inflate the result, and a caller who books after your callback may not represent lost work. Clean your input data or lower your assumptions to reflect those cases.
Should I calculate after-hours calls separately?
Yes, if you want to assess after-hours coverage. Filter your call log to evenings, weekends or your chosen coverage window, then use call volume and other assumptions for that window. Avoid combining after-hours call volume with an unanswered percentage calculated across the whole business.
How should I account for busy seasons in the annual estimate?
The annual result assumes the month you entered repeats twelve times. For seasonal work, run separate scenarios for busy and quiet months, then add the monthly estimates for a representative year. A peak-season month alone may overstate annual exposure.
Does the calculator show revenue or profit?
It shows potential revenue exposure, not profit. Labour, materials, travel, overhead and the cost of call handling are not deducted. To assess whether a solution pays for itself, consider the contribution from additional completed jobs and your available capacity.
Can other home and commercial service businesses use this calculator?
Yes. The calculation can be used for plumbing, electrical, cleaning, roofing and other businesses that receive job enquiries by phone. Enter values from your own business. For recurring contracts, choose a consistent job-value basis rather than mixing one-off invoices with lifetime contract values.
Do I need to sign up or submit my calculator inputs?
No sign-up is required to see the result. The calculation runs in your browser. Requesting an analysis is a separate step; using the sliders does not place an order or submit a contact enquiry.
How can I use the estimate to choose a call-handling solution?
Start by checking your call records and callback process. Compare an on-call rota, a human answering service and an AI receptionist against your coverage needs, handover rules, integrations and cost. Use a trial to measure additional completed jobs and service quality. The calculator alone cannot predict what any option will recover.