For service businesses
Free missed call revenue calculator
Use the missed call revenue calculator to estimate the new customers, revenue and gross profit that unanswered calls put at risk each week, month and year.
- Free to use
- No account needed
Revenue at risk
$2,184.00a month in this scenario, including $1,092.00 gross profit
Each missed call is worth about $42.00 ($21.00 gross profit) at your numbers.
- Missed calls a week
- 12
- Lost potential customers a week
- 3.6
- New customers at risk a week
- 1.44
New customers at risk are the callers you would likely have won. They are expected values from your percentages, so they can be fractions.
A week
- New customers at risk
- 1.44
- Revenue at risk
- $504.00
- Gross profit at risk
- $252.00
A month
- New customers at risk
- 6.24
- Revenue at risk
- $2,184.00
- Gross profit at risk
- $1,092.00
A year
- New customers at risk
- 74.88
- Revenue at risk
- $26,208.00
- Gross profit at risk
- $13,104.00
How this is calculated
- 60 calls × 20% missed × 50% new potential customers × 60% who do not call back or book elsewhere × 40% close rate = 1.44 new customers at risk a week
- New customers at risk × $350.00 average job × 1 job per new customer a year = $504.00 revenue at risk a week
- Revenue at risk × 50% gross margin = $252.00 gross profit at risk a week
- A month is 52 ÷ 12 weeks and a year is 52 weeks. Each amount is rounded once, to the cent.
Add a monthly answering cost to see how many recovered customers a month would cover it.
Every percentage is your own assumption. The starting numbers are editable, not industry figures.
Change numbersUse it from an AI browser
This page has site tools: actions an AI agent can call directly, with no plugin or API key. The ChatGPT desktop app’s browser can use them where site tools are available, and so can Chrome with WebMCP turned on. The agent works on this page, with the same steps and limits as its buttons, so you can check the result before you use it.
Open doany.ai/tools/missed-call-revenue-calculator and work out what my missed calls cost me: we get about 18 calls a day over 6 days a week, miss around 30% of them, roughly 45% are new potential customers and half of those never call back or book elsewhere, we close 35% of new callers, an average job is $650 with 2 jobs per customer a year at a 40% margin, and compare it with a $299-a-month answering service.
Site tools work only while this page is open. They never send messages, invoices or payments for you.
Put a number on missed calls with the missed call revenue calculator
The missed call revenue calculator turns your call volume and a few percentages you estimate into an expected number of lost new customers. Start from your phone log and replace each starting assumption with your own.
Count calls from your log
Open your phone or call-tracking log, count inbound calls for a typical day, week or month, then the ones nobody answered. In the missed call revenue calculator, choose that period under Calls counted per and enter the total. Under Calls missed (%), enter missed calls ÷ total calls as a percentage: 12 of 60 is 20. Run a busy season and a quiet one separately.
Narrow missed calls down to lost customers
Not every missed call is a lost job. Estimate how many missed callers were new potential customers, how many of those never got through or booked someone else, and how often you win the job when you do answer. Each percentage applies to the result of the step before it.
Add job value and margin
Enter your average job value, how many jobs a new customer usually books in a year and your gross margin. The missed call revenue calculator shows revenue and gross profit at risk, writes out the formula with your numbers and, if you enter one, compares a monthly answering cost.
Fit the inputs to the way your calls arrive
The missed call revenue calculator uses one formula. What changes between businesses is which calls count and what a new customer is worth.
A solo tradesperson on job sites
What to change
Run the missed call revenue calculator on a normal working week, when you are on jobs and cannot always pick up. Count calls that went to voicemail during jobs, and set the no-callback share from how many of those callers you actually reached later.
Before you use it
Keep calls you returned within minutes in the missed count. If those callers usually still booked, leave them out of the no-callback share.
A recurring service, such as cleaning or lawn care
What to change
Raise jobs per new customer in a year to the visits a typical recurring client books, for example 26 for every two weeks. The missed call revenue calculator then counts each lost customer’s first-year revenue.
Before you use it
Enter the average price per visit across the first year as the average job value, not a contract total. Jobs per new customer already counts the visits.
An office with after-hours calls
What to change
Run the missed call revenue calculator twice: once for calls during opening hours and once for evenings and weekends, each with its own missed share and no-callback share.
Before you use it
After-hours callers who leave a message and get a reply next morning may not be lost. Set the no-callback share to match.
Check your missed call revenue calculator inputs
- Call counts come from a typical day, week or month in your own log, not one unusually busy day.
- Existing customers, suppliers, spam and wrong numbers are left out of the new-customer share.
- The close rate matches how often you win the new callers you do speak to.
- Gross margin is after direct job costs such as labor and materials, not after every overhead cost.
- An answering cost is compared as a scenario. Recovering any caller is not guaranteed.
The starting numbers, step by step
At 60 calls a week, 20% missed is 12 missed calls. Half are new potential customers and 60% of those do not call back or book elsewhere, which leaves 3.6. A 40% close rate gives 1.44 new customers at risk a week. At $350.00 a job that is $504.00 of revenue, and at a 50% gross margin, $252.00 of gross profit.
Weeks, months and years
A month is 52 ÷ 12 weeks, so the monthly figure is the weekly one × 4.333…, and a year is 52 weeks. The missed call revenue calculator keeps every step exact and rounds each displayed amount once, half up to the cent. With repeat work, each period counts the first-year revenue of the new customers missed in it.
Why gross profit is the fairer comparison
Revenue at risk includes the cost of doing work you never got. Gross profit at risk is what those jobs would have left after direct costs, which makes it the better number to set against the cost of answering more calls.
Sources checked on October 4, 2026: Google Phone app Help: call history lists calls you made, answered or missedApple Support: iPhone call history, filtered to Calls or Missedopens in a new tab
Questions about this tool
How do I calculate revenue lost from missed calls?
Multiply weekly calls by the share you miss, the share of missed callers who are new potential customers, the share who do not call back or book elsewhere and your close rate. That gives new customers at risk. Multiply by average job value and jobs per new customer in a year for revenue. The missed call revenue calculator does each step and shows the formula with your numbers.
How do I find my missed-call share?
Count inbound and unanswered calls for a typical week in your phone or call-tracking log. Google’s Phone app lists calls you made, answered or missed, and the iPhone Phone app can filter call history to Missed. Divide missed calls by the total and enter that percentage in the missed call revenue calculator.
Which callers count as new potential customers?
People asking about work you could do for them who have not booked with you before. Leave existing customers, suppliers, sales calls, spam and wrong numbers out of that share. If you are unsure, listen back to a week of voicemails or check the numbers against your customer list.
What about callers who leave a voicemail or call back?
They are not lost if you reach them and they still book. The no-callback share in the missed call revenue calculator should only include new callers who never got through, hung up without a message or booked someone else before you replied.
What close rate should I use?
Use your own: of the new potential customers you do speak to, how many book a job. Quote records or your calendar can show this. The starting 40% is an editable assumption, not an industry figure, and every amount at risk in the missed call revenue calculator moves in direct proportion to it.
Should I look at revenue or gross profit?
Use revenue at risk to size the work you may be missing, for example when you plan crew hours or a sales goal. Use gross profit at risk when you weigh a cost against it. The missed call revenue calculator shows both, and its answering-cost comparison uses gross profit.
I only know calls a day or a month. What do I enter?
Set Calls counted per to Day or Month and enter the count from your log. For a day, add the days you take calls each week. The missed call revenue calculator converts it to a week and shows that step in its formula. Divide missed calls by all calls over the same period and enter the result as a percentage under Calls missed (%).
How do I compare the cost of answering more calls?
Enter the monthly cost of any option you are weighing, such as staff time, an answering service or call forwarding. The missed call revenue calculator shows how many recovered customers a month would cover it at your first-year gross profit per customer, and whether this scenario’s gross profit at risk is above that cost. It cannot tell you how many callers an option would actually recover.