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Missed Calls Cost Calculator
See what your service business is losing every month to missed phone calls and unanswered after-hours web inquiries. Honest math. Sourced defaults. Adjust to match your business.
Tell us your numbers
Honest defaults below — tweak to match your business.
Your Google Analytics or Search Console number, monthly.
Industry average for service businesses is 3–5%.
What one new customer is worth to you, all-in.
You're losing roughly
$11,016
every month, to leads that arrive while no one's there to catch them.
With Ovox you recover
$4,284/mo
That's $51,408 a year — for $197/mo.
Ovox pays for itself 21× over — every single month.
Conservative assumptions. Honest math.
Real customers, every month.
How the missed-calls cost calculation works.
Most service-business owners under-estimate what they’re losing to missed calls by 5–10× — because they only count the calls they remember missing. The actual leak is invisible: after-hours inquiries that never appeared in voicemail, web visitors who closed the tab without submitting a form, prospects who called once and immediately tried a competitor.
The three-step model
- Inbound volume. Pull your monthly web visitors (Google Analytics or Search Console) plus your monthly inbound phone calls (CallRail, your carrier dashboard, or a rough count). For most service businesses, web inquiries are 2–3× phone-call volume.
- Lead conversion rate. Of total inbound, 3–5% are real buyers. The rest is research, comparison-shoppers, wrong numbers, and sales pitches. This is the industry-standard service-business lead rate per multiple SMB studies.
- Customer lifetime value. Average first-visit ticket × typical repeat frequency = LTV. For a dental practice that’s $1,800 year-one; for an HVAC contractor, $650 per service call; for a personal-injury law firm, $5,000–$15,000 per case.
Why the after-hours number is so high
Most service-business inquiries arrive outside a 9-to-5 window — the standard CallRail SMB inbound benchmark puts roughly two-thirds of phone and form volume between 6pm and 8am, with weekends adding another spike. The combination of (a) voicemail capture rate near zero, (b) the 47-hour average response time documented in the Lead Response Management literature, and (c) the well-replicated finding that the first responder wins the lion's share of the deal means the after-hours leak typically dwarfs the in-hours one.
What to do about it
Your three real options are: (1) hire a 24/7 answering service ($300–$2,000/mo, capped per call/minute), (2) hire a night-shift receptionist ($3,000–$5,000/mo plus benefits), or (3) install a 24/7 AI receptionist ($150–$300/mo flat). The math in the calculator usually picks itself.
Sources: Harvard Business Review — Oldroyd, McElheran & Elkington, “The Short Life of Online Sales Leads” (2011) · InsideSales / Velocify Lead Response Management Study · Drift 2024 State of Conversational Marketing · CallRail SMB inbound benchmarks 2024.
Calculator FAQ
Common questions about the missed-calls math.
How much money does the average small business lose to missed calls?
According to multiple SMB phone-performance studies, the average service business misses 38% of inbound calls during business hours and 100% after hours. At a typical 3–5% lead-conversion rate and a $500–$2,000 average customer LTV, this works out to $3,500–$18,000 per month in lost revenue for a typical solo to small-team service business. The calculator above lets you plug in your own numbers for an exact estimate.
What’s the difference between a missed call and a lost lead?
A missed call is any inbound phone call that doesn’t reach a human (or capable AI agent) before the caller hangs up. A lost lead is a missed call where the caller was actually a buyer (vs a wrong-number, sales pitch, or unrelated query). Typically 3–5% of all inbound calls are real buyers; the rest is noise. The calculator only counts the real-buyer fraction.
How many of my missed calls are after-hours?
Across SMB service-business inbound benchmarks (HBR, InsideSales / Velocify, CallRail), roughly two-thirds of inbound inquiries arrive between 6pm and 8am. Most service businesses are staffed during only ~20% of buying intent. That single mismatch is the biggest hidden leak in small-business revenue.
Why is the AI capture rate set to 28% by default?
A conservative estimate. Modern AI receptionists (including Ovox) capture 25–40% of inbound conversations into a booked appointment or qualified lead, depending on vertical. We default to 28% to stay below the marketing-claim line; real-world Ovox deployments often run higher once intake fields are calibrated.
Does this calculator just exist to sell me your product?
Partly — yes, we’re Ovox and we’d like you to try our $197/mo flat-fee AI receptionist. But the calculator runs on industry-standard formulas and would produce the same answer for any AI receptionist product (or a hired human one). The math is honest; the conclusion is "fix the leak with something." We just think Ovox is the cheapest and easiest something.
Where do the numbers come from?
The default rates are sourced from: Harvard Business Review — Oldroyd et al., “The Short Life of Online Sales Leads” (2011), the InsideSales / Velocify Lead Response Management Study, Drift 2024 State of Conversational Marketing, and CallRail SMB inbound benchmarks 2024. Vertical-specific lifetime-value defaults come from public industry benchmarks (NFDA for funeral homes, ADA for dental, NAR for real estate, etc).
Is there an email gate on this calculator?
No. We don’t collect your email to use the calculator. Everything runs in your browser — the numbers never touch our servers, and we can’t see your results unless you tell us. If you decide to try Ovox after running the math, the demo container on the homepage builds you an agent on your real website in 30 seconds.
Can I share or embed this calculator on my own site?
You can link to this page from anywhere without restriction. We don’t currently offer an embed widget, but if you’d like one for your own SMB-services blog or industry publication, email contact@ovox.ai and we’ll set it up.
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One last thing.
While you finished reading this page,
a customer landed on a competitor's site
and got the conversation started immediately.
That customer isn't coming back. Neither is the one before. Or the one tomorrow at 9pm.
The bleeding stops the moment Ovox is live on your site.
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