Missed call revenue calculator: see what missed calls are costing you.
Every unanswered call is a customer who picked up the phone to spend money — and most of them never call back. Move the sliders below to see how much revenue you're leaking to missed calls each year, and how much of it instant text-back can recover. No email required, nothing gated, just your number.
Your numbers, your loss.
Start with the defaults or adjust each input to match your business. The big number on the right updates as you go.
— roughly $8,288/month
Missed calls/yr = missed calls/week × 52
Leads lost/yr = missed calls/yr × (never-call-back %)
Revenue lost/yr = leads lost/yr × close rate × avg customer value
Recoverable = revenue lost/yr × 50%
The most expensive line item you never see.
Missed calls don't show up on any invoice, which is exactly why most operators never count them. There's no bill that says "you lost tens of thousands in revenue this year because the phone rang and nobody could pick up." The loss is invisible — it hides inside lunch rushes, after-hours quiet, busy signals, and the ten minutes you stepped away from the desk. But it's real money, and it's money you've already paid to generate. Every one of those callers found you through your marketing, your reputation, or your sign out front. You spent to make that phone ring, and then the lead walked because there was no one to answer.
Here's the part the calculator makes concrete: those callers aren't patient. The widely cited figure is that around 85% of callers who reach voicemail never leave a message — they hang up and dial the next result (see the full missed-call & lead-response statistics, every figure sourced). So a missed call isn't a "call them back later" situation. For most of them, it's a lead that's gone the instant the ringing stops. Multiply that by your call volume, your close rate, and what a customer is worth, and the annual number gets large fast. That's not a scare tactic; it's just multiplication, and you can see every step of it in the formula above.
The good news is that the same speed that loses the lead can win it back. An instant text-back reaches the caller within seconds — while they're still holding their phone, still motivated, before they've finished dialing the next business. Instead of a voicemail nobody checks, the caller gets a message from your number and a way to reply on the spot. You don't have to answer every call to capture every caller. The recovery figure in this calculator assumes you win back only half of those leads, which is deliberately conservative — the point is that even a modest recovery rate turns a five-figure annual leak into recovered revenue. See exactly how the whole system works, then start a free trial and stop the bleed.
Questions about the calculator.
How does this missed call revenue calculator work?
You enter four numbers: how many calls you miss per week, the average value of a closed deal, your close rate on answered leads, and the share of missed callers who never call back. The calculator multiplies missed calls out to a yearly figure, applies the never-call-back rate to find leads lost, then multiplies by your close rate and deal value to estimate revenue lost per year. Every output updates live as you move the sliders, and the underlying formula is shown on the page so you can check the math yourself.
How much are missed calls actually costing me?
It depends on your call volume, your deal size, and how often you close — which is exactly why the calculator exists. As a rough anchor: a business that misses 15 calls a week, closes 30% of answered leads, and earns $500 per customer is leaking roughly $99,000 a year in revenue to calls that were never answered, assuming 85% of missed callers never call back. Plug in your own numbers for a figure that reflects your business rather than an average.
Why does the calculator assume 85% of missed callers never call back?
Because most callers who reach a business and don't get through simply move on to the next result instead of calling back or leaving a voicemail. We use 85% as the default because it lines up with the widely cited statistic that the large majority of callers who hit voicemail never leave a message. It's a slider, not a fixed value — if your audience is more loyal or more likely to retry, lower it and the estimate adjusts.
How much of that lost revenue can I realistically recover?
The calculator's recovery figure is deliberately conservative: it assumes you win back half of the leads you were losing. Instant text-back works because it reaches the caller within seconds, while they're still holding the phone and still motivated. Real reply rates on missed-call texts often run higher than 50% of recoverable leads, so the recovery number here is meant to be a floor you can beat, not a ceiling.
Stop losing this money.
You just put a number on the leak. Now close it. Ironscale texts every missed caller from your business number in under 3 seconds — and turns hang-ups into conversations in your pipeline.