Voice ROI calculator, what an AI phone assistant recovers for you.

Calculate how many missed calls and how much revenue potential an AI phone assistant recovers for you. Interactive, no price, in one minute.

How much does the phone nobody answers cost you? The voice ROI calculator estimates in under a minute how many calls you miss today, how many of them an AI phone assistant recovers and what revenue potential sits behind that. All numbers are your own inputs, the math is transparent and serves as a rough orientation, not a guarantee.

Does this fit your business? Book your strategy call directly at our booking calendar or write to info@ki-telefonassistent.co.

Voice ROI calculator

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80 Missed calls per month
56 Recovered calls per month
17 New customers or appointments per month
4,200 € Recovered revenue per month
0 € Optional extra outbound revenue per month
4,200 € Total potential per month
50,400 € Revenue potential per year

Illustrative estimate based on your inputs, no prices and no offer. The calculation runs only in your browser.

Review your call use case

In detail

What the calculator is for

Many businesses sense that calls get lost but do not know the number. The calculator makes the gut feeling tangible. It takes your call volume, your estimated miss rate and your value per won customer and shows what an AI phone assistant can recover per month and per year. The result is deliberately conservative and illustrative. It does not replace a detailed calculation, but helps you decide whether a closer look is worth it.

Process

Input fields

The calculator uses these inputs, with sliders or number fields:

  1. 01 Incoming calls per month (number) Roughly how many calls reach your business per month.
  2. 02 Share of missed calls in percent (slider 0 to 60) Share of calls that go unanswered today, for example outside hours or during peaks.
  3. 03 Share of missed calls the AI recovers in percent (slider 0 to 100). How many of the missed calls the assistant is expected to answer.
  4. 04 Conversion rate from call to customer or appointment in percent (slider 0 to 100). How often an answered call becomes a customer or booked appointment.
  5. 05 Value per won customer or appointment in euros (number) Your average contribution margin or order value per customer.

Optional as a second block for outbound: Automated advertising calls need the prior express consent of the person called, also in B2B (§ 7 (2) no. 3 UWG).

  1. 01 Open leads per month to follow up (number).
  2. 02 Additional contact rate from consistent follow-up in percent (slider 0 to 100).

Tool

Calculation logic

All intermediate values are calculated and shown live.

  • Missed calls per month = Incoming calls x (Share missed / 100).
  • Recovered calls per month = Missed calls x (AI recovery rate / 100).
  • New customers or appointments per month = Recovered calls x (Conversion rate / 100).
  • Recovered revenue per month = New customers x Value per customer.
  • Recovered revenue per year = Recovered revenue per month x 12.
  • Optional outbound block: Additional contacts = Open leads x (Additional contact rate / 100). Additional customers = Additional contacts x (Conversion rate / 100). Additional revenue per month = Additional customers x Value per customer.
  • Total potential per month = Recovered revenue plus optional additional revenue.

Output as three large key figures: recovered calls per month, new customers or appointments per month, revenue potential per year. Below a note that this is an illustrative estimate based on your inputs and contains no prices.

In detail

How to read the result

The most important figure is usually the annual potential. Even with cautious assumptions it quickly becomes clear that missed calls add up to a meaningful amount over the year. If your result is high, a closer look at your case is worth it. That is exactly what we do in the strategy call: we check your real numbers, look at inbound and outbound and honestly say which use case has the biggest lever.

Want to see how this looks for you specifically? Book your strategy call: Book a strategy call or write to info@ki-telefonassistent.co.

Booking

Book a strategy call

Book your strategy call via the calendar: Book a strategy call. Alternatively, reach us by email at info@ki-telefonassistent.co.

Or send an email to info@ki-telefonassistent.co

Review your call use case

FAQ

Frequently asked questions

01 How accurate is the calculator?
The calculator gives a rough, illustrative estimate based on your own inputs. It uses simple, transparent formulas and deliberately cautious assumptions. It does not replace a detailed analysis, but quickly gives you a feel for the scale of your missed potential.
02 Why does the calculator show no cost?
Because the price of an AI phone assistant depends heavily on your setup and blanket numbers would mislead. The calculator deliberately focuses on revenue potential. You get a concrete quote in the strategy call, once we know your case.
03 Which values should I enter when unsure?
Enter the numbers you know best, such as your call volume and value per customer. For the miss rate, an honest estimate is enough. You can run several scenarios to see a range.
04 What do I do with the result?
Take the result as a reason for a closer conversation. If the annual potential is noticeable, a look at a concrete start is worth it. In the strategy call we check your real numbers and recommend the use case with the biggest lever.