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Sales Funnel Churn Rate Calculator

Calculate how many prospects drop off at each stage of your sales funnel and estimate your overall churn and conversion rates.

Your Details

Overview

This sales funnel churn rate calculator helps you measure how many prospects drop out at each stage of your funnel, from initial leads to closed customers. Enter the number of leads at each step to estimate stage-by-stage churn and your overall conversion rate.

How it works

The calculator compares the number of prospects at one stage with the number that reached the next stage. Stage churn is calculated as the percentage lost between two consecutive stages, while overall churn is the percentage of original leads that did not become customers. Overall conversion is the percentage of original leads that became customers.

How to use this calculator

  1. 1Enter the number of initial leads at the top of your funnel.
  2. 2Add the number of prospects remaining after each funnel stage.
  3. 3Enter the final number of customers won.
  4. 4Review the churn rate for each stage and the overall conversion rate.
  5. 5Compare stage drop-off rates to spot the biggest bottlenecks.

Example Calculation

Initial leads

1000

Stage 1 prospects

650

Stage 2 prospects

320

Stage 3 prospects

120

Customers won

45

Overall churn rate

95.50%

With 1000 initial leads and 45 customers won, the overall conversion rate is 4.50% and the overall churn rate is 95.50%. The highest drop-off occurs in the final stage at 62.50%.

Frequently asked questions

What does this calculator estimate?

It estimates the percentage of prospects lost at each stage of a sales funnel and the overall conversion from leads to customers.

What is churn in a sales funnel?

In this context, churn means the share of prospects that drop out before reaching the next funnel stage or becoming customers.

What is the difference between churn rate and conversion rate?

Churn rate shows the percentage lost, while conversion rate shows the percentage that successfully moved through the funnel or became customers.

Can I use this for any type of sales funnel?

Yes, as long as your stages follow a clear sequence and each stage count represents the same period and definition.

Why do my results look wrong?

Results can be misleading if stage totals are not in order, if stages use different date ranges, or if leads are counted more than once.

What should I do with a high stage churn rate?

A high churn rate can point to a weak step in your funnel, such as qualification, follow-up, pricing, or closing, which may need further review.

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Assumptions and warnings

Assumptions

  • Each stage total should be less than or equal to the previous stage total.
  • All leads are counted within the same reporting period.
  • The calculator treats churn as funnel drop-off rather than customer subscription churn.
  • Results are estimates based entirely on the stage counts you enter.

Warnings

  • This calculator provides an estimate only and should be used alongside your own sales and CRM data.
  • Make sure each stage uses consistent definitions and time periods to avoid misleading results.