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Sales Funnel Retention Rate Calculator

Calculate how many prospects are retained at each stage of your sales funnel and estimate the overall conversion from leads to customers.

Your Details

Overview

This sales funnel retention rate calculator helps you measure how well prospects move through key funnel stages, from initial leads to qualified leads, proposals, and customers. Enter your stage counts and average deal value to estimate retention rates, overall conversion, and revenue from closed deals.

How it works

The calculator compares each funnel stage with the one before it to find the retention rate at that step. It also compares customers won with total initial leads to calculate overall conversion. Estimated revenue is calculated by multiplying customers won by the average deal value. This makes it easier to spot where drop-off is highest and where funnel improvements may have the biggest impact.

How to use this calculator

  1. 1Enter the total number of initial leads entering your funnel.
  2. 2Add how many of those leads became qualified leads.
  3. 3Enter how many prospects reached the proposal or demo stage.
  4. 4Input the number of customers won.
  5. 5Enter your average deal value to estimate revenue and review the stage retention rates.

Example Calculation

Initial leads

1000

Qualified leads

400

Proposals or demos

150

Customers won

45

Average deal value

$2,500

Overall conversion rate

4.5%

With 1000 leads, 400 qualified leads, 150 proposals, and 45 customers, the overall conversion rate is 4.5%. At an average deal value of 2500, estimated revenue is 112500.

Frequently asked questions

What does this sales funnel retention calculator estimate?

It estimates the percentage of prospects retained at each funnel stage, the overall conversion from leads to customers, and estimated revenue from won deals.

What is the difference between retention rate and conversion rate in a funnel?

Retention rate usually refers to how many prospects move from one stage to the next, while overall conversion rate measures how many initial leads become customers.

Can I use different funnel stage names?

Yes. The labels here use common stages, but you can map them to your own process as long as the numbers represent sequential stages.

Why is my overall conversion rate lower than each stage rate?

Overall conversion measures the full journey from first lead to customer, so it reflects all drop-off across the funnel rather than a single step.

Does estimated revenue include repeat purchases or upsells?

No. This calculator uses only the average deal value you enter for the customers won in the funnel.

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Assumptions and warnings

Assumptions

  • The funnel stages are sequential, with leads moving from initial leads to qualified leads, then proposals, then customers.
  • Each stage count refers to the same reporting period.
  • Estimated revenue is based on a single average deal value for all won customers.
  • Results are descriptive estimates and do not account for refunds, upsells, repeat purchases, or pipeline timing.