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Funnel Conversion Calculator

Stage-by-stage conversion rates and the worst drop-off, found.

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Overall conversion

—

Weakest stage—
Total lost—

Quick Tool Overview

The Funnel Conversion Calculator takes four stage counts and returns every stage-to-stage conversion rate, the overall rate, the drop-off at each step, and the stage that is leaking most.

What it does
Calculates stage-by-stage and overall funnel conversion rates
You give it
The number of people at each of four funnel stages
You get back
Every stage rate, drop-off counts, and the weakest stage named
Best for
Finding which step in a funnel to fix first
Marketing Tools Free, unlimited use No sign-up Runs in your browser

About the Funnel Conversion Calculator

An overall funnel conversion rate tells you something is wrong but never where. Breaking it into stage-to-stage rates does, because one bad step almost always accounts for most of the loss — and it is rarely the step people assume.

Enter the number of people at each of four stages, from first visit through to purchase, and the calculator shows the conversion rate between each pair, the overall rate from top to bottom, and how many people were lost at every step.

It then names the weakest stage — the one shedding the largest share of the people who reached it — and estimates what fixing it would be worth, by showing how many extra conversions a realistic improvement at that one step would produce.

Key features of the Funnel Conversion Calculator

Weakest stage named

By lowest conversion rate, not by largest raw drop.

Improvement estimate

Shows what a modest fix at the worst stage would be worth.

Custom stage names

Label the stages to match your own funnel.

Formula shown

Every rate is written out with your own numbers in it.

How to use the Funnel Conversion Calculator

  1. 1

    Name your four stages

    Visitors, leads, opportunities and customers, or your own equivalents.

  2. 2

    Enter the count at each stage

    Each number should be smaller than the one above it.

  3. 3

    Read the stage-to-stage rates

    Plus how many people dropped out at every step.

  4. 4

    Check the weakest stage

    Named for you, with what a modest improvement there would be worth.

Frequently asked questions

Stage-to-stage rate = Stage B count ÷ Stage A count × 100. Overall rate = Final stage ÷ First stage × 100, which also equals all the stage rates multiplied together.

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