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Where does my funnel leak?

Enter your numbers below. Get the answer first, then Koala's next move.

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Result detail level
Numbers to enter
Use one sequential funnel and period: visits ≥ add-to-carts ≥ checkouts started ≥ completed orders. If your analytics events are not nested this way, do not mix them in this calculator.
Koala's Calculated Result
Stage conversion rates and the largest percentage-point loss in the valid sequential funnel.

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The detailed explanation will appear here once the calculator has a result.

The largest percentage loss is a diagnostic, not proof of root cause or the highest-return optimisation. Investigate measurement quality, traffic mix and economics before acting.

Koala's Professional Opinion

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Definition and method

What this calculator answers

Per-stage drop-off from sessions → add-to-cart → checkout → orders, plus the biggest drop stage.

Per-stage conversion

Conversion per stage = (start − end of stage) ÷ start. The per-stage drift on the funnel — the diagnostic for the biggest drop stage.

Worked example: your figures

The interactive result above is the worked example. Change any input and the same deterministic engine recomputes the answer; this page does not insert a generic example business or silently treat example values as a benchmark.

  • No market benchmark or outcome is silently inserted by this page.

What should I check next?

Frequently asked questions

What does a funnel drop-off analysis do?

Use the calculator result for the inputs entered and keep any market-response or operating recommendation separate from the deterministic calculation. Support that additional assumption with the business’s own evidence or an explicitly labelled scenario.

Funnel Drop-Off

What stage typically has the biggest drop?

Use the calculator result for the inputs entered and keep any market-response or operating recommendation separate from the deterministic calculation. Support that additional assumption with the business’s own evidence or an explicitly labelled scenario.

Funnel Drop-Off

How big a drop is normal?

There is no universal numeric benchmark for this decision. The right comparison depends on the industry, geography, business model, time period and exact metric definition. Use the business’s own history, economics and explicit target unless a verified benchmark matching that scope is available.

Funnel Drop-Off

Should I measure per source?

Yes — paid social converts differently from email, organic search converts differently from paid search. A source-split funnel reveals where each drop stage ranks — and points to the right optimisation.

Funnel Drop-Off

Educational use, not financial advice. Numbers are estimates for planning; consult a qualified professional before acting on them.