Funnel Leak Detector
Free MQL to SQL conversion rate calculator — enter your funnel numbers and see which stage is dropping the most leads, plus what fixing it would add to pipeline.
Your Funnel Stages
Total visits per month — find this in Google Analytics or your hosting dashboard.
Form fills, demo requests, chat captures, trial signups — everything that enters your funnel.
Leads your team flagged as a fit for sales. If you don't track MQLs formally, use leads that met your basic ICP criteria.
Leads sales confirmed are worth pursuing — had a call, showed real buying intent, match your ideal customer.
Active deals in your pipeline right now — companies you are in active conversation with.
Deals closed from the opportunities above — not total leads. This is your opp-to-close count, not your overall lead close rate.
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MQL to SQL Conversion Rate Calculator: Finding and Fixing the Stage That Costs You the Most
Funnel efficiency measures how effectively your marketing and sales process converts a visitor into a closed customer across five distinct stages: Visitor to Lead, Lead to MQL, MQL to SQL, SQL to Opportunity, and Opportunity to Closed-Won. Most B2B organisations lose 95–99% of their visitors before a deal closes — but where that loss occurs determines the fix.
The most expensive funnel leak is rarely where teams assume. A visit-to-lead rate of 2% looks alarming, but improving it to 4% only doubles your leads — and does nothing if MQL-to-SQL conversion is 5%, meaning most of those extra leads will never reach your sales team anyway. The highest-leverage improvement is always at the stage with the worst conversion rate relative to benchmark, not the stage with the most absolute drop-off.
The 2026 benchmark for overall B2B funnel conversion (visitor to closed customer) sits between 0.1% and 0.5% for high-performing organisations. A rate below 0.02% indicates a systemic problem — not a single stage issue — and typically requires both a messaging and a process intervention simultaneously.
0.1–0.5%
Benchmark: Visitor-to-Closed-Won Rate
3–7%
Benchmark: Visit-to-Lead Rate
25–35%
Benchmark: Opportunity-to-Won Rate
What is your biggest revenue challenge today?
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