The benchmarks: what a healthy B2B funnel actually converts

You cannot manage a pipeline you can't benchmark. Here is what the data says a B2B funnel converts, stage by stage, so you know whether a leak is a you-problem or just physics.

• Visitor to lead: 0.8% to 2.5% for most B2B sites; top performers reach 3% to 5%. SEO traffic converts richer than paid — around 2.1% visitor-to-lead against 0.7% for PPC, per HubSpot's conversion benchmarks.
• Lead to MQL: 20% to 40% when scoring and enrichment are tuned.
• MQL to SQL: 15% to 35%. This is the consistent bottleneck across B2B — fast follow-up and clear qualification criteria are what move it.
• SQL to opportunity: 30% to 50% when discovery has real quality.
• Opportunity to won (win rate): SaaS median sits at 20% to 25% per Winning by Design benchmarks, with top-quartile teams reaching 30% to 35% when proof is strong and the proposal process is tight.
• Average deal cycle: 14 to 90 days for most B2B SaaS, with the median around 30 to 45 days for deals under £25k and 60 to 90 days for enterprise.

Multiply those through and the headline is sobering: a typical B2B funnel converts roughly 2.3% of leads to revenue. That's not a reason to despair — it's a reason to know your own numbers cold, because every percentage point at the MQL-to-SQL step is worth more than ten new visitors at the top.

A solo founder running a B2B HR software product benchmarked their funnel against these numbers and found their SQL-to-opportunity rate was 19% — well below the 30% to 50% range. The diagnosis: discovery calls were happening with unqualified contacts (the budget holder wasn't in the room). One change — requiring the economic buyer on the discovery call as a qualification criterion — lifted SQL-to-opportunity to 34% in eight weeks. Same leads, same founder, same product. Different station.

Know your numbers, find your weakest station against these benchmarks, and fix that one first. Then re-measure. For the complete win-rate playbook and what's actually driving the gap between median and top-quartile teams, see Accelerate your pipeline and Convert more pipeline.