What is funnel conversion rate?
Funnel conversion rate is the share of prospects that move from one stage to the next, and from the top of the funnel all the way to a closed deal. An overall rate tells you the headline; the stage rates tell you where you lose people.
The stage view is the useful one. A 3% lead-to-won rate is just a number until you see that most of the drop happens between SQL and won.
The funnel conversion formula.
For any stage: conversion rate = count at the next stage divided by count at the current stage, as a percentage. Overall conversion = deals won divided by leads. This tool computes both at once.
Use one cohort and one period. Mixing this month's leads with last quarter's closes distorts every rate.
A worked example.
From 1,000 leads you get 400 MQLs, 120 SQLs, and 30 closed deals. That is 40% lead to MQL, 30% MQL to SQL, 25% SQL to won, and 3% overall. The biggest drop is the last stage.
What is a good funnel conversion rate?
It depends entirely on where your funnel starts and how you define each stage, so the benchmark is your own trend. What matters more is the shape: find the stage with the steepest drop and fix that one, rather than pushing more volume through a leak.
The final stage, SQL to won, is your win rate. If that is where the funnel leaks, the problem is qualification or fit, not traffic.
How to improve funnel conversion.
Fix the weakest stage first. More leads into a funnel that leaks at the bottom just wastes more leads; tightening the worst stage lifts the overall rate fastest.
Lead quality sets the ceiling on every downstream stage. Prospects from intent-driven organic search convert better through the whole funnel than broad paid traffic. See how we improve funnel quality with SEO.