GTM Fundamentals · intermediate · node 4.5

Conversion & funnel math

Conversion rate at each funnel stage is the numerator (won deals or progressed opportunities) divided by the denominator (deals at that stage). Improvement comes from optimizing each stage: higher top-of-funnel conversion (better targeting), higher mid-funnel conversion (faster qualification), higher close rate (stronger deal management). Funnel math ties conversion rates to revenue: if you have 100 leads, 50% convert to MQL, 25% to SQL, 20% to close, that is 5 closed deals. At $100k ACV, that is $500k revenue. To double revenue, you can double any input: 2x leads, 2x MQL rate, 2x SQL rate, or 2x close rate. Most teams find 2x conversion improvement (e.g., 15% → 30% close rate) is easier than 2x lead volume.

intermediate Last updated 2026-06-25

Prerequisites

Funnel & the bowtieFunnel design

Conversion is the percent of prospects that move from one funnel stage to the next. A funnel with 100 MQLs and 50 SQLs has a 50% MQL-to-SQL conversion rate.

Funnel math: Revenue = Leads × (MQL %) × (SQL %) × (Close %) × ACV

If you have:

1,000 leads per month
20% convert to MQL (200 MQLs)
50% convert to SQL (100 SQLs)
30% close (30 closed deals)
$100k ACV

Then: 1,000 × 0.2 × 0.5 × 0.3 × $100k = $3M revenue per month.

To double revenue, you have four levers:

2x leads: 2,000 leads (hard—requires 2x marketing budget)
2x MQL rate: 40% (easy—better targeting reduces friction)
2x SQL rate: 100% (impossible, but 50%→60% is realistic)
2x close rate: 60% (hard but possible with better sales enablement)

Most teams find conversion improvement is fastest: moving from 20% to 30% MQL rate is quicker and cheaper than growing lead volume by 50%.

Conversion varies by source:

Content-sourced leads: 30–50% MQL-to-SQL (they are warm and educated)
Referral leads: 40–60% MQL-to-SQL (credibility is pre-sold)
Cold email: 1–3% MQL (cold, needs education)
PLG trials: 10–30% trial-to-MQL (user-initiated, already engaged)

Identify your leaky stage (lowest conversion) and optimize it, not the strongest one. If your lead quality is good but close rate is 10%, sales process is the bottleneck, not marketing.

Key takeaways

Conversion at each stage = (deals that progressed) / (deals at that stage).
Funnel math: Revenue = (Top-of-funnel volume) × (Conversion rates at each stage) × (ACV).
To improve revenue, optimize conversion OR increase pipeline volume OR increase ACV. Most teams find conversion improvement is fastest.
Conversion varies by source and motion. (PLG trials → MQL = 40%; cold email → MQL = 1%.) Optimize the leaky stage, not the strong one.

Related concepts

Lead types and qualificationPipeline & coverage

How to cite this

@misc{shalvi_gtm_fundamentals_conversion_funnel_math_2026,
  author = {Singh, Shalvi},
  title  = {Conversion & funnel math},
  year   = {2026},
  url    = {https://shalvisingh.com/gtm/fundamentals/conversion-funnel-math},
  note   = {GTM World Model — GTM Fundamentals}
}

Singh, Shalvi. "Conversion & funnel math — GTM Fundamentals." shalvisingh.com, 2026. https://shalvisingh.com/gtm/fundamentals/conversion-funnel-math