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Free lead funnel calculator & marketing funnel calculator. Analyze conversion rates across funnel stages, identify leakage points, and optimize your sales funnel. Our calculator tracks MQL to SQL conversion, opportunity rates, close rates, and overall funnel performance for B2B, SaaS, and e-commerce businesses.
Last updated: February 2, 2026
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Total visitors, impressions, or initial leads
Leads that meet marketing qualification criteria
Leads accepted by sales team
Active sales opportunities or proposals
Converted customers
Average revenue per customer
Average cost to acquire each top-of-funnel lead
Overall Conversion Rate
0.25%
25 customers from 10,000 leads
500 MQLs from 10,000 leads
200 SQLs from 500 MQLs
100 opportunities from 200 SQLs
25 customers from 100 opportunities
Total Revenue
$125,000
CAC
$20,000
Total Cost: $500,000
Recommendations:
Critical Funnel Issues: Overall conversion rate is very low (<1%). Major optimization needed across all stages.
Funnel Optimization Tips:
Marketing metrics
MQL & SQL Tracking
Measures lead qualification and marketing-to-sales handoff
Sales metrics
Opportunity & Close Rates
Tracks SQL to opportunity to customer conversion
Conversion analysis
End-to-End Rate
Measures overall visitor to customer conversion
B2B metrics
Long Sales Cycle Analysis
Optimized for complex B2B sales processes
Leakage analysis
Drop-off Point Detection
Pinpoints stages with lowest conversion rates
Financial metrics
CAC & Revenue Analysis
Tracks cost per acquisition and funnel ROI
B2B funnel with 10,000 leads, 500 MQLs, 200 SQLs, 100 opportunities, 25 customers:
Lead→MQL
5%
MQL→SQL
40%
SQL→Opp
50%
Close Rate
25%
Overall
0.25%
Our lead funnel calculator analyzes conversion rates at each stage of your marketing and sales funnel using standard B2B metrics and benchmarks. The calculator tracks leads from initial contact through MQL qualification, sales acceptance (SQL), opportunity creation, and final customer conversion, identifying leakage points and optimization opportunities.
MQL Conversion Rate = (MQLs / Total Leads) × 100SQL Conversion Rate = (SQLs / MQLs) × 100Opportunity Rate = (Opportunities / SQLs) × 100Close Rate = (Customers / Opportunities) × 100Overall Conversion = (Customers / Total Leads) × 100CAC = Total Cost / CustomersThese formulas calculate conversion rates at each funnel stage and identify where leads are dropping off. The calculator also computes financial metrics like CAC (Customer Acquisition Cost) and ROI to measure funnel profitability.
Shows conversion rates and lead volume at each stage from top of funnel to customer
A typical B2B lead funnel consists of multiple qualification stages. Top of Funnel (ToFu) captures all initial leads or visitors. Marketing Qualified Leads (MQLs) are leads that meet marketing criteria based on engagement and fit. Sales Qualified Leads (SQLs) are MQLs accepted by sales as worth pursuing. Opportunities are SQLs that have expressed interest and entered the sales process. Customers are closed-won opportunities.
Need help with other marketing calculations? Check out our cost per lead calculator and conversion rate calculator.
Get Custom Calculator for Your PlatformAnalysis: Good Funnel Performance
Conversion rates at each stage are within B2B benchmarks. However, CAC ($20,000) exceeds deal size ($5,000), indicating this funnel needs higher-value customers or lower acquisition costs. Recommendations: Focus on larger enterprise deals ($20,000+ AOV), reduce cost per lead through organic channels, or improve close rate through better qualification and sales enablement.
5,000 visitors → 200 add to cart (4%) → 75 purchases (37.5%)
Overall Conversion: 1.5% (good for e-commerce)
50,000 impressions → 1,000 clicks (2%) → 100 leads (10%)
Overall Conversion: 0.2% (typical for cold traffic)
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