Tool

Full-Funnel Conversion Calculator

Model your complete marketing and sales funnel from traffic to revenue. Find the stages with the biggest leverage points and see the exact revenue impact of a 10% improvement at each stage. Free funnel calculator, no signup.

Conversion rate optimisation conversations almost always happen in one place: the landing page. What percentage of visitors to this page convert to leads. But a landing page conversion rate is a single data point in a multi-stage process, and optimising it in isolation often produces disappointing results because the constraint is somewhere else in the funnel entirely.

A full-funnel model shows you the entire journey from first visit to closed customer. It makes visible the stages where volume is being lost, calculates the revenue impact of improving each stage, and ranks your optimisation priorities by return. The insight is almost always counterintuitive. The stage with the worst conversion rate is rarely the stage where improvement has the most impact. What matters is where volume is largest and where a small improvement compounds most.

This tool models your funnel from top to bottom, calculates the end-to-end conversion rate, and shows you which single stage, if improved by ten percent, would generate the most additional revenue. That ranked list is the strategic output. It tells you where to focus before you spend a dollar on optimisation.

Funnel model
Funnel shape
Funnel summary
Monthly visitors
0
entering the funnel
Customers won
0
per month
End-to-end CVR
0%
visitor to customer
Monthly revenue
$0
at current ACV
Revenue per visitor
$0.00
blended efficiency
Where to focus: biggest leverage points
Ranked by revenue impact of a 10% improvement
Scenarios: what if you improved one stage by 20%?
ACV for revenue calculation
Average contract or order value
$

Methodology

The funnel model calculates volume at each stage by multiplying the volume at the previous stage by the stage conversion rate. Starting from top-of-funnel traffic, each subsequent stage retains only the percentage defined by its conversion rate, with the remainder dropping out of the funnel.

The end-to-end conversion rate is calculated by dividing the number of customers at the bottom of the funnel by the number of visitors at the top, expressed as a percentage. This number is typically a fraction of one percent for most B2B funnels and between one and five percent for most e-commerce funnels.

The leverage ranking is calculated by running a sensitivity analysis across all stages simultaneously. For each stage, the model calculates the revenue impact of a ten percent improvement in that stage's conversion rate, holding all other stages constant. The stage where a ten percent improvement produces the largest revenue increase is ranked first. This is often not the stage with the lowest conversion rate, because leverage is a function of both the conversion rate and the volume passing through the stage.

How to use this tool

  1. Select your funnel model: B2B and SaaS, e-commerce, lead generation, or custom
  2. Enter your monthly visitor volume at the top of the funnel
  3. Adjust conversion rates at each stage to match your actual data
  4. Enter your average contract or order value for revenue calculations
  5. Review the leverage ranking to identify which stage to optimise first

Frequently asked questions

What is a marketing funnel?
A marketing funnel is a model that represents the stages a customer moves through from first awareness of a product to purchase. The term funnel reflects the fact that volume decreases at each stage as prospects drop out. Common funnel stages for B2B businesses include visitor, lead, marketing qualified lead, sales qualified lead, opportunity, and customer. E-commerce funnels typically include visitor, product page view, add to cart, checkout, and order.
What is a good end-to-end funnel conversion rate?
End-to-end conversion rates vary significantly by industry, business model, and funnel definition. For B2B SaaS businesses, visitor to customer rates of 0.5 to 2 percent are common. For e-commerce, one to four percent visitor to purchase conversion is a typical range. For lead generation businesses, visitor to qualified lead rates of one to five percent are common. The more useful benchmark is your own historical rate and the improvement trajectory over time.
What is funnel leverage and why does it matter?
Funnel leverage describes the revenue impact of improving a specific stage's conversion rate. A stage has high leverage when the volume of prospects passing through it is large and the current conversion rate leaves significant room for improvement. Leverage analysis prevents the common mistake of optimising the easiest stage or the most visible stage rather than the stage where improvement has the greatest revenue impact.
Why should I model my full funnel rather than just my landing page conversion rate?
Landing page conversion rate is a local measurement. It tells you how a specific page performs in isolation but not how it contributes to your overall revenue efficiency. A landing page with a five percent conversion rate that feeds into a broken qualification process may be generating fewer customers than a landing page with a three percent conversion rate that feeds into an excellent follow-up sequence. Full-funnel modelling shows you the system, not just the component.
How do I improve a low funnel stage conversion rate?
The approach depends on which stage is underperforming. Low visitor to lead conversion typically indicates a traffic quality or landing page relevance problem. Low lead to MQL conversion often indicates a lead qualification or nurturing problem. Low MQL to SQL conversion suggests a mismatch between marketing and sales qualification criteria. Low SQL to close rates typically indicate a sales process, pricing, or competitive positioning problem. Diagnosis before intervention produces better results than generic optimisation tactics.

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