Sales Funnel Calculator
Model qualified leads, proposals, expected wins, and sales value from sequential conversion rates. Test your sales funnel assumptions without a spreadsheet.
02 / YOUR RESULT
Start with your numbers.
The example calculates when this page loads.
How the calculation works
Expected wins = inquiries × qualification rate × proposal rate × win rate. Modeled sales value = expected wins × average project value.
A calculation you can check.
With 100 inquiries, a 40% qualification rate, a 50% proposal rate, and a 30% win rate, the model gives 40 qualified opportunities, 20 proposals, and six wins. At $2,500 each, that is $15,000 in sales value.
When to use this calculator
Use this sales funnel calculator to connect activity to a revenue scenario. Use conversion rates for the same lead cohort and a comparable sales process. Each rate applies to the output of the previous stage. Compare scenarios by changing one assumption at a time: a qualification improvement and a larger project value can create different delivery demands even when their revenue effect looks similar.
Assumptions and limits
Expected-value wins may be fractional, but actual projects are not. The model does not predict which opportunity will close or when payment will arrive. Avoid mixing new inquiries this month with wins from an older cohort. Count project value once and account for cancellations, discounts, and capacity separately before budgeting against the result.
Before you use the result.
Why are the conversion rates multiplied?
A lead must pass every stage to become a win. Sequential stage probabilities multiply; adding the percentages would overstate the outcome.
Is the result profit?
No. It is modeled sales value before delivery costs, overhead, and collection timing.
Can I use this for ecommerce?
You can model a three-stage journey, but make sure each stage is defined consistently and use average order value instead of project value.
Calculator inputs are processed on your device and are not saved by this tool or sent to MNMVL. The optional CSV download includes your current inputs and result. These are simplified business planning models, not accounting, tax, or investment advice.