Sales funnel calculator
A sales funnel calculator projects how many leads make it to each stage of your funnel. Enter your top-of-funnel volume and the conversion rate at each stage, and it computes inquiries, opportunities, wins, the overall conversion, and projected revenue — instantly, in your browser. Nothing is uploaded.
How it works
Each stage is the previous stage multiplied by that stage's conversion rate.
| Stage | Formula | Example (1,000 leads) |
|---|---|---|
| Leads | Top of funnel | 1,000 |
| Inquiries | Leads × lead→inquiry rate (30%) | 300 |
| Opportunities | Inquiries × inquiry→opportunity rate (40%) | 120 |
| Wins | Opportunities × opportunity→win rate (25%) | 30 |
Overall conversion = wins ÷ leads = 30 ÷ 1,000 = 3%. With a $1M average deal size, projected revenue = 30 × $1M = $30M.
Steps
- Enter your leads (top-of-funnel volume).
- Enter the lead → inquiry rate.
- Enter the inquiry → opportunity rate.
- Enter the opportunity → win rate.
- Optionally add an average deal size to project revenue.
Forward vs. backward: which funnel tool?
Use this forward calculator when you already have a volume of leads and want the likely outcome and revenue. If instead you have a revenue target and need to know how many leads and opportunities it takes to hit it, use the funnel requirements calculator, which works backward. Both run entirely on your device — your numbers never leave the browser.
