Find your biggest funnel leak and forecast revenue stage by stage. Funnel Conversion Calculator is a practical single-file tool you own outright — no subscription, no login.
• Full 5-stage funnel — Visitors, Leads, MQLs, Opportunities and Customers calculated from your own rates
• Biggest-leak finder — the stage losing the most people is named automatically so you fix the right thing first
• Revenue forecast built in — monthly and yearly revenue from your average deal value
• True CPA and ROAS — cost per customer and return on spend from your actual marketing budget
• Loss shown per stage — see exactly how many people disappear between each step
• Single HTML file — works offline, no signup, your funnel numbers stay private
Most funnels do not fail everywhere — they leak at one stage, and guessing which one wastes months. Enter your monthly visitors, the conversion rate at each stage, your average deal value and your marketing spend, and this calculator shows the full funnel with losses per stage, your overall visitor-to-customer rate, revenue forecast, CPA and ROAS. Best of all, it names your biggest leak, so your next fix goes where the money actually is.
HOW TO USE: 1. After checkout, download the ZIP and unzip it. 2. Double-click funnel-conversion-calculator.html — it opens in any modern browser, no install, no signup. 3. Enter your details, use the tool, and copy / save / export your results.
WHO IT’S FOR: Digital nomads, online sellers, freelancers, creators and solo business owners who want a practical tool they own outright — no subscription, no login, no data leaving their machine.
WHAT YOU GET: • funnel-conversion-calculator.html — the complete tool in the downloadable ZIP (works offline, yours forever) • Free lifetime updates to the file • Instant download after checkout
