SaaS Revenue Potential Calculator
A back-of-the-envelope model, done honestly: reachable market × win rate, spread over 24 months, minus churn. Every assumption is on the page and editable. Runs entirely in your browser.
Winnable customers = market × win rate. Acquisition is linear: that total is spread evenly over 24 months (month 1 you close 1/24th of it). Churn compounds monthly on the existing base: customers(m) = customers(m−1) × (1 − churn) + monthly adds. MRR = customers × ACV ÷ 12. Break-even is the first month MRR covers your monthly cost.
Real growth is not linear — it's slower at the start and lumpier throughout. Treat these as ceilings under your own assumptions, not forecasts.
| Milestone | Customers | MRR | ARR | vs monthly cost |
|---|
If the −50% cell still clears your cost line, the plan survives being wrong. If only the +50% cells work, the plan is hope.
About this tool
Most revenue projections die from optimism stacking: a generous TAM, a best-case win rate, and zero churn multiply into a number nobody should sign off on. This calculator makes each assumption explicit and small — reachable market means companies you can actually get in front of, win rate means signed contracts divided by everyone you contacted (for cold outbound, 0.5–2% is normal), and churn compounds every month whether you model it or not. The sensitivity table is the honest part: it shows what happens when you're 50% wrong in either direction, because you will be.
All math runs locally in your browser. Your market size, pricing, costs, and projections are never uploaded, stored, or logged — there is no server behind this page.