Calculators
Subscription Revenue Forecast Calculator
Forecast subscribers, MRR and cumulative revenue month by month from new sign-ups, churn and price.
- Runs in your browser
- Nothing uploaded
The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
Everything you enter stays on your own machine. Nothing is sent to us or to anyone else, which you can confirm in your browser network tab.
What people use it for
- Forecasting revenue for a subscription box or membership
- Setting acquisition targets
- Showing the effect of lower churn on revenue
- Building a simple subscription business plan
About this tool
What the Subscription Revenue Forecast Calculator does
Subscription revenue grows when new subscribers outpace cancellations. This calculator models both every month, multiplies by your price, and reports the subscriber count, monthly recurring revenue and total revenue collected over the forecast.
Formula
- Subscribers next month = subscribers × (1 − churn) + new subscribers
- MRR = subscribers × monthly price
- Ceiling = new subscribers per month ÷ monthly churn
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| Current subscribers | 1,000 |
| New subscribers per month | 150 |
| Monthly churn | 3% |
| Monthly price | $29.00 |
| Months to forecast | 24 months |
| Result | Value |
|---|---|
| MRR at the end | $89,156 |
| Subscribers at the end | 3,074 |
| Total revenue over the period | $1,534,969 |
| Long-run subscriber ceiling | 5,000 |
How to read the result
At constant sign-ups, every subscription business approaches a ceiling where churn cancels growth. Reducing churn raises that ceiling as much as extra marketing does.
If you offer annual plans, convert them to a monthly price and remember that annual subscribers churn only at renewal.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
Project subscribers month by month by adding new sign-ups and removing churned subscribers, then multiply by the monthly price.
Consumer subscriptions often see several percent a month; business software is usually much lower.
Because churn is a percentage of a growing base. Eventually churned subscribers equal new subscribers.
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