How many members do you need?

It depends on where you're starting, how much time you give it and your churn. Starting from 50 members with a goal of 500 and 7% monthly churn, you need about 58 new paying members a month to get there in a year, against the 35 a month it takes to stay there once you've arrived. The formula is new members a month = churn × (goal − today × (1 − churn)^months) ÷ (1 − (1 − churn)^months), with churn as a fraction. The planner does the arithmetic and shows the month you'd pass each quarter of the goal.

Because churn sets a ceiling. Each month you lose a share of your members, so the more you have, the more you lose. Eventually the members leaving each month equal the members joining, and growth stops. That ceiling is new members a month divided by monthly churn: 50 new members a month at 7% churn levels off at about 714 members, however long you wait. If your goal is above your ceiling, you need more signups, lower churn or a higher price; time alone won't get you there.

Each lever does something different. A higher price means fewer members for the same revenue, and fewer signups to replace each month, but a price rise usually loses some members and can slow signups. More members needs more traffic or better conversion. Lower churn raises your ceiling and makes every signup count for longer, and is often the cheapest of the three. The planner shows the single change in each that would get you to your goal by your date, so you can see which is the smallest step for your membership business.

It varies too much for one benchmark to be useful. A small, warm audience that already knows you can convert several percent of visitors into paying members; cold search traffic often converts well under 1%. Measure your own: divide last month's new paying members by last month's unique visitors. Then the traffic you need is the new members a month you need, divided by that rate. At 1 in 100, 60 new members a month takes about 6,000 visitors.

Your own, from your billing data: members who cancelled last month divided by members you had at the start of it. If you don't have it yet, low-priced subscriptions commonly lose 5% to 10% of members a month. ChartMogul's SaaS Billing Report 2025 found 41% of monthly customers still paying after a year for companies charging under $25 a month on average, which works out to about 7% a month.

No. The planner works in gross revenue, the total members pay you each month, before Stripe's fees and your platform's. If your goal is what you take home, raise it by your fees, typically a few percent, before you plan.

It assumes one price, a steady number of new members each month and steady churn. Real memberships have launches, seasonal swings, several plans and annual billing, and new members often churn faster in their first months than long-standing ones. Treat the result as the shape of the plan: the members, the pace and the traffic it takes, rather than a forecast to the month.

No. Every calculation runs in your browser, and nothing you type is sent to Memberstack or anyone else. "Copy link" puts your numbers in the page's URL so you can share them if you choose to.