Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Monthly recurring revenue
$9,280
Annual run rate
$111,360
Lifetime value per member
$500.00
Average tenure (months)
20.0
Steady-state member count
900
Net members added this month
29
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter current members.
- 2Enter monthly price ($).
- 3Enter new members per month.
- 4Enter monthly churn (%).
- 5Enter cost to serve per member ($).
- 6Read your monthly recurring revenue on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
A community with 5% monthly churn caps out at 20 months of average tenure no matter how many people you add. Steady state, not signups, tells you the size of the business.
Worked example
Using the values the calculator loads with:
Inputs
- Current members: 320
- Monthly price: 29 $
- New members per month: 45
- Monthly churn: 5 %
- Cost to serve per member: 4 $
Results
- Monthly recurring revenue: $9,280.00
- Annual run rate: $111,360.00
- Lifetime value per member: $500.00
- Average tenure (months): 20
- Steady-state member count: 900
- Net members added this month: 29
What each field means
Inputs
- Current members
- The current members used in the calculation. Starts at 320 so you have a working example on load.
- Monthly price ($)
- The monthly price used in the calculation, measured in $. Starts at 29 $ so you have a working example on load.
- New members per month
- The new members per month used in the calculation. Starts at 45 so you have a working example on load.
- Monthly churn (%)
- The monthly churn used in the calculation, measured in %. Starts at 5 % so you have a working example on load. Accepted range: 0.1–50 %.
- Cost to serve per member ($)
- The cost to serve per member used in the calculation, measured in $. Starts at 4 $ so you have a working example on load.
Results
- Monthly recurring revenue
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annual run rate
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Lifetime value per member
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Average tenure (months)
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Steady-state member count
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net members added this month
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the membership & community revenue calculator work?
A community with 5% monthly churn caps out at 20 months of average tenure no matter how many people you add. Steady state, not signups, tells you the size of the business. The underlying maths is: Steady-state members = New members per month ÷ Monthly churn rate.
What do I need to enter?
5 values: current members, monthly price, new members per month, monthly churn, and cost to serve per member. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the monthly recurring revenue result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Membership Revenue Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/membership-revenue
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/membership-revenue" target="_blank" rel="noopener">Membership Revenue Calculator — RevenueLab</a> (2026).</p>
Source: [Membership Revenue Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/membership-revenue) (2026).