MRR (monthly recurring revenue) is the predictable subscription revenue you collect each month; churn is the share of that revenue you lose to cancellations.
What is the Subscription MRR & Churn Calculator?
This free MRR and churn calculator turns your subscription numbers into the metrics that matter: monthly and annual recurring revenue, the revenue you lose to churn, and how long an average subscriber stays. It is the starting point for any subscription growth plan.
How this calculator works
Enter your active subscribers, average revenue per user per month, and your monthly churn rate. The tool multiplies subscribers by ARPU for MRR, annualises it for ARR, applies churn to find revenue lost per month, and inverts churn to estimate average subscriber lifetime and LTV.
How to read your result
The headline is your MRR. The rows show ARR, monthly revenue lost to churn, average subscriber lifetime, and subscriber LTV. Because lifetime is the inverse of churn, even a one-point churn reduction can add months of lifetime and meaningfully grow MRR over time.
Work with a Shopify expert
If churn is high or your subscription UX is clunky, that is exactly what we fix. Talk to a Shopify expert.
This free monthly recurring revenue calculator gives a fast, data-informed estimate; for wider industry context on monthly recurring revenue, see Investopedia on churn rate.
MRR = subscribers * ARPU ; Lifetime is approximately 1 / monthly churn rateFactors
Active subscribers
The base of your recurring revenue; growth here lifts MRR directly.
ARPU
Average revenue per user - raise it with upsells and plan tiers.
Churn rate
The share of subscribers lost each month; the biggest lever on lifetime.
Retention flows
Dunning, win-back, and great onboarding reduce involuntary and voluntary churn.
- Free and instant - no sign-up required.
- Built for Shopify and ecommerce stores.
- Use real numbers to plan with confidence.
- Turn the result into action with CartCoders.
Related calculators
Planning a project usually means weighing more than one number. These tools cover the decisions next to this one:
- Customer Lifetime Value Calculator — what a customer is worth
- CAC & Payback Calculator — acquisition economics
- Average Order Value Calculator — grow order value
Frequently asked questions
How is MRR calculated?
Multiply your active subscribers by your average revenue per user per month. For annual recurring revenue, multiply MRR by twelve. This calculator also estimates churn impact and lifetime.
How does churn affect lifetime value?
Average subscriber lifetime is roughly the inverse of your monthly churn rate, so lower churn means longer lifetimes and higher LTV. A small churn reduction compounds powerfully over time.
What is a healthy churn rate?
It varies by category, but many subscription stores see monthly churn in the low single digits. Reducing both voluntary cancellations and failed-payment churn is the key to durable MRR growth.