What does churn really cost you?
Churn compounds quietly. Enter your MRR and monthly churn rate to watch a year of revenue leak out — and see the total damage.
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What is the Churn Calculator?
The Churn Calculator is a free SaaS churn calculator that turns a single monthly churn rate into a year-long picture of revenue churn impact. Enter your current MRR and your monthly churn percentage, and it compounds that loss across 12 months, charts the decaying revenue month by month, and totals the MRR you leak over the year. It is the fastest way to see why even a "small" churn rate quietly drains a serious amount of money — and why keeping your top-of-funnel full matters.
How to use it
- Enter your current MRR — your total monthly recurring revenue today.
- Enter your monthly churn rate as a percentage.
- Tap "See the leak" to watch a year of MRR decay and the total revenue churn impact in dollars.
Frequently asked questions
How does this churn calculator work?
Enter your current MRR and monthly churn rate. This SaaS churn calculator compounds that churn rate across 12 months, charts the decaying revenue month by month, and totals the revenue churn impact — the MRR you leak over the year if you add no new customers.
What is a good monthly churn rate for SaaS?
Healthy SMB SaaS usually runs 3–5% monthly logo churn, while strong products land below 2%. Run both numbers in this churn calculator to see how dramatically the revenue churn impact compounds over a year as the rate climbs.
Why does churn cost so much more than it looks?
Churn compounds. A 5% monthly loss is not 60% a year — it stacks on a shrinking base, and every lost customer also drags future expansion revenue with them. That is why this SaaS churn calculator projects the full 12-month leak, not a single month.
Is this churn calculator free?
Yes. It runs entirely in your browser, needs no login or signup, and never stores your numbers. It is completely free to use.
More free tools for X creators: LTV : CAC Calculator · MRR Goal Planner · all 30 free tools. Or try Slap Post to schedule and post your content automatically.