Churn Rate Calculator
Calculate churn rate from starting customers and churned customers so you can measure how much of your customer base you are losing during a period.
Frame this page for SaaS, subscription, and app teams that need a clean customer-churn percentage plus practical context around retention health.
Quick comparison
Review this metric alongside related calculators for a clearer picture of traffic cost, efficiency, profitability, or conversion performance.
Churn Rate Calculator
Enter your values below to calculate the result instantly.
Results
Example values are prefilled so you can see how the calculator works.
Quick read
The main number to watch here is churn rate. A higher churn rate usually means recurring revenue is under more pressure and future growth has to work harder just to stand still.
Learn the metric behind the calculator
If you want more context, these guides explain how the metric works, how to interpret it, and how to compare it with related performance measures.
What is a good LTV:CAC ratio?
↗Learn how to judge LTV:CAC ratio in context, why a bigger ratio is not always enough, and how payback timing changes what healthy really looks like.
Churn vs retention explained
↗Learn the difference between churn and retention, how the two metrics work together, and why recurring-revenue businesses need both views at the same time.
How to calculate MRR and ARR
↗Learn how to calculate MRR and ARR, what should count as recurring revenue, and how to use both metrics in SaaS and subscription planning.
Formula
Churn Rate = (Churned Customers / Starting Customers) × 100
Churn rate measures what share of the customer base you lost during a defined period. It is one of the most important recurring-revenue metrics because even strong acquisition can be offset quickly if churn is too high.
How to use this calculator
- 1Enter the number of customers you started the period with.
- 2Enter the number of those customers who churned during that same period.
- 3The calculator divides churned customers by starting customers and converts the result into a percentage.
What this metric tells you
A higher churn rate usually means recurring revenue is under more pressure and future growth has to work harder just to stand still.
Churn should be read together with retention, acquisition efficiency, and expansion or pricing trends to understand the full picture.
A low churn rate can still hide segment problems if one customer cohort is healthy while another is deteriorating.
Common use cases
- Tracking monthly or annual customer churn.
- Checking whether onboarding, support, or pricing changes affected retention.
- Pressure-testing whether current acquisition spend can support long-term growth if churn stays where it is.
Related search topics
People looking for this tool often also search for closely related terms, formulas, and metric definitions.
Worked example
Example: calculating churn rate from starting and lost customers
If you start the month with 1,200 customers and lose 54 of them, churn rate is 4.50%. That means four and a half percent of the starting customer base churned during the period.
FAQ
What is churn rate?+
Churn rate is the percentage of customers who leave during a specific period. It is a direct read on customer loss, not just slower growth.
Should churn be measured monthly or annually?+
Either can work, but monthly churn is common for subscription businesses because it makes trend changes easier to spot early.
Why can churn look healthy while growth still feels weak?+
Even moderate churn can create heavy acquisition pressure if new-customer growth is slowing or CAC is rising at the same time.
What should I pair with churn?+
Review churn with retention, MRR, ARR, CAC, and customer lifetime value so you can see both the loss rate and its economic effect.
Important note
This calculator is provided for general informational and planning purposes only. Results are based on the values you enter and on simplified formulas.
Real-world performance can vary because of attribution settings, platform reporting differences, margins, refunds, conversion quality, channel mix, and other business factors.
Use calculator outputs as a quick decision aid, not as financial, legal, tax, accounting, or investment advice.
Related calculators
Explore closely related tools to compare traffic cost, efficiency, profitability, and conversion performance more clearly.
Retention Rate Calculator
↗Calculate retention rate from starting customers and retained customers so you can measure how much of your customer base stayed with you during the period.
Monthly Recurring Revenue Calculator
↗Calculate MRR from active accounts and average monthly revenue per account so you can quantify recurring revenue on a clean monthly basis.
Customer Lifetime Value Calculator
↗Calculate customer lifetime value from ARPU, gross margin, and customer lifespan so you can estimate how much value one customer generates over time.
LTV:CAC Calculator
↗Calculate the LTV:CAC ratio from customer lifetime value and customer acquisition cost to check whether your growth model looks sustainable.