Churn Rate Calculator

Calculate your customer churn rate and retention rate to monitor customer loyalty, service quality, and business health.

Input Details

Customers at Start of Period

Lost Customers during Period

Results

Customer Churn Summary

Customer Churn Rate

5.0%

You lost 5.0% of your customer base during the period, retaining 95.0%.

Beginning Customer Count500

Lost Customers in Period25

Customer Retention Rate95.0%

The Formula

Churn Rate Math:

Churn Rate = (Lost Customers ÷ Starting Customers) × 100
Retention Rate = 100% - Churn Rate

Example Calculation

If your SaaS started the month with 1,200 active subscribers and 60 unsubscribed:
Churn Rate: (60 / 1,200) × 100 = 5.0% | Retention Rate: 100% - 5.0% = 95.0%

How to Use This Calculator

Enter the customer count at the **Start of the Period** (e.g. beginning of month).
Enter the total **Lost Customers** during the same period.
Review the resulting Churn Rate and Retention Rate.

When This Calculator is Useful

Use this calculator when **performing quarterly business reviews**, auditing customer loyalty, or tracking subscription platform growth health.

Disclaimer Note

All results are estimates based on standard business formulas and rates. Actual project costs, ROI, and rates may vary based on market conditions, specific requirements, and contract agreements.

Frequently Asked Questions

Customer churn rate is the percentage of customers who cancel their subscription, stop buying, or end their contract during a specific period. Minimizing churn is critical because retaining current customers is much cheaper than acquiring new ones.

Divide the number of customers lost during a specific timeframe by the number of customers you had at the start of that timeframe, then multiply by 100. Formula: Churn Rate (%) = (Lost Customers ÷ Start Customers) × 100.

For established business-to-business (B2B) SaaS platforms, a healthy monthly churn rate is between 1% and 2% (around 12-24% annually). Business-to-consumer (B2C) subscription services typically face higher churn rates of 3% to 7% per month.

Customer churn measures the total count of accounts lost. Revenue churn measures the total amount of recurring revenue (MRR) lost. It is possible to have low customer churn but high revenue churn if you lose high-tier enterprise clients, or "negative revenue churn" if expansions exceed losses.