Churn Rate Calculator

Step-by-Step Guide

1. 1Choose a Calculation Mode: Select Customer Churn Rate, Revenue Churn Rate, Monthly Churn, Quarterly Churn, or Annual Churn depending on how your data is measured.
2. 2Try an Example (Optional): Click a preset like SaaS Startup or Revenue Churn (MRR) to instantly load realistic sample figures.
3. 3Enter Starting and Lost Figures: Type your starting customers or revenue and how many were lost during the period. Results update instantly with a 150ms debounce.
4. 4Add Optional Inputs: Expand Optional Inputs to add new customers acquired, expansion revenue, ARPU, CAC, or an average customer lifetime override.
5. 5Review Your Churn Rate and Rating: Check the churn gauge, retention rate, health score, and performance rating (Excellent through Critical) against standard benchmarks.
6. 6Check the Visualizations: Review the retained-vs-lost pie chart and the 12-month decay projection to see how current churn compounds over time.
7. 7Compare, Export, or Share: Use Compare as A/B to evaluate two churn scenarios side by side, export as CSV or JSON, print a formatted report, or copy a shareable URL.

Key Features

• ✓5 calculation modes: Customer, Revenue, Monthly, Quarterly, Annual Churn
• ✓Net Revenue Churn with expansion revenue credit
• ✓Automatic monthly ↔ quarterly ↔ annual rate conversion
• ✓Interactive churn gauge with color-coded performance rating
• ✓Retained vs lost pie chart and 12-month decay projection chart
• ✓Health score and benchmark comparison (Excellent to Critical)
• ✓Customer Lifetime Value (LTV) and LTV:CAC ratio estimation
• ✓16 supported currencies for revenue-based modes
• ✓Real-time results with 150ms debounced updates
• ✓Compare-as-A/B scenario comparison mode
• ✓Shareable calculation URL using query parameters
• ✓Export report as CSV or JSON with full breakdown
• ✓Print-ready formatted report
• ✓Copy full report to clipboard in one click
• ✓Calculation history — save and reload up to 20 past results
• ✓No signup required — 100% free to use
• ✓All processing runs locally — no data leaves your browser

Pro Tips

• 💡Always compare churn on the same timeframe — a 4% monthly churn rate and a 10% annual churn rate look similar at a glance but represent very different retention health once annualized.
• 💡Track Net Revenue Churn alongside gross Revenue Churn — a business with strong expansion revenue from upsells can have negative net churn even while losing customers, which is a very healthy sign for SaaS businesses.
• 💡Segment churn by cohort, plan tier, or acquisition channel whenever possible — a blended churn rate can hide a serious problem in one segment that's masked by strong retention in another.
• 💡Use the LTV:CAC ratio as a sanity check before scaling acquisition spend — a ratio below 3:1 usually means unit economics need improvement before growth spend increases.
• 💡Recalculate churn every period rather than relying on a single snapshot — a trend across several months tells you far more than any single period's number.

Common Mistakes to Avoid

• ✕Don't compare a monthly churn rate directly to an annual benchmark without converting it first — 4% monthly churn compounds to nearly 39% annual churn, not 48%.
• ✕Don't ignore revenue churn in favor of customer churn alone — losing a few large accounts can hurt revenue far more than losing many small ones, even with a low customer churn percentage.
• ✕Don't treat a single good or bad month as a trend — short-term churn can be noisy, especially for smaller customer bases where a handful of cancellations swings the percentage significantly.
• ✕Don't calculate customer lifetime value using an annual churn rate in a monthly LTV formula — mixing timeframes will produce a wildly inflated or deflated lifetime estimate.
• ✕Don't ignore expansion revenue when reporting revenue churn to stakeholders — reporting only gross churn without net churn can make a healthy business look worse than it is.