Calculadora de Taxa de Churn
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
churn% = clientes_perdidos / clientes_início × 100
About this calculator
The Churn Rate Calculator helps businesses measure the percentage of customers who canceled or stopped using their services over a specific period. Churn is a critical metric for subscription-based businesses like SaaS, gyms, or phone plans. With this tool, you enter the number of customers at the start of the period and how many were lost by the end, instantly obtaining the percentage rate.
The calculation is simple: divide the number of lost customers by the total customers at the start of the period and multiply by 100. For example, if a company started the month with 500 customers and lost 25, the churn rate is 5%. This value indicates how fast the base is shrinking, allowing corrective actions before the problem worsens.
Use this calculator monthly, quarterly, or annually to monitor your business health. It is especially useful for startups, subscription companies, and any recurring revenue model. Tracking churn helps identify seasonality, campaign impact, or service issues. Combine with metrics like LTV and CAC for a complete financial view.
Caution: the formula assumes all lost customers left voluntarily. Exclude cancellations due to fraud or forced inactivity. Also, consider gross churn versus net churn (which includes new customers in the period). For deeper analysis, segment by plan or acquisition channel. A high churn rate may mask even higher growth, so always analyze the context.
Frequently asked questions
What is considered a high churn rate?
It depends on the industry. For B2B SaaS, annual churn above 10% is high. For B2C, it can be 5-7% per month. Compare with segment benchmarks.
How to reduce churn rate?
Improve onboarding, offer proactive support, collect regular feedback, and create loyalty programs. Identify cancellation reasons with exit surveys.
Should I calculate gross or net churn?
Gross churn considers only losses. Net churn subtracts new customers. Use gross for pure retention measurement and net for actual base growth.
Can I calculate churn for inactive customers?
Yes, define inactivity as a loss. But specify the criterion (e.g., no login for 90 days) for consistency. This is common in apps and digital platforms.
Does the calculator work for any period?
Yes, as long as you have start and end data. The formula is the same for days, months, or years. Just ensure the period is consistent.