Calculadora de Taxa de Atrito (Turnover)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
atrito% = demissões / média_funcionários × 100
About this calculator
The Friction Rate (Turnover) Calculator is a practical tool to measure the percentage of employee turnover in a company. It calculates the attrition rate based on the number of dismissals in a period and the average number of active employees during that same period. The result is expressed as a percentage, indicating the proportion of employees who left the organization.
The calculation is simple: divide the total number of dismissals in the period by the average number of employees (sum of employees at the beginning and end of the period, divided by two) and multiply by 100. For example, if a company had 5 dismissals in a month and an average of 100 employees, the turnover rate is 5%. This metric is widely used in human resources to assess team stability.
Use this calculator to analyze monthly, quarterly, or annual periods. It is useful for identifying trends, such as increased turnover after organizational changes, and for comparing with industry benchmarks. Companies with high turnover rates may face higher recruitment and training costs, as well as loss of productivity.
Cautions: ensure you include only voluntary and involuntary dismissals, excluding internal transfers. The average number of employees should reflect the actual headcount on payroll. Periods with many hires or seasonality can distort the result, so it is recommended to calculate the rate over several months for a more accurate view.
Frequently asked questions
What does a high turnover rate mean?
A high rate indicates many employees are leaving, which may signal issues like dissatisfaction, poor management, or bad working conditions. It also increases recruitment and training costs.
How to calculate the average number of employees?
Add the number of employees at the start and end of the period and divide by two. For example, if you started with 100 and ended with 90, the average is 95.
Should I include temporary workers in the calculation?
It depends on the goal. For overall turnover analysis, include all contract types. To measure only permanent staff, exclude temporaries and interns.
What is considered a healthy turnover rate?
It varies by industry, but generally 5% to 10% per year is acceptable. Rates above 20% annually warrant investigation.
Can the calculator be used for any period?
Yes, you can use months, quarters, or years. Just keep consistency: use the same period for dismissals and average employees.