Contatos Possíveis (Dunbar)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
Dunbar
About this calculator
The Dunbar number calculator is a useful tool to estimate the number of friends and contacts a person can maintain in their life. The Dunbar formula is a mathematical estimate based on psychology and sociology studies.
The Dunbar formula is simple: N = log(n + 1) / log(3), where N is the number of possible contacts and n is the number of hours a person spends interacting with others per week.
This calculator is useful to understand limits and prioritize relationships. It's important to remember that the number of possible contacts is not an indicator of relationship quality, but rather the amount of people a person can know and interact with.
It's essential to use this calculator with care and consider real cases, such as people with mental illnesses that may have more difficulty maintaining relationships or people with many responsibilities that don't have time to interact with others.
Frequently asked questions
What is the Dunbar formula?
The Dunbar formula is N = log(n + 1) / log(3), where N is the number of possible contacts and n is the number of hours a person spends interacting with others per week.
When should I use this calculator?
Use this calculator to understand limits and prioritize relationships, especially when you are planning a network of contacts for an event or project.
What does the calculator result mean?
The calculator result is the number of possible contacts you can maintain in your life. Remember that the number is not an indicator of relationship quality, but rather the amount of people you can know and interact with.
Can I use this calculator to calculate the number of friends?
Yes, you can use this calculator to calculate the number of friends, but also remember that the number of friends is not the only factor that defines relationship quality.
What is the limitation of this calculator?
The limitation of this calculator is that it does not take into account factors such as mental illnesses, responsibilities, and lifestyle, which can influence the ability to maintain relationships.