Empuxo Arquimedes
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Archimedes' Buoyancy Calculator is an online tool that calculates the buoyant force exerted on an object immersed in a fluid, such as water or air. The formula used is based on Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the object. This is mathematically expressed as F = ρ·V·g, where F is the buoyant force, ρ is the fluid density, V is the object volume, and g is the acceleration due to gravity.
The calculator uses the fluid density, object volume, and acceleration due to gravity to calculate the buoyant force. It is essential to note that the fluid density can vary depending on temperature and pressure. Additionally, the object volume must be measured accurately to obtain precise results. The acceleration due to gravity is considered as 9.81 m/s², which is the standard value on Earth's surface.
The Archimedes' Buoyancy Calculator is useful in various situations, such as designing boats, submarines, and other objects that need to operate in aquatic or aerial environments. It is also an essential tool for students and professionals in physics, engineering, and related fields.
When using the calculator, it is crucial to be mindful of the units of measurement used. It is vital to ensure that the units are consistent and correct to obtain accurate results. Additionally, it is essential to remember that Archimedes' formula is a simplification and does not account for other factors that can influence the buoyant force, such as fluid viscosity and object shape.
Frequently asked questions
What is Archimedes' principle?
Archimedes' principle states that the buoyant force exerted on an object immersed in a fluid is equal to the weight of the fluid displaced by the object.
What are the units of measurement used in the calculator?
The units of measurement used in the calculator are: fluid density (kg/m³), object volume (m³), and acceleration due to gravity (m/s²).
Does the calculator account for fluid viscosity?
No, the calculator does not account for fluid viscosity. Archimedes' formula is a simplification and does not consider this factor.
Can I use the calculator for objects of any shape?
The calculator assumes that the object has a regular shape and that the volume can be measured accurately. For objects with irregular shapes, more complex methods are required to calculate the volume.
Is the calculator accurate for any fluid?
The calculator is accurate for fluids with constant density, such as water and air. However, for fluids with variable density, such as gases and compressible liquids, more complex equations are required.