Buoyancy Calculator


In the realm of physics and engineering, buoyancy plays a crucial role in determining the behavior of objects submerged in fluids. Whether it’s a ship floating on water or a balloon in the air, understanding buoyancy is essential for various applications. To simplify calculations related to buoyancy, we introduce a handy buoyancy calculator. This tool enables users to effortlessly determine buoyant force, volume displaced, or object density based on input parameters.

How to Use

Using the buoyancy calculator is straightforward. Simply input the required values into the corresponding fields, click the “Calculate” button, and the calculator will instantly provide the desired result.


The buoyant force acting on an object submerged in a fluid can be calculated using Archimedes’ principle, which states that the buoyant force exerted on an object is equal to the weight of the fluid displaced by the object. Mathematically, it can be expressed as:



  • Fb​ is the buoyant force (in Newtons).
  • ρ is the density of the fluid (in kg/m³).
  • g is the acceleration due to gravity (approximately 9.81m/s2).
  • V is the volume of the fluid displaced by the object (in cubic meters).

Example Solve

Let’s consider an example where we want to calculate the buoyant force acting on an object submerged in water. Suppose the density of water is 1000kg/m3 and the volume of the object submerged is 0.5m3. Using the formula mentioned above, we can calculate the buoyant force as follows:

So, the buoyant force acting on the object is 4905N.


Q: Can this calculator handle different units for input parameters?
A: No, the calculator currently only supports calculations with values given in SI units (kilograms, meters, seconds).

Q: What if the object is partially submerged?
A: In such cases, you would need to consider only the submerged volume when inputting the parameters into the calculator.

Q: Does this calculator account for irregularly shaped objects?
A: No, the calculator assumes the object to be submerged is of uniform density and shape.


The buoyancy calculator provides a convenient tool for engineers, scientists, and students to quickly perform buoyancy-related calculations. By leveraging Archimedes’ principle, users can accurately determine buoyant force, volume displaced, or object density, aiding in various design and analysis tasks.

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