Created By : Vaibhavi Kumari

Reviewed By : Phani Ponnapalli

Last Updated : May 15, 2023

Buoyancy Calculator is an online application that calculates the buoyancy force exerted on an object based on its fluid density and volume. Simply enter the information and press the calculate button to get the buoyancy force in seconds.

Choose a Calculation
Fluid type (optional)
Fluid density ρ:
Volume V:

What is the Force of Buoyancy?

Buoyancy, also known as the upthrust, is the force that acts in the opposite direction of gravity to keep a floating object from sinking. An object submerged in water (or any other liquid) is dragged down by its weight. The amount of liquid that would otherwise occupy the space occupied by the object - in other words, the volume of the displaced liquid - opposes the weight and has a magnitude that is directly proportional to the volume of liquid that would otherwise occupy the space occupied by the object.

Buoyant Force Formula

The formula for calculating buoyant force is B = ρ * V * g

  • Where, ρ = density of the liquid and its units are kg/m³
  • v = volume of displaced liquid and its units are m³
  • g = gravitational acceleration and its units are m/s²
  • B = buoyant force.

What is Buoyant Force and How do I Calculate it?What is Buoyant Force and How do I Calculate it?

Follow the steps described here to determine the buoyant force and whether they are as such.

  • Step 1: To begin, choose the gravitational acceleration for which you want to calculate buoyancy.
  • Step 2: After that, select the liquid in which you want to immerse the liquid.
  • Step 3: Immerse the object in the liquid to determine the volume of liquid displaced.
  • Step 4: Substitute all of these values into the Buoyancy Force equation, B = ρ * V * g.
  • Step 5: If you simplify the equation, even more, you can easily calculate the buoyancy force.

For more concepts check out to get quick answers by using this free tool.

How to use the Buoyancy Force Calculator?

The following is the procedure on how to use the buoyancy calculator. They are along the lines

  • Step 1: In the input field, enter the fluid density, volume, gravitational constant, and x for the unknown variable.
  • Step 2: To calculate buoyancy, click the "Calculate" button.
  • Step 3: Finally, the object's buoyancy force will be shown in the output field.

FAQs on Buoyant Force Calculator

1. What is meant by Buoyancy?

The upward force exerted on an object when it is partially or entirely immersed in a fluid is known as buoyancy force. It means that when an object is submerged in liquid, it will experience an upward force. The phenomenon is known as Buoyancy, and the force is known as Buoyancy or Buoyant force.

2. How much buoyancy do I need?

To keep their heads above water, most individuals only require an additional 7 to 12 pounds of buoyancy. A personal floatation device (PFD) is designed to keep you afloat until help arrives. Because a lifejacket is a personal flotation device, it's critical to get the proper one for you.

3. How do you calculate a submerged object's buoyant force?

The buoyancy force on a completely submerged item is calculated using the formula FB=ρVg, where V is the object's volume, ρ is the fluid density, and G is the gravitational acceleration.

4. How can you find out how buoyant a pontoon boat is?

The weight of freshwater per cubic foot of water is around 62 pounds. This information will be used to establish your pontoon boat's weight capacity. Simply multiply the overall capacity of your boat's pontoons by 62 pounds to get the answer.

5. A wetsuit provides how much buoyancy?

A wetsuit can have two to three pounds of buoyancy for every millimetre of thickness. Keep in mind that compressed or crushed neoprene has a lot less buoyancy than standard neoprene if you're wearing a neoprene drysuit.