Buoyant Force Calculator

Buoyant Force Calculator

Fluid Density (kg/m³): Volume of Submerged Object (m³):

What is Buoyant Force?

Buoyant force is the upward force exerted by a fluid on a submerged object, opposing the weight of the object. This force is responsible for objects floating or sinking in fluids like water. It is given by the formula:

Buoyant Force (Fᵦ) = Fluid Density (ρ) × Volume of Object (V) × Gravitational acceleration (g)

How to Calculate Buoyant Force

To calculate the buoyant force acting on an object submerged in a fluid, use the following formula:

Fᵦ = ρ × V × g
Where:

ρ = Density of the fluid (kg/m³)
V = Volume of the submerged object (m³)
g = Gravitational acceleration (9.81 m/s² on Earth)

Example Calculation

If you have an object submerged in water with a density of 1000 kg/m³ and the object’s volume is 0.5 m³, the calculation would be:

Fᵦ = 1000 × 0.5 × 9.81 = 4,905 N

Fluid	Density (kg/m³)	Buoyant Force for 1m³ Object (N)
Water	1000	9810
Seawater	1025	10057.5
Mercury	13,600	133,416
Oil	850	8,308.5