Here is a simple online Buoyant force calculator to calculate the Buoyancy. It is also referred to as buoyancy force. This Buoyancy force calculator is used to calculate the upward Buoyant force exerted by liquid when an object is immersed inside the liquid. The fluid displaced due to the object immersed, or in otherwords the fluid that would otherwise occupy the volume of the object is called the displaced fluid. And, the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. Enter the values for density of fluid and the displaced volume and click calculate to know the Buoyant Force (B) expressed in Newtons.