Buoyancy: Archimedes’ upward force on a submerged object. This free calculator solves for Buoyant force, volume, density and shows every step.
Archimedes' principle: the upward buoyant force equals the weight of the fluid an object displaces. Compare that force to the object's weight — if the object's average density is less than the fluid's, it floats; if more, it sinks.
A 0.01 m³ object fully submerged in water. F_b = 1000·0.01·9.81 = 98.1 N upward.
Ship and submarine design, hot-air and helium balloons, hydrometers, life-jacket sizing, floating-platform engineering.
Buoyancy uses the formula F_b = ρ·V·g. Archimedes’ upward force on a submerged object.
Choose which variable to solve for, enter the values you know (in any supported unit), and the calculator substitutes them into F_b = ρ·V·g and shows every step of the working. It can solve for Buoyant force, volume, density.
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