Buoyancy Calculator
Archimedes' Principle
Calculate buoyant force, determine if objects float or sink, and find the percentage submerged using Archimedes' principle.
Object & Fluid Parameters
m³
Volume of the object
kg
Mass of the object
Archimedes' Principle
F_buoyant = ρ × V × g
where: ρ = fluid density, V = volume, g = 9.81 m/s²
Note
An object floats if its average density is less than the fluid density. The buoyant force equals the weight of displaced fluid.
About Buoyancy
Archimedes' principle states that the buoyant force on an object is equal to the weight of the fluid it displaces.
- Buoyant force = weight of displaced fluid
- Objects float if density < fluid density
- Acts upward through center of buoyancy
Applications
- Ship and boat design
- Submarine ballast systems
- Hot air balloon calculations
- Diving and scuba equipment
- Hydrometer measurements
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