Buoyancy Calculator
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Buoyancy Calculator
Calculate buoyant force and whether an object floats or sinks. Instant result with formula, worked example and step-by-step solution. No signup required.
Browse all calculators →Buoyancy (upthrust) is the upward force exerted by a fluid on a submerged or partially submerged object. Archimedes' principle states: buoyant force = weight of fluid displaced by the object.
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Did You Know?
Archimedes supposedly cried "Eureka!" when he discovered this principle while stepping into a bath and noticing the water overflow — allowing him to test whether the king's crown was pure gold.
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