Home Back

Buoyant Force Formula Calculator

Buoyant Force Formula:

\[ F_b = \rho V g \]

kg/m³
m/s²
N

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Buoyant Force Formula Calculator?

Definition: This calculator computes the buoyant force acting on an object submerged in a fluid based on Archimedes' principle.

Purpose: It helps engineers, physicists, and students determine the upward force exerted by a fluid that opposes the weight of an immersed object.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ F_b = \rho V g \]

Where:

Explanation: The buoyant force equals the weight of the fluid displaced by the object.

3. Importance of Buoyant Force Calculation

Details: Understanding buoyancy is crucial for designing ships, submarines, flotation devices, and analyzing objects in fluids.

4. Using the Calculator

Tips: Enter the fluid density, displaced volume, and gravity (default 9.81 m/s²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is Archimedes' Principle?
A: It states that the buoyant force equals the weight of the fluid displaced by the object.

Q2: What's the density of water?
A: Pure water at 4°C has a density of 1000 kg/m³. Seawater is about 1025 kg/m³.

Q3: Does this work for partially submerged objects?
A: Yes, use only the volume actually submerged below the fluid surface.

Q4: How does buoyancy affect apparent weight?
A: Apparent weight = Actual weight - Buoyant force.

Q5: What if my object floats?
A: For floating objects, buoyant force equals the object's weight.

Buoyant Force Formula Calculator© - All Rights Reserved 2025