Buoyancy Calculator
Calculate buoyant force, submerged volume, or fluid density using Archimedes' principle.
Gravitational acceleration: g = 9.80665 m/s²
Fluid density
How to Use the Buoyancy Calculator
- Select the quantity you want to find: buoyant force, submerged volume, or fluid density.
- Enter the known values in the corresponding input fields.
- Click Calculate to get the result instantly.
- Use the reference table below to look up common fluid densities.
クイックリファレンス
| 変換元 | 変換先 |
|---|---|
| Water (fresh) | 1000 kg/m³ |
| Seawater | 1025 kg/m³ |
| Oil (typical) | 900 kg/m³ |
| Mercury | 13600 kg/m³ |
| Air (at sea level) | 1.225 kg/m³ |
| Glycerin | 1260 kg/m³ |
使用例
- •Calculating the lift force on a submerged object in engineering design.
- •Determining how much of an object will be submerged when placed in a fluid.
- •Verifying whether a vessel or container will float in a given liquid.
- •Physics homework and exam problems involving Archimedes' principle.
計算式
F = ρ × V × g, where F is buoyant force (N), ρ is fluid density (kg/m³), V is submerged volume (m³), g = 9.80665 m/s².
よくある質問
What is Archimedes' principle?
Archimedes' principle states that the buoyant force on a submerged object equals the weight of the fluid it displaces. F = ρ × V × g, where ρ is the fluid density, V is the submerged volume, and g is gravitational acceleration.
When does an object float?
An object floats when the buoyant force equals or exceeds its weight. This happens when the average density of the object is less than or equal to the density of the surrounding fluid.
Why is seawater denser than fresh water?
Seawater contains dissolved salts and minerals, raising its density to about 1025 kg/m³ compared to fresh water at 1000 kg/m³. This means objects experience a slightly greater buoyant force in seawater.