Buoyancy Force CalculatorFree online science calculator — instant results, no sign-up
Calculate displaced-fluid weight for a submerged volume.
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About the Buoyancy Force Calculator
Calculate displaced-fluid weight for a submerged volume. Idealized model using the displayed units; not an engineering safety specification. Confirm the assumptions before using measured data. Uses standard gravity 9.80665 m/s².
- Fluid density
- Enter fluid density in kg/m³. Accepted minimum: 0.
- Displaced volume
- Enter displaced volume in m³. Accepted minimum: 0.
Formula and method
Result = density * 9.80665 * volume [N]
- densityFluid density (kg/m³)
- volumeDisplaced volume (m³)
Calculate displaced-fluid weight for a submerged volume. Substitute the variables using the units defined above. Idealized model using the displayed units; not an engineering safety specification. Confirm the assumptions before using measured data. Uses standard gravity 9.80665 m/s².
Worked example
These are the calculator's starting values and the results it actually produces for them.
Inputs
- Fluid density1000 kg/m³
- Displaced volume0.01 m³
Results
- Result98.0665 N
How to use the Buoyancy Force Calculator
- 1Enter fluid density in kg/m³.
- 2Check displaced volume.
- 3Read the N result and compare the stated assumptions with your situation.
Reading your result
Calculate displaced-fluid weight for a submerged volume. The displayed quantity is N. A negative value, when the formula permits one, describes the direction of the difference—not a positive gain.
Limitations
Idealized model using the displayed units; not an engineering safety specification. Confirm the assumptions before using measured data. Uses standard gravity 9.80665 m/s². Numeric results are rounded for display; the calculation does not establish that your chosen inputs represent a realistic or permitted scenario.
Common questions
Which units does Buoyancy Force require?+
Fluid density: kg/m³; Displaced volume: m³. Do not mix incompatible units.
What assumptions matter for Buoyancy Force?+
Idealized model using the displayed units; not an engineering safety specification. Confirm the assumptions before using measured data. Uses standard gravity 9.80665 m/s².
How should I check a Buoyancy Force result?+
Use the formula above with the shown starting inputs and compare the worked example generated from the tool. Check the original measurements and terms before using the figure.
Does the calculator save my information?+
Calculations run in your browser. While signed in, inputs and results are automatically recorded in account history; saving a result creates a separate saved record.
Further reading
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Results are estimates for informational purposes and are not financial, medical or legal advice.