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Froude Number Calculator — result sheet
Calculate the Froude number for a flow or moving body from speed, characteristic length, and gravity.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Froude number= speed/√(gravity×characteristic length).
The Froude number compares inertial effects with gravity effects using the chosen speed and length scale.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Characteristic speed — m/s; minimum 0; maximum 1000000000
- Characteristic length — m; minimum 1.0E-6; maximum 1000000000
- Gravitational acceleration — m/s²; minimum 1.0E-6; maximum 10000
Worked example
| Input | Value |
|---|---|
| Characteristic speed | 10 |
| Characteristic length | 2 |
| Gravitational acceleration | 9.80665 |
Froude number ≈2.258.
Assumptions and limits
- The selected length is the relevant characteristic or hydraulic depth scale.
- Speed and gravity use compatible units and the result is dimensionless.
- A regime label is only a screening aid; geometry, waves, and boundary conditions still matter.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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