Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Fluid Mechanics
Open Channel Flow Calculator
Compute flow rate and velocity in open channels — rivers, ditches, and culverts — using Manning's equation. Use it for drainage design, irrigation channel sizing, and flood capacity analysis.
Fill in the required fields to see your result.
Fluid Mechanics
Hazen-Williams Flow Calculator
Estimate water flow velocity and discharge in a pressurized pipe using the empirical Hazen-Williams equation. Useful for water distribution system design and quick hydraulic calculations on municipal water mains.
Fill in the required fields to see your result.
Key differences
| Open Channel Flow Calculator | Hazen-Williams Flow Calculator | |
|---|---|---|
| Category | Fluid Mechanics | Fluid Mechanics |
| Inputs required | 5 | 3 |
| Result | Flow Rate (m³/s) | Flow Rate (m³/s) |
| What it does | Compute flow rate and velocity in open channels — rivers, ditches, and culverts — using Manning's equation. Use it for drainage design, irrigation channel sizing, and flood capacity analysis. | Estimate water flow velocity and discharge in a pressurized pipe using the empirical Hazen-Williams equation. Useful for water distribution system design and quick hydraulic calculations on municipal water mains. |