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Both calculators run independently β change the inputs on either side to compare results.
Civil
Pipe Flow Rate Calculator
Determine the flow rate of water through a pipe using the Hazen-Williams equation. Use this when designing or analyzing water distribution systems, irrigation lines, or municipal supply networks.
Fill in the required fields to see your result.
Civil
Pipe Flow Capacity Calculator
Determine water flow rate (in GPM) through circular pipes using Manning's equation. Used by civil engineers and plumbers to size pipes for gravity-fed drainage, sewer, and stormwater systems.
Fill in the required fields to see your result.
Key differences
| Pipe Flow Rate Calculator | Pipe Flow Capacity Calculator | |
|---|---|---|
| Category | Civil | Civil |
| Inputs required | 4 | 4 |
| Result | Flow Rate (gpm) | Flow Capacity (gallons per minute) |
| What it does | Determine the flow rate of water through a pipe using the Hazen-Williams equation. Use this when designing or analyzing water distribution systems, irrigation lines, or municipal supply networks. | Determine water flow rate (in GPM) through circular pipes using Manning's equation. Used by civil engineers and plumbers to size pipes for gravity-fed drainage, sewer, and stormwater systems. |