This Pressure Drop Calculator uses the Darcy-Weisbach equation to compute pressure loss due to friction in a pipe. By inputting fluid properties, flow rate, pipe dimensions, and material, it calculates flow velocity, Reynolds number, flow regime, and the resulting pressure drop.
Pressure Drop Calculator
Calculate the pressure drop due to friction in a straight circular pipe using the Darcy-Weisbach equation. The friction factor is calculated based on the flow regime.
Disclaimer: This calculator is provided for informational and estimation purposes only. While efforts have been made to ensure accuracy, the results are based on the Darcy-Weisbach equation, Swamee-Jain approximation for turbulent friction factor, and typical fluid/material data. These may not apply to all specific conditions or scenarios. The calculations do not substitute for professional engineering design, analysis, or judgment.
This calculator assumes steady, incompressible, single-phase flow in a straight circular pipe and does not account for minor losses (e.g., from fittings, valves, bends) or changes in elevation (gravitational head). Fluid properties (density, viscosity) can vary significantly with temperature and pressure, which is not dynamically accounted for here. Users are solely responsible for verifying the accuracy and applicability of the results for their intended use. No warranty, express or implied, is made regarding the accuracy, adequacy, completeness, legality, reliability, or usefulness of any information provided. The provider of this calculator shall not be held liable for any errors or omissions, or for any direct, indirect, incidental, special, exemplary, or consequential damages arising out of or in connection with the use of or reliance on this calculator or its results.
For critical applications, always consult with a qualified professional engineer. By using this calculator, you acknowledge and agree to these terms.
How this calculation works:
