Converter
Pressure Drop & Head Loss Calculator
Estimate velocity, Reynolds number, head loss, and total pressure drop for water-like pipe flows using a local browser-side Darcy-Weisbach workflow.
Pipe, fluid, and fittings
Head loss breakdown
Engineering note
This MVP is aimed at quick sanity checks for water-like fluids in closed pipe runs. It is useful for civil, HVAC, mechanical, and mining workflows, but it does not replace detailed design software.
Use this tool when
These are the practical situations where this workflow usually earns its keep.
You need a quick pipe-flow or dewatering sanity check during early design or troubleshooting.
You want to understand how fittings, diameter, or elevation changes affect total pressure loss.
You need a browser-local estimate before moving the scenario into a fuller engineering model.
Civil and water transfer work
Quickly sense-check line losses before a design pack or pump selection is updated.
Mechanical and HVAC troubleshooting
Estimate whether a change in flow path or fittings is likely to explain a pressure or performance issue.
Mining dewatering review
Run a fast browser-local check on transfer lines without exposing operational details to a remote service.
Common mistakes to avoid
These are the checks that usually keep the output useful instead of misleading.
Using the tool for non-water-like fluids without validating the density and viscosity assumptions.
Treating a sanity check as the same thing as a signed design calculation.
Ignoring elevation change when the route includes a meaningful static lift.
Learn how to use this tool
Run fast Darcy-Weisbach sanity checks for water-like pipe systems without leaving the browser.
Read the guideTell us what is missing
If this flow helped only partly, leave feedback so we can understand the missing step or edge case.
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