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Darcy Weisbach Calculator
Pressure drop in a pipe using the Darcy-Weisbach equation.
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Pressure drop in a pipe using the Darcy-Weisbach equation.
Darcy Weisbach Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: dP = f (L/D) rho v2 / 2.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Darcy Quick Guide
Typical values for reference.
| f | Length m | Diameter m | Drop |
|---|---|---|---|
| 0.02 | 100 | 0.05 | 80.00 kPa |
| 0.02 | 50 | 0.1 | 11.25 kPa |
| 0.03 | 200 | 0.025 | 1,080.00 kPa |
| 0.015 | 500 | 0.2 | 63.75 kPa |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Darcy Weisbach Calculator FAQ
Answers to common questions about this calculator.
An equation for pressure loss from friction in a pipe.
From the Moody chart or Colebrook equation.
Pressure drop expressed as metres of fluid.
It works with caution at low speeds.