Equivalent Length Calculation for Pipe Fittings
Calculates the equivalent length of pipe fittings and the resulting Darcy‑Weisbach pressure drop for a given flow condition.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Cross‑sectional area (A)
- m²
- m²
Average fluid velocity (V)
- m·s⁻¹
- m·s⁻¹
Reynolds number (Re)
- -
- -
Darcy friction factor (f)
- -
- -
Equivalent length of a single fitting (L_eq)
- m
- m
Total equivalent pipe length (L_eq_total)
- m
- m
Darcy‑Weisbach pressure drop (DeltaP)
- Pa
- Pa
Need this calculation offline?
Download Offline Excel CalculationContext & Assumptions
The equivalent‑length method lets engineers treat the head loss of fittings as an added straight‑pipe length, simplifying pressure‑drop calculations in piping networks. This calculator follows the standard procedure of converting flow data to SI units, determining hydraulic parameters, and applying the Colebrook‑White friction factor for turbulent flow.
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