// Free Engineering Tool

Pipe Flow & Pressure Loss Calculator

Size pipework from flow rate and design velocity, and calculate pressure loss using the Darcy-Weisbach and Colebrook-White equations across straight pipe runs and common fittings, with recommended velocity ranges loaded automatically by fluid type.

Size pipework from flow rate and design velocity. Select a fluid to load recommended velocities and properties, then add pipe length and fittings to estimate system pressure loss using the Darcy-Weisbach method.

Fluide

Masse volumique (kg/m³)

Viscosité dynamique (mPa·s)

Débit

Unité de débit

Vitesse de calcul (m/s)

Schedule

Matériau tube / rugosité

Plage de vitesse recommandée

— select fluid —

Dimensionnement de tube

ASME B36.10M

Required ID

—

Selected Pipe

—

NPS

Internal Diameter

—

Outside Diameter

—

Actual Velocity

—

m/s

Reynolds Number

—

Flow Regime

—

Friction Factor f

—

Darcy

Enter flow rate and velocity to size pipe.

Pressure Loss Inputs

Longueur de tube (m)

Dénivelé (m, +ve = montée)

Ajouter raccords

Estimation perte de charge

Darcy-Weisbach / Colebrook-White

Pipe Friction Loss

—

Fittings Loss

—

Elevation Head

—

Total Pressure Loss

—

Head Loss

—

m fluid

Pressure Gradient

—

kPa/m

Enter pipe length and/or fittings to calculate pressure loss.

    Method: Darcy-Weisbach · Swamee-Jain friction factor · Equivalent length for fittings · Reference use only
    
  

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