// 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.

流体

密度 (kg/m³)

動粘度 (mPa·s)

流量

流量単位

設計流速 (m/s)

スケジュール

配管材質/粗さ

推奨流速範囲

— select fluid —

配管サイジング

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

配管長さ (m)

高低差 (m、正=上り)

管継手を追加

圧力損失概算

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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