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Pipe Volume Calculator

Calculate internal volume, flow rate capacity, fill time, fluid weight, and pipe wall weight — for single pipes or multi-segment systems, with standard pipe size lookup.

V = π × (d/2)² × L · Supports circular, rectangular, and elliptical cross-sections

Pipe Dimensions

Choose cross-section shape, enter dimensions and length

Cross-Section Shape

Unit System

Outer Diameter (in)

Wall Thickness (in)

0 = thin-walled / ID only

Inner Diameter (in) — OR —

Pipe Length (ft)

Fill Level (%)

For partially filled pipes (100 = full)

Fluid Type

Custom Fluid Density (kg/m³)

Flow Rate (optional)

Flow Rate Unit

Pipe Material

Custom Material Density (kg/m³)

Standard Pipe Size Lookup

Quick Scenarios

Volume

Internal Volume

—

Gallons (US)—

Litres—

US Barrels—

ft³—

m³—

Fluid

Fluid weight—

Fluid weight (lbs)—

Pipe

Inner diameter—

Cross-sect. area—

Pipe wall weight—

Flow (if entered)

Flow velocity—

Fill time—

Pipe Volume Calculator

Pipe Dimensions

Pipe Cross-Section & Fill Visual

Volume & Flow Results

Multi-Segment Pipe System

Step-by-Step Calculation