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Casing Volume Calculator

Calculate casing material volume and internal capacity from outer and inner diameters. Essential for ordering materials and grout planning.

Last updated 5 March 2026

About this tool

Calculate the volume of casing material (wall volume) and internal capacity from outer diameter, inner diameter, and length. Useful for material ordering and understanding annulus dimensions.

Revision history

5 March 2026: Initial release with casing material volume, internal volume, and wall thickness outputs.

Disclaimer

This tool is provided for educational and general information purposes only. It is not a substitute for professional engineering advice, design or verification.

Diggy and its contributors are not licensed engineering consultants and no results generated by this tool should be used directly for construction, design or safety-critical decisions.

All values and outputs are based on published empirical correlations and should be independently checked and confirmed by a qualified geotechnical engineer before use.

By using this tool, you accept full responsibility for how you interpret and apply the information provided.

Spotted an error? Let us know.

Outer diameter (mm)

Inner diameter (mm)

Casing length (m)

Common casing sizes (OD × ID)

HW: 114.3 × 101.6 mm

NW: 88.9 × 76.2 mm

PW: 139.7 × 122.2 mm

6" steel: 168.3 × 154.1 mm

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