String & Casing Volume Calculator
Tubular Mechanics
String & Casing Volume Calculator computes internal capacity and annular volume for tubing, casing, and open hole across single or tapered string configurations. Get displacement and fill volumes for cementing jobs, completion fluid changes, and circulating operations without reaching for a spreadsheet. Results in bbl/ft, gal/ft, or m³/m, with running totals for the full string.
Key Features
Internal capacity (bbl/ft, gal/ft, m³/m)
Annular volume between strings
Tapered / multi-section strings
Total displacement & fill volumes
Open-hole & cased-hole support
Field & metric units
In Development
This calculator is being built next — no release date yet.
Built to industry-standard formulas
Field & metric unit support
Installable on Windows, macOS, Linux, iOS & Android