Now in development — 6 calculators

Cased Completion.
Precision calculators.

A focused calculator suite for Oil & Gas completion engineers — tubular mechanics and completion tools, built to industry-standard formulas. Installable on Windows, macOS, Linux, iOS & Android.

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Trusted by completion engineers

Available on

Apple
iOS
Linux
Android
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Industry-Standard

Why Our Calculators

Engineered for the oilfield

Purpose-built tools that understand completion engineering — not generic spreadsheets.

Engineering Precision

Every calculator is built to API, ISO, and NORSOK standards. Validated against field data and industry benchmarks for reliable results.

Instant Results

Get calculation results in seconds, not hours. No spreadsheets, no manual lookups — just enter your data and get answers.

Audit-Ready Reports

Generate detailed PDF reports with full calculation methodology, inputs, and outputs. Perfect for regulatory submissions and peer review.

Install Anywhere

Available on Windows, macOS, Linux, iOS, and Android. Install once and take your calculators wherever you work.

Calculators

Featured calculators

Purpose-built calculators for completion engineers.

Area Calculator

Pipe, casing & annular area calculations

Calculate internal, external, and annular cross-sectional areas for any tubular combination — the foundation for capacity, velocity, and force calculations.

Internal, external & wall (steel) areaAnnular area for any tubular pairDrift diameter checks
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String & Casing Volume Calculator

Tubing, casing & annular volume / capacity

Calculate internal capacity and annular volume for tubing and casing strings of any length and configuration — displacement volumes for cementing, fluid changes, and circulating operations.

Internal capacity (bbl/ft, gal/ft, m³/m)Annular volume between stringsTapered / multi-section strings
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Coming Soon

String Weight Calculator

Air weight & buoyed string weight

Calculate true string weight in air and buoyed in completion or drilling fluid — accurate hook load and hanger load figures for running and landing strings safely.

Weight in air & buoyed weightBuoyancy factor by fluid densityTapered string support
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FAQ

Frequently asked questions

Everything we can answer honestly before launch — if yours isn't here, just ask.

Coming Soon

Want to know
when we launch?

Six completion engineering calculators are in development. Get in touch and we'll let you know as each one ships.

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6

Calculators in Development

Each one built to industry-standard formulas and checked against field data.

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Platforms Supported

Windows, macOS, Linux, iOS & Android — one install, everywhere.