Offline-first engineering calculator app

Create reusable engineering calculators with MicroCAS

MicroCAS is built for engineers, technicians, consultants, estimators, students, researchers, and other advanced users who want more than a fixed calculator app. Create your own calculators from formulas, use built-in technical tools, keep local references close by, and reopen saved results whenever real work calls for them.

Custom calculators

Built-in tools

Local references

One-time purchase

MicroCAS formula builder for creating a reusable calculator from an engineering formula.

MicroCAS calculator screen with saved inputs, results, and reusable formula details.

Coming soon

Coming soon

Some features may vary by platform.

See expanded platform features

Why MicroCAS

A self-contained calculator app for real technical work

Instead of bouncing between fixed calculator apps, browser snippets, notes, and spreadsheets, MicroCAS keeps custom formulas, built-in technical tools, local reference data, and saved results together in one private app. The result is a more durable setup that stays useful in the office, on site, in transit, in secure environments, or anywhere internet access is limited.

Calculator freedom

Unlimited

Create as many custom calculators as your workflows need instead of waiting for built-in tools to match your use case.

Built-in catalog

Ready

Open built-in engineering, math, geometry, science, and quantity tools next to your own saved calculators.

Local continuity

Saved

Keep favorites, history, saved calculations, materials, and preferences on the device so recurring work stays close at hand.

Data safety

Private

Core calculations and saved app data stay local, with backup and restore available when you decide to move them.

Built for real workflows

Reusable calculators and built-in technical tools

MicroCAS combines built-in engineering tools with your own saved calculators, so recurring work becomes a reusable asset instead of disposable scratchpad effort.

Formula builder

Units and labels

Saved locally

Custom calculators

Create simple helpers or more advanced multi-variable calculators for recurring engineering work. Add names, descriptions, labels, units, and calculation context, then reopen the same calculator whenever the task comes back.

Create unlimited calculators from your own formulas.
Save, reopen, and favorite the ones you use most often.
Use one smart input for formulas, equations, conversions, and technical queries.

Built-in catalog

Searchable

Math and geometry

Technical tool catalog

Browse built-in engineering, math, geometry, science, and quantity tools next to local reference data and saved materials, so you can move quickly without leaving the app.

Search by tool name, alias, or discipline.
Open ready calculators across Geometry, Physics, Chemical, Biological, Construction, IT Infrastructure, Financial, and other industrial profiles.
Keep materials, favorites, and recent tools locally available for recurring work.

Core capabilities

A local calculator app shaped around technical work

Everyday speed

Smart technical input

Use one input flow for formulas, equations, conversions, and practical technical questions without bouncing between separate utilities.

Built-in catalog

Hundreds of ready calculators

Access ready calculators across Geometry, Physics, Chemical, Biological, Construction, IT Infrastructure, Financial, and other industrial profiles next to your own saved tools.

Reference workflows

Materials and local data

Browse local reference data for materials, substances, and elements, then add custom materials for internal or project-specific workflows.

Saved continuity

Favorites, history, and saved calculators

Keep favorite tools, recent results, saved calculators, and app preferences locally so repeat work stays easy to reopen.

Offline readiness

Works without a live connection

Core calculations, saved formulas, references, and results stay available without depending on internet access or a cloud session.

Ownership

Control without subscription pressure

MicroCAS follows a one-time purchase model and keeps core data on your device unless you explicitly decide to back it up or move it.

Who it is for

Made for technical users who need reliable local calculation tools

MicroCAS fits engineers, technicians, consultants, estimators, students, researchers, and advanced technical users who need practical calculators for recurring work, field situations, secure environments, or offline travel.

Engineers

Technicians

Consultants

Estimators

Students

Researchers

Everyone

Privacy and control

Local-first by default

No account is required for core usage. Core calculations, saved app data, references, and preferences are designed to stay on the device, with backup and restore available when you choose to move them.

MicroCAS is an assistive professional tool. Results, formulas, and reference data should always be reviewed and independently verified before being used in critical engineering, safety, regulatory, legal, medical, financial, or contractual decisions.