Calculators

Numbat – high precision scientific calculator

Numbat is a statically typed programming language for scientific computations with first class support for physical dimensions and units.

It is a continuation of insect.

This is free and open source software.

Key Features

  • Physical dimensions as types – static type system where physical dimensions like Length and Time act as types.
  • First-class physical units – focused on computations with units. Units are therefore treated as first-class citizens.
  • Comprehensive standard library – comes with a large number of physical dimensions and units (SI, US Customary, Imperial, Nautical, Astronomical, Atomic, Nuclear, …).
  • Strict syntax – parser never tries to be “smart” on syntactically incorrect input. This means you will either get a (descriptive) error message, or you can trust the result of your calculation.
  • Excellent error messages – aims to provide descriptive and helpful error messages.
  • Interactive terminal – interactive use-case with small “one off” computations.
  • Modular and customizable
  • Assertions – provides an assert_eq procedure that allows you to check for exact equality

Website: numbat.dev
Support: GitHub code repository
Developer: David Peter
License: MIT License or Apache License 2.0

Numbat in action

Numbat is written in Rust. Learn Rust with our recommended free books and free tutorials


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Read our verdict in the software roundup.


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