PaddiM8/kalker

Health v2 · maintenance only

Adoption not part of the score

1911 stars · 85 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Kalker is a scientific calculator CLI and web app written in Rust with math-like syntax, supporting user-defined variables and functions, complex numbers, vectors, matrices, and numerical differentiation and integration. It is also available as a Rust crate and npm package, and runs on Windows, macOS, Linux, Android, and in browsers via WebAssembly.

Use cases

• calculate expressions with a math-like syntax in the terminal
• define my own variables and functions for repeated calculations
• estimate derivatives and integrals of functions
• work with complex numbers, vectors, and matrices
• convert between number bases like binary, octal, and hex
• load a file of predefined physics constants and functions
• compute sums and products over a range
• use a calculator as a Rust library in my project

When to choose

• you want a fast terminal-based scientific calculator with natural math syntax
• you need user-defined functions, piecewise functions, and variables in a calculator
• you need quick numerical derivative/integral estimation or root finding
• you want a calculator that runs cross-platform or in the browser via WebAssembly

When to avoid

• you need exact symbolic algebra or a full computer algebra system
• you need highly accurate higher-order derivatives, since estimates can be inaccurate
• you need plotting or graphing capabilities
• you need a GUI-first calculator experience

Facets

cli-tool · maturity active

cli math mathematics developer-tools windows wasm cli rust calculator scientific-calculator calculus complex-numbers rust-crate command-line linux macos android

Member repositories

For agents

markdown · JSON · MCP: product_card(name="PaddiM8/kalker")