Interactive Tools for Computational Work

Each section is a small set of tools built around one idea: read the reasoning, then change the numbers and watch the result move. Nothing here needs an account, and the pages that compute in your browser say so.

Scientific Calculators Open

Numerical methods you can paste your own data into. Interpolation is live — an article on five methods, a calculator that runs entirely in your browser, and an advanced page that computes on the server.