Math calculators

Clear, practical math without the busywork. Every tool is free, fast and private.

利用可能

計算機を選択

5 tools available now.

最も一般的なパーセント問題を1ステップで解きます。

一般的な長さ、重さ、体積、温度の単位をすぐに換算します。

Plot up to three functions, inspect their domain and estimate visible roots without sending formulas to a server.

Solve linear and quadratic equations, including repeated, complex, identity and no-solution cases.

Create and share a private calculator from a formula using variables a, b and c.

これらのツールの利用

Each math tool shows the relationship behind the result so it can be checked and reused.

Values are calculated locally with JavaScript and formatted only after the underlying calculation is complete.