Hear your
equations.

Mathestra is a graphing calculator for sound. Write , where x is time in seconds and y is where the speaker cone sits, then press play.

Open the calculator
1 ms / div
Press play, then drag f. Higher f means more wiggles per second: a higher note.

Every line is a sound.

Nothing is invented on top of the maths. Each line is a pressure wave, and lines add together exactly the way sounds add up in air.

    Start from a piece.

    Every example is plain equations you can open, read and change. Press play on any of them to listen first.

    What you get

    Typeset as you type

    Equations look like they do in a textbook, with italic variables and raised exponents, while you edit plain text.

    A keypad for maths

    Roots, powers, trig, lists and piecewise functions, one tap away on desktop and phone.

    Sliders you can play

    Any number can become a slider. Drag it while the sound runs and hear the change immediately.

    Saved and shared

    Keep your pieces in your account, or send a link that plays exactly what you made. No install.

    Your first song is one line away.

    Open the calculator