RatCalc — powered by RiX

Exact rational math

Calculator

RiX browser session Calculator input · Enter runs · Shift+↑ opens script input

> RatCalc command entry

Script mode: Enter adds a line; ↑ and ↓ move through the text; Ctrl/⌘ + Enter runs the script; Shift+↓ returns to command mode.

Reactive dashboard0 reactive values

Every $$ value appears here. Declare an editable value directly with $$x := .Slider(initial, ...), .Input, .Choice, .Toggle, or .Range; derived values remain read-only.

Controls

Live values

No reactive values yet.

Load a small exact model with two controlled inputs and one derived value.

RatCalc help

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Calculator settings

Input, script, and number notation for this session.

Input base for # numerals Output format profile

.[12],b,.. shows a 12-place decimal, binary, and a mixed fraction. Use cf, sci[10], or sci-period[10] for specialized views.

Automatically separate top-level script lines Remember in this browser

Exact interval explorer

Number line and provenance

The values and edits are exact. Number-line coordinates are approximate browser pixels.

Selected interval Start End Step 1 /