Calque
A reactive notepad calculator. Type math expressions and see results instantly — supports variables, functions, and unit conversions.
About Calque
Type a math expression and the answer appears before you finish the sentence. Calque works like a notepad, but every line is live — write tax = price * 0.08 on one line, then reference tax anywhere below it and the values cascade instantly. It handles unit conversions, custom functions, and multi-step calculations without forcing you into a grid of cells or a wall of brackets.
That makes it genuinely useful for quick estimates: converting recipe quantities, roughing out a project budget, or checking whether two formulas agree. If you need to go deeper into descriptive statistics, Statistics Calculator is a natural next step. Both live in the tools category alongside other single-purpose utilities built for focus over flash.
Calque runs entirely in the browser with no account required — just start typing. It shines most on a laptop where you can keep it in a side window while working through any problem that's too messy for a standard four-function calculator.
Look inside
How to use
A reactive calculator that evaluates mathematical expressions and updates results automatically as you type. Basic Usage: • Type mathematical expressions in the text area (left side) • Results appear instantly on the right side • Use standard math operations: +, -, *, /, ^, sqrt(), cos(), sin(), etc. • Convert units: "2 inch to cm", "45 deg" for degrees Variables and Functions: • Create variables: a = 25, then use "a" in other calculations • Define custom functions: pow2(x) = x ^ 2, then call pow2(6) • Reference the last result with "last" Lists and Organization: • Create nested lists with indentation using Tab/Shift+Tab • Lists automatically sum their values • Use colons to create categories Keyboard Shortcuts: • Ctrl+D: Duplicate current line or selection • Up/Down arrows: Adjust selected numbers by 1 • Shift+Up/Down: Adjust selected numbers by 10 • Tab/Shift+Tab: Change indentation level Everything updates in real-time as you edit.
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