A calculator with a tape, one keystroke away

It answers as you type, and it remembers — in the same box you use for everything else.

Coco's calculator showing a running tape of results

Type it, watch it resolve

`2026-1999` reads 27 before you reach the equals key — the number updates while you type, on the longest part that already makes sense. Add a trailing `=` if you like; it just means “done.”

No mode, no app, no clearing a search first. It's the same box you launch apps from.

A real running tape

Answers don't vanish the moment you look away. Each one stays on a tape you can scroll back through and reuse — not a single one-shot result.

The last answer also feeds the next line: type `+ 5` and it continues from where you were, the way a desk calculator does. `ans` works too, anywhere in an expression.

More than four functions

Percentages read the way you say them — `20% of 1500`, or `1500 + 10%`. Then `sqrt`, `ln`, `log`, `sin`, constants like `pi` and `e`, factorial, `mod`, and parentheses, with thousands separators in the result so big numbers stay legible.

Units in the same breath

Type a quantity and a unit and read the converted value on the same line — length, weight, temperature and more. Money has its own page: currency at live rates →

It's already open

The fastest calculator is the one you don't launch. It's behind the hotkey you already press for everything else.

Questions

Do I switch to a calculator mode?

No. Type the expression in the same box you use for everything else; the answer updates as you type.

Does it keep a history?

Yes. Past answers stay on a running tape. The last result also continues the next line, so typing + 5 picks up where you left off.

Can it do more than + - × ÷?

Yes — percentages (20% of 1500), functions (sqrt, ln, sin), constants (pi, e), factorial, mod and parentheses, with thousands separators in the result.

Does it convert units?

Yes. Type the quantity and unit and read the converted value on the same line. For money see the currency page.

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