Calculator

A quick four-function calculator

Overview

Calculator is a standard four-function calculator with full keyboard support. Add, subtract, multiply, and divide, with the running expression shown on a small history line above the main display. It is part of the kimtos new-tab app suite.

The window opens at a compact size — a calculator gains nothing from going full-width, so the maximize control stays disabled.

Highlights

• Four functions — addition, subtraction, multiplication, and division.
• History line — a secondary line shows the expression so far (for example 12 × 3 =) above the current number.
• Sign and percent — flip the sign with ±, or convert the current number to a percentage with %.
• Repeat equals — press = again to apply the last operation once more.
• Clean results — answers are trimmed to remove floating-point noise; dividing by zero (or any non-finite result) shows Error.
• Keyboard and mouse — type on the keypad or click the tiles. Keyboard input is scoped to the calculator window, so it never disturbs other open apps.

Privacy model

Calculator keeps no data at all. It has no storage, no history beyond the current calculation, no account, and no network. The running total lives only in memory while the window is open and is gone when you close it — nothing is ever written to disk or uploaded.

Reference

A quick reference for the keypad and keyboard shortcuts.

Keypad

Key	What it does
AC	Clear everything and start over
±	Flip the sign of the current number
%	Divide the current number by 100
÷ × − +	Choose an operator
0–9	Enter a digit
.	Add a decimal point
=	Evaluate the expression

Keyboard shortcuts

Keys	Action
0–9	Enter a digit
. or ,	Add a decimal point
+ - * /	Choose an operator
Enter or =	Evaluate (press again to repeat the last operation)
Backspace	Delete the last digit
Escape, c, or C	Clear everything (AC)
%	Percentage of the current number

The ± (sign flip) action is available on the keypad only; there is no keyboard shortcut for it.