Bū tools

Calculator

Simple or scientific, with history.

What it does

A calculator: + − × ÷, brackets, power and percent. The result shows as you type; = keeps it and starts again from it.

• Percent like on a calculator: 200 + 10 % = 220, 200 − 10 % = 180, 50 % × 80 = 40.
• Scientific adds sin, cos, tan (in degrees or radians: the Deg / Rad key), ln, log, √, x², xʸ, π, e, x!, 1/x (of the whole calculation), eˣ and 10ˣ. You can write 2π or 3(4 + 1) without ×.
• On a computer, type with the keyboard: Enter for =, Backspace to delete, Esc to clear.
• Tap the result to copy it. Tap a line of the history to reuse its result.

Free, no account, nothing is sent: it runs in your browser, even offline.

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