Simple Calculator

A beautifully designed scientific calculator.

Every key is wired up to a real arithmetic engine, so it adds, multiplies, takes square roots, and runs trig functions.

Built entirely from CSS gradients and shadows, so there are no image assets to load and no attribution needed.

What it can do

• Standard arithmetic: add, subtract, multiply, divide

• Scientific functions: sin, cos, tan, log, ln, √, x², xʸ

• SHIFT key unlocks inverse functions: sin⁻¹, cos⁻¹, tan⁻¹, 10ˣ, eˣ

• AC (all clear) and CE (clear entry)

• Results auto-format with thousands separators

• Full keyboard input support (digits, operators, Enter, Escape)