A clean, fast four-function calculator for everyday arithmetic. Works instantly in any browser — no app, no download, no sign-up required. Supports positive and negative numbers and percentage calculations.
Click or tap the digit buttons to enter a number. Press an operator (÷, ×, −, +) to register the operation, then enter the second number and press = to see the result. Press AC at any time to clear everything and start over. The +/− button toggles the sign of the current number between positive and negative. The % button divides the current number by 100, converting it to a decimal percentage — useful for discount and tax calculations. You can also chain operations: 5 + 3 × 2 processes as (5+3) × 2 = 16 when entered sequentially.