🧮 Math Tool

Basic Calculator

A clean, fast, full-featured calculator for everyday arithmetic — addition, subtraction, multiplication, and division — with keyboard support, history log, and percentage shortcut.

0
HISTORY
KEYBOARD SHORTCUTS
0–9Digits
+ − * /Operations
EnterEquals (=)
EscClear (AC)
BackspaceDelete last digit
%Percentage
MEMORY

Frequently Asked Questions

How does the % key work?
Pressing % converts the current number to a decimal fraction of the previous operand. For example: 200 + 15% = 230 (15% of 200 = 30, then 200+30).
How do I use keyboard input?
Click anywhere on the page first to focus it, then type digits and operators directly. Press Enter for equals, Esc to clear, and Backspace to delete.