Basic Calculator
A clean, keyboard-friendly calculator for everyday arithmetic: add, subtract, multiply, divide.
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Press equals to save this result.
Expression History
Live calculation
Complete expressions evaluate instantly while incomplete ones wait until finished.
Keyboard support
Use your keyboard for digits, operators, parentheses, Enter, Backspace, and Escape.
Percentage support
Use the percent key to convert a number into a proportion out of 100.
Supported Calculator Functions
+
Addition
Adds numbers together, such as 25 + 17.
−
Subtraction
Finds the difference between numbers.
×
Multiplication
Multiplies values together.
÷
Division
Splits one value by another value.
( )
Parentheses
Controls which part of an expression is solved first.
%
Percent
Converts a number into a proportion out of 100.
^
Powers
Raises one number to the power of another.
√
Square root
Finds the value that squares to the original number.
π, e
Constants
Adds common mathematical constants.
Worked Examples
12 + 8 × 3
Multiplication before addition
12 + 24 = 36
(12 + 8) × 3
Parentheses first
20 × 3 = 60
150 × 20%
Percent means divide by 100
150 × 0.20 = 30
√144
Square root
12
2^3 + 5
Exponent before addition
8 + 5 = 13
1,200 ÷ 16
Division
75
Frequently Asked Questions
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