Math
Scientific calculator
Evaluate scientific expressions with DEG/RAD modes, trigonometry, logarithms, powers, roots, constants, memory, and history.
Calculators / Math / Standard calculator
Standard calculator
Use a fast four-function calculator with percentage, backspace, keyboard support, and local history.
On this page
Result0
Calculator controls
How to calculate
Use a fast four-function calculator with percentage, backspace, keyboard support, and local history.
Calculations use the entered arithmetic operators with standard order of operations.
Worked example
Calculation: 0.
Result: 0 .
Assumptions and limits
The expression is parsed safely. It supports numbers, parentheses, addition, subtraction, multiplication, division, powers, and percentage entered through the keypad.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
The standard calculator provides familiar desktop and mobile arithmetic without sending the expression to a server.
When this tool is useful
Handle quick everyday arithmetic with mouse, touch, keyboard, or a numeric keypad.
Understanding your inputs
| Input | What to enter |
|---|---|
| Calculation | Enter the value in the format shown. |
Frequently asked questions
Can I use my keyboard?
Yes. Use number keys, decimal point, parentheses, +, −, *, /, Enter, Backspace, and Escape.
Is my calculation history uploaded?
No. The calculator history is stored only in this browser and can be cleared at any time.