Basic Calculator
Everyday math with memory, history, and keyboard shortcuts — saved in this browser.
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About this tool
What is the Basic Calculator?
The Wansify Basic Calculator is a free online calculator for addition, subtraction, multiplication, division, percentages, square root, square, reciprocal and memory. It works with your keyboard and keeps your last 30 results in this browser's local storage.
How to use it
- 1Type numbers and operators on your keyboard or click the buttons.
- 2Press Enter or = to see the result.
- 3Use % for percentages, for example 200 + 10 % gives 220.
- 4Click any saved result in the history to reuse it.
Features
- Addition, subtraction, multiplication and division
- Percentages that work like a handheld calculator
- Square root, square, reciprocal and memory keys (MC, MR, M+, M−)
- Keyboard support: digits, + − * /, Enter, Backspace and Esc
- History of the last 30 results saved in your browser
- Floating-point rounding fixed, so 0.1 + 0.2 = 0.3
- Division-by-zero protection
FAQ
Common questions about the Basic Calculator
Can I use the calculator with my keyboard?
Yes. Type digits and + − * /, press Enter or = for the result, Backspace to delete a digit and Esc to clear.
How does the percent key work?
After + or −, % takes a percentage of the first number, so 200 + 10 % gives 220. On its own, % divides the number by 100.
Where is my calculation history saved?
In your browser's local storage on this device. It is never sent to a server, and Clear history removes it.
Is the online calculator free?
Yes. It is free to use with no sign-up.
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