Online Calculator
A free calculator with percentages, parentheses and full keyboard support.
History
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The Calculatorify online calculator lets you do quick math on your phone or computer without installing anything. Beyond the four basic operations it handles percentages and parentheses with the correct order of operations.
Your full expression stays visible on the display so you can catch typos before you hit equals. Recent results are kept in a history list — tap one to reuse it in a new calculation.
How to use it
- Enter numbers and operators with the on-screen keys or your keyboard.
- Use parentheses to control precedence, e.g. (12 + 8) × 3.
- Press = or Enter to see the result.
- Use ⌫ (Backspace) to delete the last character and C (Esc) to clear everything.
Formula
Order of operations: parentheses first, then multiplication/division, then addition/subtraction.The % key divides the number before it by 100: 200 × 15% = 30.
Worked Example
(1,250 + 750) × 18% evaluates the parentheses first (2,000), then applies the percentage, giving 360.
Frequently Asked Questions
Is this online calculator free?
Yes. Every calculator on Calculatorify is free and requires no sign-up.
Can I use my keyboard?
Yes. Digits, + − * /, parentheses, Enter (=), Backspace (delete) and Esc (clear) are all supported.
Does it follow the order of operations?
Yes. Multiplication and division are evaluated before addition and subtraction, and anything in parentheses is always evaluated first.
Are my calculations stored?
No. Everything runs locally in your browser and nothing is sent to a server.