ToolCubbyBasic Calculator
A free basic calculator online — add, subtract, multiply, divide, find percentages and square roots, all with full keyboard support.
How to use
- Tap the number buttons and an operator (+, −, ×, ÷) to build your expression.
- Use % to divide the current value by 100, √ to take its square root, and +/- to switch its sign.
- Press = (or Enter) to see the result.
- Press C to clear, or use the keyboard: digits, operators, Backspace to delete, Enter to equals.
Order of operations: multiplication and division are worked out before addition and subtraction, left to right. So 2 + 3 × 4 = 14, not 20.
Calculator formulas
Basic a + b, a − b, a × b, a ÷ b Percent n % = n ÷ 100 Square √n = square root of n Order × and ÷ before + and −, left to right
FAQ
How do I use this basic calculator online?
Tap the buttons to build your expression and press equals, or use your keyboard. Every key works — digits, +, −, ×, ÷, %, ., Enter for equals and Backspace to delete.
Why does 2 + 3 × 4 equal 14?
Because multiplication has priority: it is calculated as 2 + (3 × 4) = 2 + 12 = 14.
Is it private?
Yes — everything runs in your browser.
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More FAQs
Are these calculators free to use?
Yes, every calculator is completely free, with no signup and no limits.
Do I need an account or install anything?
No. Everything runs in your browser — no install, no account.
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