Free Online Calculator
A fast, free online calculator for everyday arithmetic. Type an expression or tap the buttons — it respects the order of operations and parentheses.
Respects order of operations and parentheses (e.g. 2 + 3 × 4 = 14). Type or tap; press Enter or = to calculate. Runs in your browser.
Quick answer
This calculator evaluates a whole expression at once, following the standard order of operations: parentheses first, then × and ÷, then + and −. For example, 2 + 3 × 4 = 14, not 20. Use parentheses to change the order: (2 + 3) × 4 = 20.
Formula & method
Enter a math expression using digits, + − × ÷, and parentheses, then press = or Enter. The calculator parses the whole expression and applies standard operator precedence (multiplication and division before addition and subtraction). Everything is computed locally in your browser — nothing is uploaded.
Examples
- Input
- 2 + 3 × 4
- Result
- 14
- Why
- × is done before +: 3 × 4 = 12, then + 2 = 14.
- Input
- (2 + 3) × 4
- Result
- 20
- Why
- Parentheses first: 2 + 3 = 5, then × 4 = 20.
- Input
- 7 ÷ 8
- Result
- 0.875
- Why
- Seven divided by eight.
When to use this tool
- Quick everyday arithmetic.
- Calculations with mixed operations where the order matters.
- When you want correct precedence without reaching for a physical calculator.
Common mistakes
- Expecting strict left-to-right evaluation — 2 + 3 × 4 is 14, not 20, because × binds tighter than +.
- Forgetting to close a parenthesis.
- Typing the letter x instead of × (use the × button or *) for multiplication.
Frequently asked questions
Does it follow the order of operations?
Yes. It applies the standard PEMDAS / BODMAS rules: parentheses, then multiplication and division, then addition and subtraction.
Can I use my keyboard?
Yes. Type the expression directly and press Enter to evaluate; the on-screen buttons are optional.
Is my input sent anywhere?
No. The calculation runs entirely in your browser and nothing is uploaded.
How do I do powers, roots, or trigonometry?
For advanced math — powers, roots, logarithms, and trigonometry — use the scientific calculator.
Why isn't 0.1 + 0.2 exactly 0.3?
Computers use binary floating-point, so some decimals are approximate. Results are rounded for display, but tiny differences can appear in long calculations.
Sources & references
External references open in a new tab. We are independent and not affiliated with these organizations.
- ✓ Free to use
- ✓ No sign-up required
- ✓ Runs entirely in your browser — nothing is uploaded.
- ✓ Formula and method shown above
Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.
Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.
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