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Scientific Calculator

Advanced calculator with trigonometric functions, logarithms, factorial, and more.

 
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How to Use

  1. Open the calculator — No download or installation required. Type or click buttons to input your expression directly in the browser.
  2. Select DEG or RAD mode — Toggle between degrees and radians for trigonometric functions (sin, cos, tan) depending on your angle units.
  3. Use function buttons — Access logarithms (log, ln), exponentiation (^), square root (√), factorial (!), and constants π and e with one click.
  4. Press = to evaluate — The result appears instantly. All parsing happens client-side with no eval() for security.

Features

  • Supports basic and advanced functions — arithmetic (+, -, ×, ÷), trig (sin, cos, tan), logarithms, exponentiation, square root, and factorial in one compact interface.
  • DEG/RAD toggle — Switch angle units for trigonometric calculations without leaving the tool.
  • One-click constants — Access mathematical constants π and e for quick scientific calculations.
  • Client-side expression parser — Ensures security and privacy — no data is sent to any server and no eval() is used.
  • Responsive layout — Works on desktop and mobile with a clear display that shows the full expression as you type.

Use Cases

  • Homework and exams: Solving problems that require trigonometry, logarithms, or exponentiation without a physical calculator.
  • Engineering calculations: Performing quick physics or engineering computations with one-click access to constants.
  • Teaching: Demonstrating how scientific calculators work to students without needing a physical device.
  • Data analysis: Rapidly computing factorial and root values for statistics tasks.

Frequently Asked Questions

What functions does this calculator support?

This calculator supports basic arithmetic (+, -, *, /, %), exponentiation (^), square root (sqrt), trigonometric functions (sin, cos, tan), inverse trig (asin, acos, atan), logarithms (log base-10, natural log ln), factorial (!), and mathematical constants (pi, e).

How do I switch between degrees and radians?

Click the DEG/RAD toggle button at the top of the calculator display. In DEG mode, trig functions expect arguments in degrees (e.g., sin(90) = 1). In RAD mode, arguments are in radians (e.g., sin(pi/2) = 1).

Is this calculator safe to use?

Yes, the calculator runs entirely in your browser using a custom-built expression parser. It does not use JavaScript's eval() and never sends your input to any server. Your calculations remain private and secure.