Scientific Calculator

Advanced scientific calculations with trig, log, and more

A scientific calculator for the everyday stuff and the slightly trickier stuff — trigonometry, logarithms, powers, roots, and constants like π. Type your expression the way you'd write it, and the result appears as you go.

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How to Use This Calculator

  1. Tap the numbers and operators to build your expression.
  2. Use the function buttons for sin, cos, tan, log, ln, and square roots as needed.
  3. Hit = to evaluate the current expression.
  4. Use C to clear everything and start fresh; CE backspaces one character.

Why Use This Calculator?

  • Checking homework without digging out a physical calculator.
  • Quickly working through a formula that needs trig or logs, not just adding.
  • Doing back-of-the-envelope math where a basic phone calculator isn't enough.

Real-World Examples

Sine of 30°

Entering sin(30) returns 0.5, which matches the sine of a 30-degree angle.

Square root of 144

Typing √144 gives 12, useful for reversing a square.

Order of operations

Calculations follow the standard order: parentheses first, then powers and roots, then multiplication and division, and finally addition and subtraction. That's why 2 + 3 × 4 equals 14, not 20.

Frequently Asked Questions

Does it use degrees or radians for trig functions?

Trig functions (sin, cos, tan) use degrees. So sin(30) gives 0.5, the sine of a 30-degree angle. If you're working in radians, convert to degrees first.

Can I use π?

Yes, the π button inserts the value of pi (about 3.14159) into your expression.

Why did I get a strange answer?

Double-check parentheses and your angle mode. A common slip is calculating a trig function in radians when you meant degrees.

Important Disclaimer

This calculator handles standard math expressions. Double-check the result for any work where precision matters.

Privacy

Whatever you type runs in your browser and isn't sent anywhere or saved.

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