Numarly

Scientific Calculator

Perform trigonometric, logarithmic, and power calculations

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What is it?

This scientific calculator supports basic arithmetic along with trigonometric functions (sin, cos, tan), logarithms (log, ln), square/cube powers, square roots, and the constant π.

Formula Explanation

Each function button inserts the corresponding operation into your expression — trigonometric functions operate on radians, log uses base 10, and ln uses the natural base e, matching standard calculator and programming conventions.

Example Calculation

Typing sin(0) and pressing = returns 0, since the sine of 0 radians is 0.

How to Use

  1. Tap number and operator buttons to build your expression.
  2. Use √, x², x³, log, ln, sin, cos, or tan for advanced functions.
  3. Press = to evaluate the expression.
  4. Press C to clear and start over.

Benefits

  • Combines basic arithmetic with trigonometric, logarithmic, and power functions in one tool.
  • No installation needed — works directly in your browser.
  • Familiar button layout similar to a physical scientific calculator.

Use Cases

  • Homework and exam preparation involving trigonometry or logarithms.
  • Quick engineering or physics calculations.
  • Verifying calculations from other tools or textbooks.

What Your Result Means

The result reflects the exact evaluation of your typed expression, following standard order of operations. An "Error" result means the expression was incomplete or invalid — check for unmatched parentheses or missing operands.

Tips

  • Remember that trigonometric functions here use radians, not degrees.
  • Close every open parenthesis before pressing = to avoid errors.
  • Use π as a constant directly in expressions, like 2×π.

Common Mistakes

  • Entering degrees into sin/cos/tan expecting radian-based results, causing unexpected answers.
  • Forgetting to close a parenthesis after using √, sin, cos, tan, log, or ln.
  • Chaining operators without a value between them (like "5 + × 2").

FAQs

What units do the trig functions use?

sin, cos, and tan operate on radians, consistent with standard JavaScript math functions — convert degrees to radians (× π/180) if needed.

What does "log" vs "ln" mean?

log computes the base-10 logarithm, while ln computes the natural logarithm (base e).

Why do I get "Error"?

An error usually means the expression is incomplete or invalid — check that all parentheses are closed and operators have values on both sides.

How do I convert degrees to radians?

Multiply the degree value by π/180 — for example, 90 degrees is 90 × π/180 = π/2 radians.

Can I use nested parentheses?

Yes, the calculator supports standard nested parentheses for grouping operations, as long as every opening parenthesis has a matching closing one.

Trigonometric functions use radians. Expressions are evaluated using standard order of operations.

Last updated: July 25, 2026