Scientific Calculator

Powerful online scientific calculator supporting trigonometric functions, logarithms, exponents, and other scientific operations.

About Scientific Calculator

Scientific Calculator is useful for trigonometry, logarithms, exponents, roots, percentages, factorials, and quick engineering math. Use DEG for degree-based angles and RAD when a formula expects radians.

The calculator now supports the visible function keys, including inverse trigonometric functions, exp, Ans recall, and parentheses for grouped expressions.

Scientific results are rounded for display. Keep the original precision when results feed into another formula or a regulated workflow.

Practical examples for Scientific Calculator

Common calculations

  • sin(30°) = 0.5
  • log(1000) = 3

More examples

  • 2^8 = 256
  • sqrt(144) = 12

How to use it

Enter numbers and operations in order. Use parentheses for grouped expressions such as (2 + 3) × 4, and press Ans to reuse the previous result.

Accuracy check

Confirm angle mode before using sin, cos, tan, asin, acos, or atan. A value in degrees can produce a very different result from the same value in radians.

Frequently asked questions

When should I use DEG or RAD?

Use DEG for everyday angle measurements such as 30° or 90°. Use RAD when working with calculus, physics formulas, or software libraries that expect radians.

Why does the calculator show Error?

Error appears for undefined operations such as division by zero, square roots of negative numbers, invalid logarithms, or inverse trigonometric inputs outside the valid range.