Free online calculator

Scientific Calculator

Use the Scientific Calculator for trigonometry, inverse trigonometry, logarithms, square roots, powers, factorials, combinations, permutations and longer expressions.

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Recent calculations

Your recent calculations will appear here.

How to use the Scientific Calculator

  1. Enter an expression directly or use the calculator buttons.
  2. Choose DEG or RAD for trigonometric calculations.
  3. Use functions such as sin, cos, tan, logarithms, roots, powers and factorials.
  4. Press equals or Enter to calculate and keep recent results in history.

Examples

Trigonometry

In DEG mode, sin(30) returns 0.5.

Combined expression

Calculate expressions such as sqrt(144) + 5^2 in one step.

Frequently asked questions

Is the Scientific Calculator free to use?

Yes. You can use the tool without creating an account.

What is the difference between DEG and RAD?

DEG interprets angles in degrees while RAD interprets them in radians.

Does this tool work on a phone?

Yes. The interface is designed to work on phones, tablets and desktop browsers.

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