Does this calculator follow order of operations?

Yes. The calculator evaluates expressions using standard mathematical precedence (PEMDAS): parentheses first, then exponents and roots, then multiplication and division, then addition and subtraction. You can nest parentheses as deeply as needed.

How do I switch between degrees and radians?

Click the DEG/RAD toggle button near the trigonometric functions. The current mode is displayed on the button. Degree mode is the default for general use, while radian mode is needed for most calculus and physics problems.

Can I use the previous result in a new calculation?

Yes. Press the Ans button to insert the previous result into your expression. This lets you chain calculations without manually retyping intermediate values.

What mathematical functions are supported?

The calculator supports basic arithmetic, trigonometric functions (sin, cos, tan and their inverses), logarithms (log base 10 and natural ln), exponentials, square roots, nth roots, factorials, absolute value, and the constants π and e.

Is the calculator accurate for engineering use?

The calculator uses JavaScript's Math object, which follows IEEE 754 double-precision floating-point standards. This provides approximately 15-16 significant digits of precision, which is sufficient for most engineering applications.

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Scientific Calculator

A scientific calculator online performs advanced mathematical functions including trigonometry (sin, cos, tan), logarithms (log, ln), exponentials, roots, and factorials. It evaluates full expressions using standard order of operations, supporting both degree and radian angle modes.

100% FreeNo Signup RequiredBrowser-BasedPrivate & Secure

What is Scientific Calculator?

A scientific calculator is an online computational tool that evaluates mathematical expressions containing advanced functions such as trigonometric, logarithmic, exponential, and root operations, following standard mathematical operator precedence.

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Start Using Scientific Calculator Today

When your math goes beyond basic arithmetic — trigonometric identities, logarithmic scales, exponential growth, or nested expressions — you need a scientific calculator that handles the full complexity. This free online scientific calculator delivers expression-level evaluation, degree/radian toggling, and session history in a clean interface that works on any device, no physical calculator required.

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