Free Scientific Calculator

Perform advanced mathematical calculations online for free.

Angle mode: Degrees

Tip: Use parentheses to control the order of operations. Keyboard input is not enabled; use the calculator buttons.

About the Free Scientific Calculator

This free scientific calculator helps you solve everyday arithmetic problems and more advanced mathematical expressions directly in your browser. Use it for addition, subtraction, multiplication, division, powers, square roots, logarithms, factorials, constants and trigonometric functions. No account or software installation is required.

How to Use the Scientific Calculator

• Tap the number and operation buttons to build your expression.
• Use parentheses to group parts of a calculation.
• Choose DEG for degrees or RAD for radians before using trigonometric functions.
• Press = to calculate the result. The result can be reused with the ANS button.
• Press AC to clear the calculation, or use backspace to remove the last entry.

Available Functions

Basic arithmetic: addition, subtraction, multiplication and division. Advanced functions: sine, cosine, tangent and inverse trigonometric functions, common logarithm (log), natural logarithm (ln), square root, powers, factorial, absolute value, exponential function, π and Euler’s number (e).

Frequently Asked Questions

Is this scientific calculator free?

Yes. You can use all included calculator functions for free in your browser.

What is the difference between DEG and RAD?

DEG measures angles in degrees, while RAD measures angles in radians. Select the mode that matches your problem.

Can I calculate logarithms and powers?

Yes. Use log for base-10 logarithms, ln for natural logarithms, and the xʸ button for powers.

Does the calculator send my calculations to a server?

No. Calculations are performed locally in your browser, and no account is needed.