How to use this scientific calculator

Enter a calculation with the on-screen keypad or your keyboard, then press equals to get the result. You can use standard arithmetic, brackets, powers, square roots, logarithms and trigonometric functions in one place. The Ans button lets you reuse the previous result without typing it again, which is useful for multi-step calculations.

For trigonometry, choose DEG when your angle is measured in degrees and RAD when it is measured in radians. This is especially important for sin, cos, tan and inverse trigonometric calculations because the same numeric input gives different results depending on the selected angle mode.

What calculations are supported?

This online scientific calculator supports addition, subtraction, multiplication, division, percentages, powers, roots, factorials, logarithms, natural logarithms, constants such as π and e, and common trigonometric functions. It is designed for quick school, college, engineering and everyday calculations directly in your browser.

Calculations run on your device, so you can use the tool instantly without creating an account. For important academic, financial or professional work, verify critical results independently and use the required rounding rules for your subject or task.

Scientific Calculator FAQ

Is this scientific calculator free?
Yes. Tools2030 provides this calculator free to use in your browser with no signup required.

Can I use degrees and radians?
Yes. Use the DEG and RAD controls to switch angle modes before using trigonometric functions.

Does it support logarithms and factorials?
Yes. You can calculate common logarithms, natural logarithms, factorials, powers, roots and other advanced operations.