Scientific Calculator

Evaluate expressions with powers, roots, factorials, logarithms and trigonometry in degrees or radians, with memory and history.

Type with your keyboard and press Enter. log is base 10, ln is natural; use log(x, b) for other bases.

This session

Your calculations will be listed here. Select one to reuse it.

About the Scientific Calculator

A full scientific calculator that evaluates whole expressions rather than one key press at a time, so operator precedence and brackets work exactly as written: 2 + 3 \times 4 is 14, and 2^{3^2} is 512 because powers group from the right.

It supports powers, roots, factorials, trigonometric and inverse trigonometric functions in degrees or radians, common and natural logarithms, the constants π and e, complex results such as \sqrt{-4} = 2i, a memory register and the previous answer (Ans).

Limitations

Results use double-precision floating point (about 15–16 significant digits).
Factorials above 170! overflow to infinity and are reported as an error.

How to use it

Type an expression with your keyboard or the on-screen keys.
Choose DEG or RAD for trigonometric functions.
Press Enter or = to evaluate. Select any line in the session list to reuse it.

Example

2 * sin(pi/6) + sqrt(16)

→ 5

In radian mode sin(π/6) = 0.5, so the result is 1 + 4.

Questions and answers

Is log base 10 or base e?

log(x) is the base-10 logarithm and ln(x) is the natural logarithm. For any other base write log(x, b), for example log(8, 2) = 3.

Why is −3^2 equal to −9?

Powers are evaluated before the unary minus, as in standard mathematical notation. Write (−3)^2 to square the negative number.

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This session

About the Scientific Calculator

Limitations

How to use it

Questions and answers

Related tools

This session

About the Scientific Calculator

Limitations

How to use it

Questions and answers