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Scientific Calculator

Evaluate scientific expressions in the browser.

Use the Scientific Calculator tool

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What this scientific calculator does

Scientific Calculator evaluates a typed expression rather than a sequence of button presses, so you can see and correct the whole calculation. It supports the usual trigonometric, logarithmic, root and power functions, factorials, the constants pi and e, and implicit multiplication such as 2pi or 3(4+1).

Trigonometry follows the degree or radian mode you select; a wrong mode is the most common source of unexpected answers. Results use standard floating-point arithmetic, so very large or very small values can lose precision. It is a general calculator, not a symbolic maths engine.

Why use it

  • Check a calculation without switching apps.
  • See the full expression before evaluating it.
  • Keep a short history of recent results.

How to use it

  1. 1Type an expression or use the keypad.
  2. 2Choose degrees or radians for trigonometric functions.
  3. 3Press equals to evaluate.
  4. 4Review the history to compare recent results.

Worked examples

Trigonometry

Input

sin(30) in degree mode

Output

0.5.

Logarithm

Input

log(1000)

Output

3, using base 10. Use ln for the natural logarithm.

Common mistakes

  • Leaving the calculator in the wrong angle mode.
  • Writing log when you mean ln, or the reverse.
  • Expecting exact fractions for irrational results.

Frequently asked questions

Which functions are supported?
sin, cos, tan, asin, acos, atan, sqrt, cbrt, ln, log, log2, abs, exp, floor, ceil and round, plus powers, factorial and parentheses.
Is log base 10 or natural?
log is base 10; ln is the natural logarithm. log2 is base 2.
Why is my answer slightly off?
Floating-point arithmetic rounds some values. Displayed precision is limited to avoid noise.
Does it support variables?
No. It evaluates numeric expressions only.

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