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Scientific Calculator

Trigonometry, logarithms, powers and constants with full expression entry.

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Type an expression — brackets and functions are supported.

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History

Click an entry to load it back.

  1. Evaluated expressions appear here.

Quick Tool Overview

The Scientific Calculator takes a whole expression rather than one keystroke at a time. Type something like (3 + 4) * sin(30) / log(100) and the answer updates as you type, with brackets, operator precedence and nested functions all handled properly.

What it does
Evaluates full scientific expressions with functions and constants
You give it
An expression typed in ordinary maths notation
You get back
A live answer, with your previous expressions kept
Best for
Homework, exams, lab notebooks and engineering checks
Calculators Free, unlimited use No sign-up Runs in your browser

About the Scientific Calculator

A scientific calculator that takes a whole expression rather than one keystroke at a time. Type something like (3 + 4) * sin(30) / log(100) and the answer updates as you type, with brackets, operator precedence and nested functions all handled properly.

It covers the functions an exam paper or a lab notebook actually asks for: sine, cosine and tangent plus their inverses in degrees or radians, natural and base-10 logarithms, arbitrary powers and roots, factorials, absolute value, and the constants pi and e. A degree and radian toggle sits next to the display because it is the single most common source of a wrong trig answer, and the history panel keeps your previous expressions so you can reuse one instead of retyping it.

Key features of the Scientific Calculator

Whole-expression entry

Type the sum the way it is written on the page, with brackets and precedence respected, instead of pressing one key at a time.

Degrees and radians toggle

Placed next to the display, because the wrong mode is the single most common source of a wrong trig answer.

The functions a paper asks for

Sine, cosine and tangent with their inverses, natural and base-10 logarithms, powers, roots, factorials and absolute value.

Pi and e built in

The constants are available by name at full precision rather than typed as a rounded decimal.

History panel

Previous expressions are kept so you can reuse one instead of retyping it.

How to use the Scientific Calculator

  1. 1

    Type your expression

    Enter the whole calculation, including brackets and function names such as sin, cos, log and sqrt.

  2. 2

    Set degrees or radians

    Switch the angle mode before using a trigonometric function. The current mode is shown next to the display.

  3. 3

    Read the live answer

    The result updates as you type, so a typo shows up immediately rather than after you press equals.

  4. 4

    Reuse from history

    Click any earlier expression in the history list to load it back into the input and edit it.

Frequently asked questions

Both, and you choose. The toggle beside the display sets the angle mode for sin, cos, tan and their inverses. Getting this wrong is the usual reason a trig answer looks strange, so the current mode is always visible.

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