Scientific Calculator

Full scientific calculator with trigonometry, logarithms and powers

What is it and how does it work?

A scientific calculator goes beyond the four basic operations to handle the functions used in maths, science and engineering: trigonometry (sin, cos, tan), logarithms, exponents and powers, roots, constants like π and e, and parentheses for grouping. Where a basic calculator stops at arithmetic, a scientific one evaluates a full expression — something like sin(30) + log(100) × 2 — respecting the order of operations so the result matches what you would get working it out properly on paper.

The detail that trips people up most is order of operations combined with grouping: functions and powers bind tightest, then multiplication and division, then addition and subtraction, and parentheses override all of it. A scientific calculator parses the whole expression and applies these rules consistently, so you can type a formula in one go instead of computing it piece by piece. This tool runs entirely in your browser and is ready instantly, with no app to install.

Common use cases

• Trigonometry for homework or work: evaluate sin, cos and tan of an angle as part of a larger formula.
• Logarithms and exponents: compute powers, roots and logs for science, finance or engineering calculations.
• Evaluating a full expression: type a formula with parentheses and functions and get the correct result in one step.

Frequently asked questions

Does it use degrees or radians for trig functions?

Trigonometric functions can be computed in either degrees or radians, and the two give very different results, so check which mode is active before relying on a sin, cos or tan value. Many errors come from entering degrees while the calculator expects radians.

How does it handle order of operations?

It follows standard precedence: functions and exponents first, then multiplication and division, then addition and subtraction, with parentheses overriding everything. This is why typing a whole expression gives the same answer as working it out carefully by hand.

What is the difference from a basic calculator?

A basic calculator does arithmetic on numbers as you press keys. A scientific one evaluates complete expressions with functions, powers, roots and constants, applying precedence rules — so it handles formulas a basic calculator simply cannot express.

What do the constants π and e represent?

π (about 3.14159) is the ratio of a circle's circumference to its diameter, used throughout geometry and trigonometry. e (about 2.71828) is the base of natural logarithms, central to growth, decay and compound interest. Both are built in so you do not type long decimals.

Math

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