Mathematics

Scientific and math calculator

Nine functions on one page: a scientific calculator with precedence and parentheses, rule of three, fractions, powers and roots, mean, proportion, division with remainder, GCD and LCM, and rounding. Every function includes a guide with inputs, formula, how to read the result and an example.

9 functionsMathematics

9 functions

Expression

Accepts + − × ÷ ^, parentheses, ! and functions such as sqrt, sin, cos, tan, log, ln. Use a dot or a comma as decimal separator.

Result

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Scientific calculator

Function guide

What it does: Evaluates a complete mathematical expression — numbers, parentheses, powers, roots, factorial and trigonometric, logarithmic and rounding functions — and returns a single result.
What it is for: For chained calculations a phone calculator forces you to split: (2+3)^2, 1.05^24, sin(30) with the angle in degrees and the same angle in radians.
When to use it: Use it when the calculation has operator precedence, grouping by parentheses or a function: read left to right, those would give a different answer.
What to fill in: The typed expression and the choice between degrees and radians. Operators: + − * / ^ %, parentheses and ! for factorial. Functions: sqrt, cbrt, abs, ln, log, exp, sin, cos, tan, asin, acos, atan, round, floor, ceil. Constants: pi and e.
Formula: Reading follows mathematical precedence: power before multiplication, multiplication before addition, parentheses first. Power associates to the right (2^3^2 = 512). Trigonometry respects the chosen mode: in degrees, sin(30) uses 30°, not 30 rad. The result is refused when the expression is invalid, has an open parenthesis or divides by zero — an approximate number never takes the place of an error.
What each result means: One number, formatted with up to eight significant digits. An expression with no valid result shows an error message instead of zero, so the difference between 'it is zero' and 'it could not be calculated' stays visible.
Worked example: (2+3)^2*sqrt(16) gives 100: the parenthesis is 5, its square is 25, the root of 16 is 4 and the product is 100. sin(30) in degrees gives 0.5.

Each calculation's assumptions are in the function guide — no constant stays hidden.

Calculators & Converters

Expression

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