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Quick guide

What This Calculator Does

The Mathematical Expression Calculator is for entering a complete numeric formula in one field instead of pressing a basic calculator through one operation at a time. It handles arithmetic, parentheses, powers, common functions, pi, e, and several familiar implicit-multiplication forms.

Supported input includes:

  • operators: +, -, *, /, and ^;
  • grouping with parentheses ();
  • functions: sin(), cos(), tan(), sqrt(), log(), ln(), abs(), ceil(), floor(), round(), and exp();
  • constants: pi and e;
  • implicit multiplication such as 2pi, 2(3+4), 2sqrt(9), and (1+2)(3+4).

Each successful calculation is added to the current page’s recent history, with the newest result first and up to 10 entries retained for quick checking and copying.

When to Use It

  • You want to check a complete formula such as 2 + 3 * (4 - 1)^2.
  • You need parentheses, powers, roots, logarithms, or trigonometric functions in one expression.
  • You are checking homework, code, a spreadsheet formula, or a numeric estimate.
  • You prefer math-like notation with constants and implicit multiplication.

For variables, equations, symbolic simplification, matrices, integrals, or derivatives, use a specialist tool. For keypad-style DEG/RAD, factorial, permutation, combination, or memory work, use the Scientific Calculator; for fraction arithmetic, decimal-place rounding, or dedicated logarithm input, see the Fraction Calculator, Rounding Calculator, and Logarithm Calculator.

Inputs Explained

Expression Input

Read the full guide

Frequently Asked Questions

What does this calculator evaluate?

It evaluates numeric expressions made from numbers, operators, parentheses, common functions, and pi/e constants. It is not a variable or symbolic-algebra solver.

Can I type 2(3+4) or 2pi directly?

Yes. These common forms are treated as implicit multiplication. Add explicit parentheses whenever division and implicit multiplication could be grouped in more than one way.

Do trig functions use degrees or radians?

sin, cos, and tan use radians, so sin(pi/2)=1. Convert degree inputs to radians before evaluating.

What is the difference between log and ln?

log is base 10 and ln is the natural logarithm, so log(100)=2 while ln(e)=1.

Can it solve equations or use variables?

No. The page evaluates finite numeric expressions and does not provide variable assignment, equation solving, symbolic simplification, or graphing.

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Math Expression Calculator

Evaluate numeric expressions with parentheses, powers, common functions, pi/e constants, implicit multiplication, and recent history.

Supported Functions and Constants

Basic Operations: +, -, *, /, ^, ()

Functions: sin(), cos(), tan(), sqrt(), log(), ln(), abs(), ceil(), floor(), round(), exp()

Constants: pi, e