An expression solver is a calculator that evaluates mathematical expressions by parsing the entire string and applying the correct order of operations. Unlike basic calculators, it understands that 2 + 3 * 4 equals 14 (not 20), because multiplication has higher precedence than addition.

BODMAS (Brackets, Orders, Division, Multiplication, Addition, Subtraction) and PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) are mnemonics for the mathematical order of operations. They ensure consistent evaluation of expressions.

Supported functions include: Trigonometric (sin, cos, tan - input in degrees), Logarithmic (log for base-10, ln for natural), Roots (sqrt, cbrt), and Other (abs, floor, ceil, round, exp). All functions use standard notation like sqrt(16) or sin(45).

You can use x, y, and z as variables. Set their values in the Variables section, then use them in expressions like '2*x + y' or 'sqrt(x^2 + y^2)'. This is useful for testing formulas with different inputs.

log() is the common logarithm (base 10). For example, log(100) = 2. ln() is the natural logarithm (base e ≈ 2.718). For example, ln(e) = 1. Natural log is more common in science; base-10 is used in everyday calculations.

All trigonometric functions use degrees, not radians. This is more intuitive for most users. For example, sin(90) = 1.

Batch mode lets you solve multiple expressions at once. Enter each expression on a new line, and the solver evaluates all of them simultaneously. You can also upload a .txt file containing expressions.

Common causes include: unbalanced parentheses, missing operators (use '5*3' not '5(3)'), unsupported characters, division by zero, or negative square root. Check the expression syntax and try again.

Calculations use JavaScript's 64-bit floating-point arithmetic (IEEE 754), providing approximately 15-17 significant decimal digits of precision. Results are displayed to 8 decimal places.

Yes! Once the page is loaded, all calculations happen in your browser. No internet connection is needed for computation. Your calculation history is stored in browser memory.

Two constants are available: pi = 3.14159... (ratio of circumference to diameter) and e = 2.71828... (Euler's number, base of natural logarithm). Use them directly in expressions like 'pi * 5^2'.

Use the ^ operator for powers. For example, 2^10 = 1024, 5^2 = 25. For roots, use sqrt() for square root, cbrt() for cube root, or x^(1/n) for nth root.

Yes! Click 'Show Steps' to see how the expression is processed: original input, constant/variable substitutions, function evaluations, and final result.

Click the 'Export' button to download your calculation history or batch results as a text file. Each line will contain the expression and its result.

Supported operators: + (addition), - (subtraction), * (multiplication), / (division), ^ (power/exponent), and parentheses () for grouping. Operators follow standard BODMAS/PEMDAS precedence.