Do trigonometric functions use radians or degrees?

Radians. To use degree values, multiply by π/180 first: sin(30 degrees) becomes sin(30 * pi / 180) = 0.5. This matches the convention of JavaScript, Python, C++, and almost every programming language.

What is the order of operations used?

Standard PEMDAS/BODMAS — Parentheses (Brackets), Exponents (Orders), Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Unary minus is handled first. Parentheses always override precedence.

No. This is a direct expression evaluator, not a symbolic algebra system. Substitute numeric values before entering. For symbolic work (solving, simplification, differentiation), use dedicated tools like Wolfram Alpha, SymPy, or a computer algebra system.

What happens with very large or very small numbers?

The calculator uses JavaScript's IEEE 754 double-precision floats, which handle roughly 10^-308 to 10^308. Computations beyond this return 'Infinity' or lose precision. Scientific notation is supported in the output (e.g., 1.23e+15 means 1.23 × 10^15).

Is this accurate enough for engineering work?

For almost all practical needs, yes — 15 significant digits is more than any physical measurement requires. For specialized numerical work (ill-conditioned matrices, very subtle iterative algorithms), a dedicated numerics library like NumPy or MATLAB may be preferred because it exposes more control over precision.

Why not use my phone's built-in calculator?

Phone calculators are fine for quick arithmetic but often lack multi-line history, clear operator precedence display, or easy copy-paste of expressions. This calculator shows your full expression before evaluating so you can verify it, which helps catch errors in long calculations.

Does this calculator handle imaginary or complex numbers?

No, only real numbers. Inputs like sqrt(-1) return 'NaN' (not a number). For complex arithmetic, you would need specialized software. For most school and engineering problems, real-only is the normal expectation.

Scientific Calculator

Math

Evaluate mathematical expressions with trig, log, exponents, and constants.

Math

Scientific Calculator

Generated on April 24, 2026

Expression

Supported: + − × ÷ ^ sin cos tan sqrt log ln abs pi e

?What is the Scientific Calculator?

A scientific calculator evaluates arbitrary mathematical expressions that include arithmetic, trigonometric functions (sin, cos, tan), logarithms (log, ln), square roots, exponents, absolute value, and mathematical constants (π and e). It supports nested parentheses and standard operator precedence, so expressions written with normal math notation are evaluated exactly as you would expect. This tool replaces a physical scientific calculator for students working through problem sets, engineers doing quick checks, and anyone evaluating complex expressions without firing up a spreadsheet.

The Formula

Standard order of operations (PEMDAS / BODMAS): Parentheses → Exponents → Multiplication/Division (left to right) → Addition/Subtraction (left to right). Trigonometric functions take radians as input.

PEMDAS ensures that compound expressions are unambiguous: 2 + 3 × 4 is always 14 (not 20), because multiplication precedes addition. Parentheses override precedence, so (2 + 3) × 4 = 20. Trigonometric functions in this calculator, like most programming languages, expect radians; to pass degrees, convert first using × π / 180. The calculator handles negative values, fractional exponents, and very large or very small results via JavaScript's IEEE 754 double-precision arithmetic (about 15–17 significant digits of accuracy).

Practical Examples

2 * (3 + 4) ^ 2 = 98 — parentheses first, then exponent, then multiplication.

sqrt(16) + log(100) = 4 + 2 = 6 — square root and base-10 log of familiar numbers.

sin(pi / 2) = 1 — 90 degrees in radians gives the sine's maximum value.

ln(e ^ 5) = 5 — the natural log and exponential are inverse functions.

sqrt(3 ^ 2 + 4 ^ 2) = 5 — the classic Pythagorean 3-4-5 right triangle.

(1 + 0.05) ^ 10 = 1.6289 — compound interest factor for 5% annual growth over 10 years.

Frequently Asked Questions

Arithmetic: +, −, *, /, ^ (power). Functions: sqrt(), abs(), sin(), cos(), tan(), log() for base 10, ln() for natural log (base e). Constants: pi (3.14159…) and e (2.71828…). Grouping: parentheses at any depth. Implicit multiplication (2pi) is not supported — use 2*pi.

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Scientific Calculator

Scientific Calculator

?What is the Scientific Calculator?

The Formula

Practical Examples

Frequently Asked Questions

Which operators and functions are supported?

Do trigonometric functions use radians or degrees?

What is the order of operations used?

Can I use variables?

What happens with very large or very small numbers?

Is this accurate enough for engineering work?

Why not use my phone's built-in calculator?

Does this calculator handle imaginary or complex numbers?

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