Scientific Calculator
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This scientific calculator evaluates full mathematical expressions rather than a single fixed formula. Powered by a math expression engine, it understands operator precedence, parentheses, trigonometric and logarithmic functions, powers, and roots, returning a numeric answer for any valid input. It is a general-purpose tool for algebra, trigonometry, and everyday arithmetic.
How it works
- Type or build an expression such as 2*(3+4), sqrt(2), 2^10, or sin(0) using the keypad and function buttons.
- The expression is parsed and evaluated with standard precedence rules — exponents before multiplication and division, and those before addition and subtraction — with parentheses overriding the order.
- A valid expression returns a number; anything malformed (unbalanced parentheses, unknown symbols, or a non-numeric result) is treated as invalid rather than producing a wrong answer.
Worked examples
Evaluate 2 × (3 + 4) respecting parentheses.
- Resolve the parentheses first: 3 + 4 = 7.
- Multiply: 2 × 7.
- Return the numeric result.
2*(3+4) = 14
Raise 2 to the 10th power.
- Enter 2^10 using the power operator.
- The engine computes 2 multiplied by itself ten times.
- Return the result.
2^10 = 1024
Frequently asked questions
- What functions can I use?
- The calculator supports common scientific functions including sqrt for roots, trigonometric functions such as sin, cos, and tan, logarithms, and the power operator ^. You combine them freely inside one expression, and parentheses group sub-calculations.
- Does it follow order of operations?
- Yes. Expressions are evaluated with standard precedence — parentheses first, then exponents, then multiplication and division, then addition and subtraction — so 2 + 3 * 4 returns 14, not 20.
- Are trigonometric functions in degrees or radians?
- The underlying math engine uses radians by default, so sin(0) is 0 and sin(pi/2) is 1. If you need degrees, convert by multiplying your angle by pi/180 inside the expression.
- What happens if I enter an invalid expression?
- If the input cannot be parsed into a single number — for example a missing parenthesis or an unknown symbol — the calculator reports it as invalid instead of guessing, so you never get a silently incorrect answer.