Scientific Calculator
A free online scientific calculator for trigonometry, logarithms, exponents, roots, factorials and percentages, with degree and radian modes.
What is the Scientific Calculator?
A scientific calculator evaluates full expressions with the correct order of operations, and includes functions beyond basic arithmetic.
How does it work?
Type or tap an expression. It is parsed safely in your browser (no code execution) using standard precedence: brackets, powers, multiplication/division, then addition/subtraction. Implicit multiplication like 2π is supported.
Formula
Order of operations: ( ) → ^ → × ÷ → + −
Example
sin(30) + √16 × 2 = 0.5 + 8 = 8.5 in degree mode.
Frequently asked questions
What does log mean here?
log is base 10 and ln is the natural logarithm (base e). log2 is also supported.
Why does tan(90) show an error?
tan 90° is undefined because cos 90° is zero.
Related tools
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