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Basic Math Calculators

Scientific Calculator

Free online scientific calculator with trigonometry, logarithms, powers, roots, factorials, constants and degree/radian modes.

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About the Scientific Calculator

A full scientific calculator in your browser. It supports sin, cos, tan and their inverses, hyperbolic functions, natural and base-10 logarithms, exponents, roots, factorials, π and e, with a switch between degrees and radians.

Also known as: online scientific calculator, trig calculator, casio calculator online, math calculator, engineering calculator.

How to use this calculator

  1. Type your calculation with the keypad or your keyboard.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Functions: sin cos tan asin acos atan sinh cosh tanh ln log sqrt cbrt abs exp n!

Frequently asked questions

Should I use degrees or radians?

Use degrees for everyday geometry (a right angle is 90°). Use radians for calculus and most physics formulas (a right angle is π/2).

What is the difference between log and ln?

log is the base-10 logarithm (log 100 = 2). ln is the natural logarithm with base e ≈ 2.71828 (ln e = 1). For another base use log(x, base).

How is 2^3^2 evaluated?

Exponents are right-associative, so 2^3^2 = 2^(3^2) = 2^9 = 512.