Calculation steps
- Normalize symbols to sin(30) + sqrt(81)^2.
- Evaluate sine, square root using degrees.
- Return 81.5.
Free Online Calculator
Free scientific calculator for trig, logs, roots, and powers.
A scientific calculator evaluates advanced expressions with trigonometry, logarithms, roots, exponents, constants, percentages, and factorials. Use it for homework checks, coding math, and quick calculations without installing an app.
Functions
sin cos tan log ln sqrt
Constants
pi e tau
Operators
+ - * / ^ % !
Expression
Use degrees for school trig, radians for programming math.
Result
81.5
sin(30) + sqrt(81)^2 evaluated in degrees.
Scientific calculator syntax
Trig
sin(30), cos(pi), tan(45), asin(0.5)
Logs and roots
log(1000), ln(e), sqrt(144), cbrt(27)
Powers
2^8, 9^0.5, (3 + 4)^2
Postfix
5!, 18%, 250 * 18%
Frequently asked questions
What is a scientific calculator?
A scientific calculator evaluates advanced math expressions such as trigonometry, logarithms, powers, roots, constants, percentages, and factorials.
How do I use this online scientific calculator?
Type an expression or tap the buttons, choose degrees or radians for trig, and the calculator updates the result with the normalized expression and steps.
Does this calculator support trigonometry?
Yes. It supports sin, cos, tan, asin, acos, and atan. You can switch between degree and radian mode before calculating.
What constants can I use?
You can use pi, e, and tau. The calculator also accepts the pi symbol and converts it to pi before evaluating.
Can I use percentages and factorials?
Yes. Add % after a value to divide it by 100, or add ! after a non-negative whole number to calculate a factorial.