Scientific Calculator
A full-featured scientific calculator supporting trigonometry, logarithms, complex expressions and user-defined variables. Saves your complete calculation history locally.
Variables
A full-featured scientific calculator in your browser. SolveBar's Scientific Calculator supports trigonometry, logarithms, exponents, complex expressions, and user-defined variables — with a complete calculation history saved locally.
Supported mathematical functions
Trigonometry: sin, cos, tan and their inverses, with degree and radian mode. Logarithms: natural log (ln) and log base 10. Exponentials: e^x and arbitrary powers. Square root, cube root. Factorial, absolute value. Constants: π (pi) and e (Euler's number).
Order of operations
The calculator follows standard PEMDAS/BODMAS order: Parentheses first, then Exponents, then Multiplication and Division, then Addition and Subtraction. Use parentheses liberally to make your intended order explicit.
Using variables in calculations
Assign values to variables for multi-step calculations: let x = 15.7, then use x in subsequent expressions. This is particularly useful for engineering calculations where you are substituting the same measured values into multiple formulas.
Frequently Asked Questions
Does the calculator work in degrees or radians for trig functions?
You can toggle between degree and radian mode. Degree mode is default as it is more intuitive for most users.
Can I enter fractions?
Enter fractions as division: 3/4 evaluates to 0.75.
Is my calculation history saved?
Yes. Your full calculation history including expressions and results is saved to localStorage and persists across browser sessions.