Scientific Calculator
A scientific calculator with trigonometric functions, logarithms, powers, and more.
This scientific calculator supports a full range of mathematical functions: trigonometry (sin, cos, tan and their inverses), logarithms (log base 10 and natural log ln), exponential functions (eˣ, 10ˣ), powers (xⁿ), square root, factorial (n!), constants π and e, and parentheses for complex expressions. Switch between degree and radian mode using the DEG/RAD toggle. The calculator builds expressions step by step and shows them as you type, evaluating when you press =.
The calculator also includes advanced functions for engineering and science: hyperbolic functions (sinh, cosh, tanh), absolute value (|x|), cube root (∛), base-2 logarithm (log₂), floor/ceiling/round, modulo (mod), the golden ratio (φ), and an answer memory (Ans) that inserts the last result into the next expression. A history of the last 5 calculations is stored for reference.
Frequently Asked Questions
How do I use trigonometric functions?
Press sin, cos, or tan, then type the angle value, then close with ). For example, sin(30) in DEG mode returns 0.5. Switch between degrees and radians using the DEG/RAD toggle at bottom left.
What is the difference between log and ln?
log calculates the base-10 logarithm (log₁₀), while ln calculates the natural logarithm (base e ≈ 2.718). For example, log(100) = 2 and ln(e) = 1. Use log for decibels, pH, and decades; use ln for continuous growth and decay.
How do I enter powers (xⁿ)?
Type the base number, press the xⁿ button (which inserts ^), then type the exponent. For example: 2 ^ 10 = 1024. You can also use x² to quickly square a number.
How does factorial (n!) work?
Press n!, type the number, then close with ). For example: fact(5) = 120 (because 5! = 5×4×3×2×1 = 120). Factorial is only defined for non-negative integers up to 170.
Can I use π in expressions?
Yes. Press the π button to insert the constant π (≈ 3.14159265358979). You can use it in any expression, for example: 2 × π calculates the circumference factor, or sin(π/2) = 1 in radian mode.
How do I use inverse trig functions (arcsin, arccos, arctan)?
Inverse trig functions are accessed by pressing the INV button to activate inverse mode, then pressing sin, cos, or tan. For example, arcsin(0.5) in DEG mode returns 30°. Make sure you are in the correct DEG or RAD mode, as the output unit follows the active mode.
What is the difference between DEG and RAD modes?
DEG (degrees) measures angles in degrees — a full circle is 360°. RAD (radians) measures angles in radians — a full circle is 2π ≈ 6.283. Use DEG for everyday geometry and navigation; use RAD for calculus and physics formulas.
How do I use the Ans (Answer) memory?
After calculating any result, pressing Ans inserts that result into your next expression. For example: calculate 5 ^ 2 = 25, then type Ans + 10 = to get 35. This chaining saves you from retyping long results and reduces rounding errors.
What is the golden ratio (φ)?
The golden ratio φ (phi) ≈ 1.61803398874989 is defined as φ = (1 + √5) / 2. It appears naturally in the Fibonacci sequence, art, architecture, and nature. The φ button inserts this constant directly into your expression.
What advanced functions does this calculator have beyond a basic calculator?
Beyond four basic operations, this scientific calculator adds: trigonometry (sin, cos, tan, arcsin, arccos, arctan), logarithms (log, ln, log₂), exponentials (eˣ, 10ˣ), powers (xⁿ, x²), roots (√, ∛), factorial (n!), hyperbolic functions (sinh, cosh, tanh), constants (π, e, φ), absolute value, floor, ceiling, round, modulo, and a 5-entry history.