A scientific calculator extends beyond basic arithmetic (addition, subtraction, multiplication, division) to include advanced mathematical functions such as trigonometric operations (sin, cos, tan), logarithms, exponentiation, roots, factorials, and constants like π and e. It's designed for students, engineers, and professionals who need to solve complex equations in algebra, calculus, physics, and statistics. Our online scientific calculator is free, requires no download, and works across all devices.

DEG (Degrees) measures angles in degrees, where a full circle equals 360°. This is the most common mode for everyday calculations and geometry problems.

RAD (Radians) measures angles in radians, where a full circle equals 2π radians (≈6.283). Radians are the standard unit in higher mathematics, calculus, and physics because they simplify many formulas. Switch between modes by clicking the DEG/RAD badges at the top of the calculator display.

MS (Memory Store) – Saves the current display value to memory.
MR (Memory Recall) – Retrieves the stored value and inserts it into your expression.
M+ (Memory Add) – Adds the current display value to the stored memory value.
M- (Memory Subtract) – Subtracts the current display value from the stored memory value.
MC (Memory Clear) – Resets the memory to zero. When memory contains a non-zero value, a green "M" indicator appears in the display.

This scientific calculator follows the standard mathematical order of operations (PEMDAS/BODMAS):
1. Parentheses / Brackets
2. Exponents / Orders (powers and roots)
3. Multiplication and Division (left to right)
4. Addition and Subtraction (left to right)

We recommend using parentheses to explicitly group operations and avoid ambiguity. For example, sin(30)+5×2 is computed as sin(30)+(5×2).

Absolutely! Our calculator supports all common scientific functions:
• Trigonometric: sin, cos, tan, and their hyperbolic counterparts sinh, cosh, tanh. Switch between DEG/RAD mode as needed.
• Logarithms: log (base-10 logarithm) and ln (natural logarithm, base e).
• Exponential: xⁿ (power), x² (square), 10ˣ (power of 10), and eˣ via the EXP button.
• Roots: √ (square root) and ∛ (cube root).
• Constants: π (pi ≈ 3.14159) and e (Euler's number ≈ 2.71828).

This calculator uses JavaScript's 64-bit double-precision floating-point arithmetic (IEEE 754 standard), providing approximately 15-17 significant digits of precision. This is comparable to most physical scientific calculators and is more than sufficient for academic, engineering, and everyday mathematical needs. For extremely high-precision requirements (beyond 15 digits), specialized arbitrary-precision software may be needed.