What is a Scientific Calculator?

A Scientific Calculator extends basic arithmetic with advanced mathematical functions essential for science, engineering, and higher math: trigonometric functions (sin, cos, tan), inverse trig (asin, acos, atan), logarithms (log, ln), exponentials, square root, factorial, mathematical constants (π, e). Used by: students in algebra/trig/calculus classes, engineers calculating loads and stresses, scientists computing experimental results, statisticians working with formulas, programmers prototyping algorithms, anyone needing more than +/-×/÷ capability. Type any mathematical expression using functions and operators — calculator parses and evaluates.

How to use this tool

1. Type expression — Use functions: sin(x), cos(x), log(x), sqrt(x), etc. Constants: pi, e.
2. Click Calculate — Expression parsed and evaluated using JavaScript's Math library.
3. View result — Decimal output with 10-digit precision.
4. Modify and recalculate — Edit expression to explore variations.

Supported functions

• Trig (radians): sin, cos, tan, asin, acos, atan
• Logarithms: log (base 10), ln (natural log)
• Exponents: exp(x) = e^x, sqrt(x), x^y or pow(x,y)
• Rounding: floor, ceil, round, abs
• Factorial: n! or factorial(n)
• Constants: pi (3.14159…), e (2.71828…)

For degree-based trig: convert first: sin(45 * pi / 180) gives sin(45 degrees).

Examples

• Pythagorean: sqrt(3^2 + 4^2) = 5
• Circle area: pi * 5^2 = 78.54
• Compound interest: 1000 * (1.05)^10 = 1628.89
• Trig in degrees: sin(30 * pi / 180) = 0.5
• Natural log: ln(e^3) = 3
• Factorial: 10! = 3,628,800

Tips & best practices

• Trig functions use radians — convert degrees: deg * pi / 180
• Use parentheses generously to avoid order-of-operations confusion
• log() is base 10; ln() is natural log (base e)
• For statistical calculations, use specialized Statistics Calculator
• Constants 'pi' and 'e' are case-sensitive (lowercase)

Limitations & notes

Tool uses JavaScript's native Math object — standard functions only. No symbolic math (can't simplify expressions algebraically). No matrix operations. No complex numbers. Numerical precision limited to JavaScript double (about 15 significant digits). For symbolic math: Wolfram Alpha; for matrices: NumPy/MATLAB.

Frequently Asked Questions

Why does sin(90) = 0.89 instead of 1?

Tool uses radians (math standard). sin(90 radians) ≠ sin(90 degrees). For 90 degrees: sin(90 * pi / 180) = 1.

Can I use this for calculus?

Numerical evaluation yes. Symbolic differentiation/integration no — use Wolfram Alpha or specialized tools.

Maximum precision?

About 15 significant digits (JavaScript double precision). For higher precision, need libraries like BigDecimal in Java or decimal in Python.

Trig in degrees option?

Not built in — convert manually with * pi / 180. Future versions may add degree mode toggle.

Why does my factorial fail?

JavaScript safe integer limit: 170! is the largest exactly representable. 171! overflows to Infinity.

Related tools

Logarithm Calculator · Factorial Calculator · Statistics Calculator