Scientific Calculator

Full scientific calculator with sin, cos, tan, log, ln, powers, roots, and more.

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Scientific Calculator Functions

Trig: sin, cos, tan and their inverses (asin, acos, atan) in degrees or radians
Logarithms: log (base 10), ln (natural log), and e^x
Powers & Roots: x², x³, xⁿ, √x, ∛x, nth root
Constants: π (pi = 3.14159…), e (Euler's number = 2.71828…)
Other: factorial (n!), modulo, absolute value, 1/x

What a Scientific Calculator Adds

Beyond the four basic operations, a scientific calculator handles the functions you meet in algebra, trigonometry, and science: powers and roots, logarithms, exponentials, and the trig functions sine, cosine, and tangent. It also respects the order of operations — parentheses, exponents, multiplication and division, then addition and subtraction — so a long expression evaluates the way it would on paper.

Degrees vs Radians

The single most common mistake with trig functions is the angle mode. Calculators can read an angle in degrees (a right angle is 90) or radians (a right angle is π/2 ≈ 1.571). If sin(90) returns 0.894 instead of 1, you're in radian mode. Always check the mode before trusting a trig result.

Tips

Use parentheses generously to make your intent explicit, and remember that the negative sign and subtraction are different operations on most layouts. For mean and standard deviation, the statistics calculator is purpose-built.

Frequently Asked Questions

What is the difference between radians and degrees?

Radians and degrees are two units for measuring angles. A full circle = 360° = 2π radians. To convert: degrees × π/180 = radians. Most programming and scientific work uses radians; everyday use prefers degrees.

What does the modulo operation do?

Modulo (mod, %) returns the remainder after division. Example: 17 mod 5 = 2 because 17 = 3×5 + 2. It's widely used in programming for things like checking even/odd numbers or wrapping values.

What is the difference between log and ln?

log (common logarithm) uses base 10: log(100) = 2. ln (natural logarithm) uses base e (≈2.718): ln(e) = 1. Scientific calculators use ln for natural log and log for base-10 log.