What does the Scientific Calculator do?

The Scientific Calculator solves the common mathematics and arithmetic question: trig, log, exp. Enter your numbers on the left, the answer updates instantly on the right — no submit button, no signup.

Is the Scientific Calculator free to use?

Yes. Every calculator on CalcMaster is free, has no usage caps, requires no signup, and shows no ads. The site is open-source-friendly and supported entirely by the author.

Does the Scientific Calculator work on mobile?

Yes. CalcMaster is fully responsive and installable as a PWA — on Android tap the browser menu → "Add to Home Screen"; on iOS Safari → Share → "Add to Home Screen". After installing, the Scientific Calculator works offline.

Where is my input stored?

Nowhere by default. Your inputs live in your browser's memory while you're on the page; a copy of your recent calculations is saved to localStorage on your device so the History page works. Nothing is sent to a server unless you explicitly enable cloud sync.

Can I trust the formula in the Scientific Calculator?

The math is sourced from peer-reviewed and standard public formulas; you can read the formula in the result card. For decisions involving real money or health, always cross-verify with a qualified professional — calculators are educational, not advice.

Scientific Calculator

What is a scientific calculator?

A scientific calculator extends the basic four-function calculator with trigonometry, logarithms, exponents, square roots, parentheses, constants (π, e), and proper order of operations (BODMAS). It's what you used in high school and engineering college — except now it lives in your browser and runs anywhere.

CalcMaster's scientific calculator parses full expressions like sin(45°)² + log(1000) and evaluates them with the correct precedence. No more clicking buttons one at a time hoping the operator order works out.

How is order of operations (BODMAS) handled?

BODMAS / PEMDAS:

1. Brackets / Parentheses
2. Exponents / Powers / Roots
3. Multiplication and Division (left to right)
4. Addition and Subtraction (left to right)

The Scientific calculator uses mathjs under the hood — the same expression-parsing library used by Wolfram Alpha-style tools — so precedence is always correct.

Example:

Expression:  2 + 3 × 4²
Step 1 (exponent):  2 + 3 × 16
Step 2 (multiplication):  2 + 48
Step 3 (addition):  50

Compare to the Basic Calculator which would compute (2+3) × 4² = 5 × 16 = 80 — left-to-right immediate mode without precedence.

Worked example: physics homework

Compute the velocity at impact for a stone dropped from 50 m:

v = sqrt(2 × 9.81 × 50)
  = sqrt(981)
  = 31.32 m/s

In CalcMaster: type sqrt(2 * 9.81 * 50) → press = → get 31.32.

For more complex physics: type 0.5 * 70 * (15^2) → kinetic energy of a 70 kg cyclist at 15 m/s = 7,875 J.

Functions supported

Arithmetic and grouping

Operator	Meaning
`+` `-` `*` `/`	Standard four-function
`^`	Exponent (2^3 = 8)
`( )`	Parentheses for grouping
`!`	Factorial (5! = 120)
`%`	Percentage (50% = 0.5)

Trigonometry

Function	Description
`sin(x)`, `cos(x)`, `tan(x)`	Standard trig (input in radians by default)
`asin(x)`, `acos(x)`, `atan(x)`	Inverse trig
`sinh(x)`, `cosh(x)`, `tanh(x)`	Hyperbolic variants

Degree mode: append deg — e.g. sin(45 deg) returns 0.7071.

Logarithms and exponents

Function	Meaning
`log(x)`	Common log (base 10)
`log(x, base)`	Log to a custom base
`ln(x)`	Natural log (base e)
`exp(x)`	e raised to x
`e`	Euler's number ≈ 2.71828
`pi`	π ≈ 3.14159

Roots

Function	Meaning
`sqrt(x)`	Square root
`cbrt(x)`	Cube root
`nthRoot(x, n)`	n-th root

Other

Function	Meaning
`abs(x)`	Absolute value
`round(x)`	Round to nearest integer
`floor(x)`, `ceil(x)`	Floor / ceiling
`min(a, b, …)`, `max(a, b, …)`	Min / max of inputs

Worked example: compound trig

Compute sin²(30°) + cos²(30°) (which should equal 1, the Pythagorean identity):

Expression: sin(30 deg)^2 + cos(30 deg)^2
Step 1:  0.5^2 + 0.866^2
Step 2:  0.25 + 0.75
Result:  1.0  ✓

Components and inputs explained

Expression input

A single text field where you type the full expression. Use parentheses generously — they cost nothing and prevent precedence surprises.

Live preview

As you type, CalcMaster shows the partial expression. Errors (mismatched parentheses, undefined functions) are flagged inline before you press =.

Keypad (mobile)

On mobile, the keypad shows the most-used functions: sin, cos, tan, log, ln, sqrt, ^, (, ), π, e. Tap to insert at cursor.

Result history

Every evaluated expression is saved to your local history. Reuse previous answers with ans (refers to the last result).

When to use Scientific vs other calculators

Need	Use
Add/subtract a few numbers	Basic
Multiple operations in one expression with precedence	Scientific
Trig, log, exp, roots	Scientific
Compound interest math	Compound Interest
Statistical mean/median/stddev of a list	Statistics
Quadratic roots	Quadratic Solver
Fraction arithmetic	Fraction Calculator
Base conversion (binary/hex)	Number System
Matrix operations	Matrix Calculator
Permutations and combinations	P & C Calculator

Common school-and-college applications

Subject	Examples
Algebra	Solve `2x + 5 = 17` → type `(17 - 5) / 2` → 6
Trigonometry	Heights and distances, angle problems, ship/aircraft navigation
Physics — kinematics	`v = u + at`, projectile range/height, free fall
Physics — energy	`KE = 0.5 mv²`, `PE = mgh`, work and power
Chemistry	Stoichiometry, pH = `-log(H+)`, molarity dilutions
Engineering	Beam stress, electrical impedance (`sqrt(R² + X²)`), thermal calcs
Statistics	z-scores, simple probability, normal-curve values

Common mistakes

Forgetting parentheses around the angle. sin 45 doesn't work; use sin(45).
Mixing radians and degrees. Default is radians. Use deg suffix or pi/180 conversion.
Implicit multiplication. 2pi doesn't always work; use 2 * pi.
Floating-point quirks. sin(pi) returns 1.2246e-16 (very close to 0 but not exactly 0). Treat very small numbers as zero in physical problems.
Negative exponents. Use 2^-3 or 1/2^3, both work.

Considerations

Default angle unit is radians. If you're doing degree-based geometry, append deg: cos(60 deg).
Mathjs uses ECMAScript-style precedence. Right-associative ^ (so 2^3^2 = 2^9 = 512, not 8^2 = 64).
Implicit multiplication isn't universal. 2(3+4) works in mathjs but other tools may require 2*(3+4).
Pre-defined variables: pi, e, Infinity, NaN. Don't override these.

Limitations

The scientific calculator parses expressions, not equations. To solve 2x + 5 = 17 for x, use the Quadratic Solver or rearrange manually.
No symbolic math (can't simplify (x + 1)(x - 1) to x² − 1).
No graphing (use Desmos / GeoGebra for plots).
No matrix inputs in this calculator — use Matrix Calculator.
No statistics-list inputs (mean of a paste of numbers); use Statistics.
Doesn't handle complex numbers (no i). Use Wolfram Alpha for complex-arithmetic problems.

Related calculators

Basic Calculator — immediate-mode arithmetic
Quadratic Solver — roots of ax² + bx + c
Statistics — mean / median / stddev
Logarithm — log_b(x) with base picker
Permutation & Combination — nPr and nCr
Matrix Calculator — matrix arithmetic
Number System — base conversion
Fraction — fraction arithmetic

Final note. A scientific calculator is the workhorse of homework, engineering, and serious finance. Type one expression, evaluate once, move on. The mistake people make is reaching for the Basic calculator and clicking through operations one at a time — the Scientific calculator with a single typed expression is faster and less error-prone. Use parentheses generously; they cost zero and save grief.

Expression

Result