Free Online Calculator

Scientific Calculator

A full scientific calculator with a keypad, brackets and degree/radian modes.

Last updated: Free, no sign-up Private — runs in your browser

Quick answer: using the scientific calculator

Type the whole expression and the answer updates as you go — sin(30) + 2^3 × √16 in degrees equals 32.5. Brackets and order of operations are handled for you.

Overview of the Scientific Calculator

This scientific calculator evaluates whole expressions rather than one operation at a time. Type or tap sin, cos, tan and their inverses, ln, log, √, powers (^), factorials (!), percentages, mod, π and e, with brackets to any depth, and switch between degrees and radians. The result updates as you type and is also shown in scientific notation.

It follows the standard order of operations (brackets, powers, multiplication and division, then addition and subtraction) and understands implicit multiplication such as 2π or 3(4 + 1). For specific tasks see the Log Calculator, Exponent Calculator, Root Calculator and Quadratic Formula Calculator.

How We Calculate

The calculator applies the standard method step by step.

  1. Type the expression or tap the keys: e.g. sin(30)+2^3*sqrt(16).
  2. The parser splits it into numbers, operators, functions and brackets — nothing is run as code.
  3. It evaluates brackets first, then functions, powers (right to left), multiplication/division and finally addition/subtraction.
  4. Trig functions use degrees or radians as chosen; inverse trig returns an angle in the same mode.
  5. The answer is cleaned of floating-point dust (so sin 30° is exactly 0.5).
order of operations: ( ) → functions → ^ → × ÷ → + −
Worked example — scientific calculator
ItemValue
Expressionsin(30) + 2^3 * sqrt(16)
Result32.5
Rounded to 6 decimal places32.5
Scientific notation3.25 × 10^1
Angle modeDegrees
Scientific calculator results
ExpressionResult
2 + 3 × 414
sin(30°)0.5
√144 + 5!132
log(1000) + ln(e²)5
2^101024
Exact trigonometric values for special angles
Anglesincostan
0°010
30°1/2√3/21/√3
45°√2/2√2/21
60°√3/21/2√3
90°10undefined

Scientific Calculator — Frequently Asked Questions

How do I use the scientific calculator?

Type an expression like 2^10 or sin(30), or tap the keys. The answer appears as you type; press = to see any error messages.

What is the difference between degree and radian mode?

Degrees split a circle into 360 parts, radians use π. sin(30) = 0.5 in degree mode, but sin(30) ≈ −0.988 in radian mode.

Which functions are supported?

sin, cos, tan, sec, csc, cot, asin, acos, atan, sinh, cosh, tanh, ln, log, log2, √, cbrt, exp, abs, floor, ceil, round, factorial (!), mod, min, max, nCr, nPr, gcd and more.

How do I enter a power or root?

Use ^ for powers (2^8) and sqrt( or the √ key for roots. root(27,3) gives a cube root.

What does the Ans key do?

It inserts your previous answer so you can keep calculating, for example ans*2.

Why does it say tan(90) is undefined?

In degree mode tan(90°) has no value — the function goes to infinity — so the calculator reports an error instead of a huge number.

How is the scientific calculator calculated?

It uses the standard method: order of operations: ( ) → functions → ^ → × ÷ → + − The full working and a worked example are shown on this page.

How accurate is this calculator?

Decimal results use standard double-precision arithmetic (about 15–16 significant digits). Tools that work with whole numbers — big numbers, factors, bases, combinations — use exact integer arithmetic, so no digits are lost.

Can I use it for homework or exams?

Yes for checking your work and learning the method. The steps and formula are shown so you can understand the answer, but follow your teacher's rules about calculators in exams.

Is my data stored?

No. Everything is calculated in your browser and nothing you enter is uploaded or saved.

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