Scientific Calculator — Free Online Math, Trig, Stats & Converter

Free scientific calculator with trig, logs, stats, quadratic solver & base converter. History, share via WhatsApp, download PDF. No signup needed.

Perform advanced mathematical calculations with this free online scientific calculator that goes far beyond basic arithmetic. Compute trigonometric functions in degrees or radians, evaluate logarithms and exponentials, solve quadratic equations with full step-by-step solutions, run statistical analysis on data sets, convert between number bases and fractions, and explore number theory with prime checking and factorization. Every result is saved to a searchable history that you can share via WhatsApp, social media, or direct link, and export as a formatted PDF document. The calculator supports full keyboard input, memory functions, 17 mathematical and physical constants, and a comprehensive formula reference — all in your browser with no signup or download required.

How to Use This Scientific Calculator

Start typing or clicking buttons to build your expression. The calculator shows a live preview of your result as you type. Press the equals button or Enter to calculate and save to history. Switch between the five tabs for different capabilities: the main Calculator tab for basic arithmetic and memory functions, the Scientific tab for trig, log, and power functions, the History and Share tab to review, share, or export your calculations, the Math Tools tab for quadratic solving, statistics, base conversion, and number theory, and the Reference tab for formulas, constants, and keyboard shortcuts.

Type or Click

Enter numbers and operators using your keyboard or the on-screen buttons. Full keyboard shortcuts are supported.

Switch DEG/RAD

Toggle between degrees and radians for trigonometric calculations using the mode button at the top of the display.

Use Scientific Functions

Switch to the Scientific tab for sin, cos, tan, log, ln, powers, roots, and more.

Review History

All calculations are automatically saved. Click any history entry to reload it.

Share and Export

Share results via WhatsApp, link, or social media. Download all history as a formatted PDF.

Who Uses This Scientific Calculator?

This calculator is built for students, engineers, scientists, and professionals who need more than basic arithmetic. Whether you are solving homework problems, performing engineering calculations, analyzing data sets, or teaching math concepts, this tool provides the functions and features you need in a clean, intuitive interface that works on any device without installation.

Students

Solve algebra, trigonometry, and calculus problems with step-by-step quadratic equation solutions and fraction conversion.

Engineers

Perform technical calculations with trig functions, logarithms, and physical constants — all in degrees or radians mode.

Data Analysts

Run quick statistical analysis on data sets including mean, median, mode, standard deviation, and quartiles.

Programmers

Convert between binary, octal, decimal, and hexadecimal number systems instantly.

Teachers

Demonstrate mathematical concepts with the formula reference, trig identities, and exportable calculation history.

Understanding Order of Operations

This calculator follows the standard mathematical order of operations, also known as PEMDAS: Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right). When you type 2+3×4, the calculator correctly returns 14, not 20, because multiplication is performed before addition. You can always use parentheses to override the default order: (2+3)×4 gives 20. The expression parser handles nested parentheses, implicit multiplication (2π means 2 times π), and complex expressions like sin(45)+log(100)×2^3. Understanding this order is essential for getting correct results, especially in scientific calculations where small errors in expression formatting can lead to dramatically different answers.

Tips for Efficient Calculator Use

Mastering a few techniques will make your calculations faster and more accurate. These tips apply whether you are a student working through problem sets or a professional performing daily calculations.

Use Keyboard Shortcuts

Type directly on your keyboard for the fastest input. Press Enter for equals, Escape to clear, Backspace to delete.

Use Memory Functions

Store intermediate results with M+ and recall them with MR. This eliminates the need to retype long numbers.

Check the Preview

The live preview below the expression shows your result as you type, catching errors before you press equals.

Save to History

Every calculated result is saved automatically. You can click any history entry to reload the expression.

Share via Link

Generate a shareable URL that includes your expression and mode. Recipients see the exact same calculation.

Online vs Physical Scientific Calculator

Physical scientific calculators cost between $15 and $200 and are limited to the functions built into their firmware. This online calculator offers more functions than most physical models, works on any device with a browser, and includes features no physical calculator can match: shareable history, PDF export, WhatsApp sharing, live result preview, and a constantly expanding reference library. The trade-off is that you need internet access, but since this tool runs entirely in your browser, it works offline after the initial page load.

Cost

Free forever vs $15-$200 for a physical calculator with fewer features.

Sharing

Share results via WhatsApp, social media, or PDF — impossible with a physical calculator.

Updates

New features and improvements are added regularly. Physical calculators never get updates.

Accessibility

Works on phones, tablets, and computers. No batteries, no carrying, no forgetting it at home.

Frequently Asked Questions

Common questions about using this scientific calculator for math, engineering, and educational purposes.

Supported Functions

This calculator supports a comprehensive set of mathematical functions organized by category. Every function works with the expression parser and supports nested expressions.

Supported Mathematical Functions

Category	Functions	Example
Trigonometry	sin, cos, tan, asin, acos, atan	sin(45) = 0.707
Hyperbolic	sinh, cosh, tanh, asinh, acosh, atanh	sinh(1) = 1.175
Logarithms	ln, log, log2	log(100) = 2
Powers	x^y, x², x³, 10^x, 2^x	2^10 = 1024
Roots	√, ∛	√(144) = 12
Rounding	ceil, floor, round, abs, sign	round(3.7) = 4
Combinatorics	n!, nPr, nCr	5! = 120
Statistics	mean, median, mode, σ, variance	Full stats panel

Common Calculator Mistakes

Even experienced users make these common errors when using scientific calculators. Being aware of them helps you avoid incorrect results and wasted time.

Wrong Angle Mode

Forgetting to switch between DEG and RAD is the most common error. Always check the mode indicator before trig calculations.

Missing Parentheses

sin(2)×3 is not the same as sin(2×3). Use parentheses liberally to ensure correct order of operations.

Implicit Multiplication Errors

2π works, but 2sin(30) might not parse as expected. Use 2×sin(30) for safety.

Division Ambiguity

1/2×3 is (1/2)×3 = 1.5, not 1/(2×3) = 0.167. Add parentheses to make your intent clear.

Factorial Overflow

170! is the largest factorial JavaScript can represent. Anything larger returns Infinity.