Scientific Calculator
A full-featured scientific calculator in your browser. Trig functions, logarithms, powers, factorial, memory, and keyboard support.
How to use Scientific Calculator
The scientific calculator in the calculator category is a full-featured expression evaluator supporting arithmetic, trigonometry, logarithms, factorials, constants (π, e), exponents, memory functions and parentheses. Switch between degree and radian modes for trigonometric functions. Results can be copied for use in spreadsheets or other tools.
- Click buttons or type expressions on the keypad.
- Toggle DEG/RAD mode before entering trigonometric functions.
- Use M+/MR/MC to store, recall and clear memory.
- Press = to evaluate; C/AC to clear entry or all.
Your data never leaves your device — 100% private processing.
Expression evaluation and order of operations
Expressions are evaluated left-to-right with standard operator precedence: parentheses first, then exponents, then multiplication/division, then addition/subtraction (PEMDAS/BODMAS). Parentheses override precedence; use them to ensure complex expressions compute correctly. Note that this calculator evaluates left-to-right for simple chains — use parentheses whenever operator precedence matters.
Scientific notation and large numbers
Scientific notation expresses very large or very small numbers as a coefficient multiplied by a power of ten: 1.5 × 10⁶ = 1,500,000. Use the EXP button to enter the exponent. Results exceeding the display precision are shown in scientific notation automatically. This is essential for physics calculations (Avogadro's number: 6.022 × 10²³), chemistry (molar mass) and engineering (electromagnetic frequencies).
| Constant | Symbol | Approx. value | Used in |
|---|---|---|---|
| Pi | π | 3.14159265… | Circles, trigonometry |
| Euler's number | e | 2.71828182… | Exponential growth, logarithms |
| Golden ratio | φ | 1.61803398… | Design, geometry |
| Square root of 2 | √2 | 1.41421356… | Pythagorean theorem, diagonals |
| Euler's constant | γ | 0.57721566… | Number theory, integrals |
Glossary
- PEMDAS
- Order of operations: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.
- Trigonometry
- The branch of mathematics studying relationships between angles and side lengths in triangles.
- Scientific notation
- A way of expressing numbers as a coefficient × 10^exponent, used for very large or small values.
- Radian
- The SI unit of angle; 2π radians = 360 degrees.
Related reading
Frequently Asked Questions
Get weekly tool tips & updates
New tools, power-user tips, and productivity hacks — delivered free every Friday.
No spam, ever. Unsubscribe with one click.
Why use Scientific Calculator?
- Step-by-step explanations alongside every calculation
- Printable or shareable result summaries
- Works entirely offline in your browser
- Built-in input validation prevents common mistakes
Common use cases
- Calculate loan repayments before applying
- Check compound interest on savings accounts
- Estimate tax owed before filing
- Work out break-even point for a new business
- Plan retirement savings contributions
Related Calculators
Percentage Calculator
Calculate percentages instantly. Find what X% of a number is, what percentage X is of Y, or calculate percentage change.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Supports metric (kg/cm) and imperial (lbs/ft+in) units. Free online BMI calculator.
Loan Calculator
Calculate your loan monthly payment, total interest, and payoff. Compare rates and terms instantly with this free online personal loan calculator.
Age Calculator
Calculate your exact age in years, months, and days. Find your next birthday countdown and day of birth. Free online age calculator.
Compound Interest Calculator
Calculate compound interest growth for any investment. See how your money grows over time with different compounding frequencies.
Tip Calculator
Calculate tips and split bills. Enter your bill amount, choose a tip percentage, and split the total among multiple people.
Explore all Calculators.