Scientific Calculator
Calculate powers, roots, logarithms and trigonometric functions
Scientific calculator
Use 0–9, decimal point, +, −, *, / and Enter to calculate. Escape clears; Backspace deletes the last digit.
Choose RAD or DEG before trigonometric calculations.
MC clears memory, MR recalls it, MS stores, M+ adds and M− subtracts.
Select a history result to use it again.
Calculation history
Your calculations will appear here.
Ready. Use the keypad or your keyboard.
About Scientific Calculator
Our free Scientific Calculator covers the functions of a handheld scientific calculator. For trigonometric calculations, logarithms, exponentials, or factorials, it returns precise results on any device.
Designed for students, engineers, scientists, and professionals, this online scientific calculator features a full numeric keypad, scientific function buttons, memory storage, and a calculation history panel. Toggle between radians and degrees for trigonometric functions, and use built-in constants like pi and Euler's number for quick access.
The calculator supports keyboard shortcuts for rapid data entry and includes error handling for edge cases such as division by zero, invalid domain inputs for inverse trigonometric functions, and overflow protection for large exponentials. Nothing you enter is uploaded or stored.
Key Features
- Trigonometric functions: sin, cos, tan with radian and degree mode toggle
- Inverse trigonometric functions: asin, acos, atan
- Logarithmic functions: natural log (ln) and base-10 log
- Exponential functions: e^x, 10^x, and custom power (x^y)
- Square, cube, square root, and reciprocal operations
- Factorial function for integers up to 170
- Mathematical constants: pi and Euler's number (e)
- Memory functions: MC, MR, M+, M-, and MS for storing values
- Calculation history with timestamps and click-to-recall
- Full keyboard support including number keys, operators, Enter, Escape, and Backspace
How to Use the Scientific Calculator
- Enter numbers: Click the numeric buttons or use your keyboard (0-9) to enter values into the display.
- Choose an operation: Click a function button (sin, cos, log, etc.) for unary operations, or select an operator (+, -, x, /) for binary operations.
- Toggle angle mode: Click the RAD/DEG button to switch between radians and degrees before using trigonometric functions.
- Use memory functions: Store values with MS, recall with MR, and add or subtract from memory with M+ and M-.
- View history: Check the History panel on the right to review past calculations and click any entry to recall its result.
- Copy results: Click the Copy button next to the display to copy the current result to your clipboard.
Use Cases
- Math & physics homework: Solve trigonometric equations, logarithmic problems, and exponential expressions for school assignments.
- Engineering calculations: Perform technical computations for structural analysis, electrical circuits, and signal processing.
- Scientific research: Calculate statistical values, experimental results, and data transformations in laboratory settings.
- Financial analysis: Compute compound interest, exponential growth models, and logarithmic return calculations.
- Architecture & design: Calculate angles, trigonometric ratios, and geometric measurements for building plans.
- Programming & algorithm development: Verify mathematical logic, test edge cases, and prototype formula implementations.
- Teaching & tutoring: Demonstrate mathematical concepts in classrooms with real-time calculations and history tracking.
Frequently Asked Questions
What is the difference between RAD and DEG mode?
RAD (radians) and DEG (degrees) determine the unit used for trigonometric functions. Radians are the standard mathematical unit, while degrees are more intuitive for everyday angle measurements. Toggle between them by clicking the RAD/DEG button.
Why does the display show "Error"?
An "Error" result appears when an operation is mathematically undefined, such as dividing by zero, taking the square root of a negative number, or computing the logarithm of a non-positive value.
Can I use keyboard shortcuts?
Yes, the calculator supports full keyboard input: number keys (0-9), operators (+, -, *, /), Enter or = for equals, Escape to clear, and Backspace to delete the last digit.
What is the maximum factorial supported?
The factorial function supports integers from 0 to 170. 171! and above are too large to represent as a number, so the calculator returns an error instead.
Tips & Best Practices
- Check your angle mode: Always verify whether you need radians or degrees before performing trigonometric calculations.
- Use memory for multi-step problems: Store intermediate results with MS and recall them with MR to avoid retyping values.
- Review your history: The history panel lets you verify previous calculations and click to reuse results without recalculating.
- Leverage keyboard shortcuts: Using the keyboard is significantly faster than clicking buttons for extended calculation sessions.
- Use constants directly: Click the pi or e buttons to insert precise values instead of typing approximations manually.
- Clear vs. Clear Entry: Use C to reset everything or CE to clear only the current display entry while preserving ongoing operations.