Solve complex math problems in seconds! From basic arithmetic to advanced functions like sin, log, roots, and factorials, this free online scientific calculator handles it all with speed and precision.

Designed with a clean, modern interface, it works perfectly on any device. Whether you’re a student, engineer, or just solving everyday math problems, this calculator makes calculations fast, simple, and error-free.

Scientific Calculator – Complete User Guide

Our Advanced Scientific Calculator is designed to handle everything from simple arithmetic to complex scientific functions. Below is a detailed guide explaining each button and feature.

1. Display Section

• Previous Operand: Shows the previous number or result of your last operation. Useful when performing calculations in sequence.
• Current Operand: Shows the number you are currently entering or the result of the calculation.
• Mode Indicator (DEG/RAD): Shows whether trigonometric calculations are in degrees (DEG) or radians (RAD).

2. Number Buttons

• 0–9: Standard digits for entering numbers.
• . (decimal point): Used for decimal numbers, e.g., 3.14.

Tip: The calculator prevents multiple decimal points in the same number automatically.

3. Basic Operators

• + (Addition): Adds two numbers.
• – (Subtraction): Subtracts one number from another.
• × (Multiplication): Multiplies two numbers.
• / (Division): Divides one number by another. Shows Error if dividing by 0.

4. Equals and Clear

• = (Equals): Executes the current operation and displays the result.
• AC (All Clear): Resets the calculator completely to 0.

5. Function Buttons

These buttons perform scientific operations:

• sin, cos, tan: Calculate the sine, cosine, and tangent of the current number. Works in DEG or RAD mode.
• asin, acos, atan: Inverse trigonometric functions; calculates angle from ratio.
• Deg/Rad: Switches between degrees and radians for trigonometric functions.
• π: Inserts the value of π (approximately 3.14159).
• e: Inserts Euler’s number (≈ 2.71828).
• x² (square): Squares the current number.
• x³ (cube): Cubes the current number.
• xʸ (power): Raises a number to the power of another. Example: 2 xʸ 3 = 8.
• √x (square root): Returns the square root.
• 3√x (cube root): Returns the cube root.
• y√x (nth root): Calculates the y-th root of x.
• eˣ: Exponent with base e.
• 10ˣ: Exponent with base 10.
• ln: Natural logarithm (logarithm base e).
• log: Common logarithm (logarithm base 10).
• 1/x (reciprocal): Returns the reciprocal of a number (1 divided by the number).
• % (percent): Converts number to a percentage. Example: 50 → 0.5.
• n! (factorial): Multiplies all whole numbers from 1 up to the current number. Example: 5! = 5×4×3×2×1 = 120.
• ± (plus-minus): Changes the sign of the current number (+ ↔ -).
• RND (round): Rounds the number to the nearest integer.
• EXP (scientific notation): Allows entering numbers in scientific notation (e.g., 1.23 × 10⁴).

6. Memory Functions

• M+: Adds the current number to memory.
• M-: Subtracts the current number from memory.
• MR (Memory Recall): Retrieves the stored number from memory.
• Ans: Recalls the last answer.
• Back: Deletes the last digit entered.

Tip: Memory functions are useful for multi-step calculations where you need to store intermediate results.

7. Parentheses

• ( and ): Allows grouping of numbers or operations.
• Example: (2+3)×4 ensures addition happens before multiplication.

8. How to Perform Common Calculations

1. Basic Addition:
   Enter 5 + 3 = → Result: 8
2. Using Trigonometry (Degrees):
   Enter sin 30 → Result: 0.5
3. Power Calculation:
   Enter 2 xʸ 5 = → Result: 32
4. Percent Conversion:
   Enter 50 % → Result: 0.5
5. Factorial:
   Enter 6 n! → Result: 720
6. Using Memory:
   Enter 100 M+, then 50 M+, then MR → Result: 150

9. Keyboard Shortcuts

• Numbers 0–9 → Number keys
• Decimal . → Decimal point
• +, -, *, / → Operators
• Enter or = → Equals
• Backspace → Back/Delete
• Escape → All Clear

10. Notes & Tips

• Division by 0 returns Error.
• Factorials only work for whole numbers ≥ 0.
• Trigonometric calculations default to degrees; use Deg/Rad button to switch.
• Exponential notation allows very large or very small numbers to be handled easily.
• Use parentheses for complex expressions to control the order of operations.

✅ Summary:
This calculator is perfect for students, engineers, teachers, or anyone solving advanced math problems. It’s fast, accurate, and free, with all scientific operations in one interface.