Free Scientific Calculator
Advanced calculator with trigonometric functions, logarithms, exponents, factorials, and memory. Toggle between degree and radian modes for trig calculations.
Scientific Calculator
Quick Reference
Trigonometric
- sin, cos, tan - Basic trig functions
- sin⁻¹, cos⁻¹, tan⁻¹ - Inverse trig
- DEG/RAD - Toggle angle mode
Functions
- log - Base 10 logarithm
- ln - Natural logarithm
- √ - Square root
- x^y - Power/exponent
- n! - Factorial
Constants
- π - Pi (3.14159...)
- e - Euler's number (2.71828...)
Memory
- MC - Memory clear
- MR - Memory recall
- M+ - Add to memory
- M- - Subtract from memory
How to Use the Scientific Calculator
Select Angle Mode
Choose between DEG (degrees) or RAD (radians) mode before performing trigonometric calculations. Use DEG for everyday angle measurements, RAD for calculus and physics problems.
Enter Numbers and Operations
Click the number buttons or use your keyboard to enter values. Use the operation buttons (+, -, ×, ÷, x^y) for calculations, or scientific functions (sin, cos, tan, log, ln, √) for advanced math.
Use Memory Functions
Store intermediate results using M+ to add to memory, M- to subtract, MR to recall stored values, and MC to clear memory. This is helpful for complex multi-step calculations.
Get Your Result
Press the equals button (=) to calculate your result. Use the C button to clear the display and start over, or the backspace button to correct mistakes.
Pro tip: Your data is processed entirely in your browser. Nothing is sent to any server, ensuring complete privacy.
About Scientific Calculators
A scientific calculator is an essential tool for students, engineers, scientists, and anyone working with advanced mathematics. Unlike basic calculators that only handle arithmetic, scientific calculators provide functions for trigonometry, logarithms, exponents, and more complex mathematical operations.
Key Features
- Trigonometric Functions: Calculate sine, cosine, tangent and their inverses in both degree and radian modes
- Logarithms: Common logarithm (base 10) and natural logarithm (base e) for scientific calculations
- Exponents & Roots: Calculate powers, square roots, and other exponential operations
- Constants: Quick access to π (pi) and e (Euler's number) for precise calculations
- Memory Functions: Store and recall values for complex multi-step calculations
Common Use Cases
Students
Solve homework problems in algebra, trigonometry, calculus, and physics. Calculate angles, verify identities, and work through complex equations step by step.
Engineers
Perform engineering calculations involving angles, forces, electrical circuits, and structural analysis. Memory functions help with iterative calculations.
Scientists
Calculate exponential growth/decay, statistical functions, and natural phenomena using logarithms and scientific notation.
Everyday Use
Calculate percentages, convert units, figure out tips, or solve any math problem that goes beyond simple arithmetic.
Frequently Asked Questions
What is a scientific calculator?
A scientific calculator is an advanced calculator that can perform mathematical operations beyond basic arithmetic. It includes trigonometric functions (sin, cos, tan), logarithms (log, ln), exponents, square roots, factorials, and mathematical constants like π and e.
What is the difference between DEG and RAD mode?
DEG (degrees) and RAD (radians) are two ways to measure angles. In DEG mode, a full circle is 360°. In RAD mode, a full circle is 2π radians (approximately 6.28). Most everyday calculations use degrees, while radians are common in calculus and physics.
How do I calculate powers and exponents?
Use the x^y button to calculate powers. Enter the base number, press x^y, then enter the exponent. For example, to calculate 2³, enter 2, press x^y, enter 3, and press equals to get 8.
What is the difference between log and ln?
log (common logarithm) uses base 10, meaning log(100) = 2 because 10² = 100. ln (natural logarithm) uses base e (approximately 2.718), and is commonly used in calculus, physics, and natural growth calculations.
How do I use the memory functions?
Memory functions store values for later use. MC clears memory, MR recalls the stored value, M+ adds the current display to memory, and M- subtracts the current display from memory. Memory persists until cleared or reset.
What is factorial (n!) and when is it used?
Factorial (n!) multiplies all positive integers from 1 to n. For example, 5! = 5×4×3×2×1 = 120. Factorials are used in probability, statistics, combinatorics, and calculating permutations and combinations.