Scientific Calculator

Scientific Calculator Online - Advanced Math Tool

This free online scientific calculator provides powerful mathematical computation capabilities directly in your web browser. Perform complex calculations including trigonometric functions, logarithms, exponentials, complex numbers, and more - no installation required.

DEG

GRAD

RAD

Ans = 0

sincostansinhcoshC

sin⁻¹cos⁻¹tan⁻¹tanhlogln

√∛x²xʸeˣabs

πei()←

789÷n!mod

456×1/xAns

123-10ˣAC

000.+±=

Looking for basic calculations? Go to Simple Calculator →

Frequently Asked Questions

What is a scientific calculator used for?

A scientific calculator performs advanced mathematical operations including trigonometry (sin, cos, tan), logarithms (log, ln), exponentials (e^x, 10^x), complex numbers, factorials, and statistical functions. It’s essential for algebra, calculus, physics, chemistry, engineering, and advanced mathematics.

How do I use trigonometric functions?

First, select your angle mode (DEG for degrees, RAD for radians, or GRAD for gradians) in the settings. Then type your angle value and click the desired function (sin, cos, or tan). For example, sin(30) in DEG mode equals 0.5.

What is the difference between DEG, RAD, and GRAD?

• DEG (Degrees): Standard angle measurement (circle = 360°). Used in everyday applications and basic trigonometry.
• RAD (Radians): Mathematical angle measurement (circle = 2π). Used in calculus and advanced mathematics.
• GRAD (Gradians): Metric angle measurement (circle = 400 grad). Used in surveying and some European engineering.

How do complex numbers work in this calculator?

Type complex number expressions using ‘i’ for the imaginary unit. Examples: 3+4i, (2-i)*(1+i), sqrt(-4). The calculator automatically handles complex arithmetic and displays results in standard a+bi format.

What functions does a scientific calculator have?

This scientific calculator includes:

• Basic operations (+, -, ×, ÷)
• Trigonometric functions (sin, cos, tan, asin, acos, atan)
• Hyperbolic functions (sinh, cosh, tanh)
• Logarithms (log, ln) and exponentials (e^x, 10^x)
• Powers and roots (x², x³, xʸ, √, ∛)
• Factorial (n!), absolute value (abs), modulo
• Constants (π, e) and complex numbers (i)

Is this calculator suitable for exams?

This online scientific calculator provides the same functionality as physical exam-approved calculators. However, check your exam regulations - many institutions prohibit internet-connected devices during tests and require specific calculator models.

Can I use this for engineering calculations?

Absolutely. This scientific calculator handles all standard engineering calculations including trigonometry for structural analysis, logarithms for electrical engineering, complex numbers for AC circuit analysis, and exponential functions for signal processing.

Scientific Calculator Use Cases

Mathematics Education

• Algebra: Solving equations with exponents and roots
• Trigonometry: Calculating angles and triangle sides
• Calculus: Numerical approximations for derivatives and integrals
• Pre-calculus: Logarithmic and exponential functions
• Complex analysis: Operations with imaginary numbers
• Statistics: Factorial calculations for probability and permutations

Physics Applications

• Mechanics: Force, acceleration, and trajectory calculations
• Waves: Frequency, wavelength, and phase angle computations
• Thermodynamics: Exponential decay and Boltzmann equations
• Electromagnetism: AC circuit analysis with complex impedance
• Quantum mechanics: Wave function and probability calculations
• Relativity: Lorentz transformations and time dilation

Engineering Disciplines

• Civil Engineering: Structural load calculations and surveying angles
• Electrical Engineering: Power calculations, impedance, and frequency response
• Mechanical Engineering: Stress analysis and thermodynamic cycles
• Chemical Engineering: Reaction rates and equilibrium constants
• Computer Engineering: Binary, hexadecimal, and algorithm complexity
• Aerospace Engineering: Orbital mechanics and flight dynamics

Chemistry Calculations

• Stoichiometry: Mole calculations and chemical equations
• pH Calculations: Logarithmic concentration conversions
• Thermochemistry: Enthalpy and entropy calculations
• Kinetics: Reaction rate constants and half-lives
• Quantum chemistry: Orbital energy levels
• Electrochemistry: Nernst equation and cell potentials

Professional Applications

• Financial Analysis: Compound interest with exponential functions
• Data Science: Statistical calculations and logarithmic scaling
• Architecture: Angle calculations and geometric computations
• Research: Scientific data analysis and experimental calculations
• Quality Control: Statistical process control and standard deviation
• Surveying: Trigonometric distance and elevation measurements

How to Solve Common Problems

Trigonometry Problems

Finding triangle sides:

1. Set angle mode to DEG
2. Use sin, cos, or tan with known angle and side
3. Example: If angle=30° and hypotenuse=10, opposite side = 10×sin(30) = 5

Finding angles:

1. Use asin, acos, or atan (inverse functions)
2. Example: If opposite=3 and adjacent=4, angle = atan(3/4) ≈ 36.87°

Logarithm Problems

Exponential growth:

• Population doubling: Use ln(2)/rate to find time
• Compound interest: Use log for time calculations
• pH calculations: pH = -log[H+]

Solving exponential equations:

• If 2^x = 10, then x = log(10)/log(2) ≈ 3.32

Complex Number Problems

Electrical impedance:

• Combine resistors and capacitors: Z = R + iXc
• Example: (3+4i) + (2-i) = 5+3i Ω

AC circuit analysis:

• Voltage and current with phase angles
• Power calculations with complex arithmetic

Scientific Notation

Large numbers:

• Speed of light: 3×10^8 m/s
• Avogadro’s number: 6.022×10^23

Small numbers:

• Planck constant: 6.626×10^-34 J·s
• Electron mass: 9.109×10^-31 kg

Scientific Calculator vs Basic Calculator

When to Use a Scientific Calculator

• Working with angles and trigonometry
• Calculating logarithms or exponentials
• Solving equations with powers greater than 2
• Handling complex numbers
• Physics or engineering problems
• Chemistry calculations with scientific notation
• Advanced mathematics courses
• Statistical analysis with factorials

When a Basic Calculator is Sufficient

• Simple addition, subtraction, multiplication, division
• Percentage calculations
• Shopping and price comparisons
• Basic financial calculations
• Everyday arithmetic
• Elementary school math

Advanced Calculator Features

Memory and Ans Function

The Ans variable stores your previous calculation result, enabling multi-step problem solving:

1. Calculate intermediate result (e.g., sin(30) = 0.5)
2. Use Ans in next calculation (e.g., Ans × 10 = 5)
3. Chain multiple operations efficiently
4. Use AC button to reset memory

Keyboard Shortcuts for Faster Calculations

• Type numbers and operators directly
• Press Enter for equals
• Use standard math notation
• Functions auto-complete with parentheses

Working with Constants

• π (pi): Essential for circle calculations, trigonometry, and wave functions
• e (Euler’s number): Natural logarithm base, exponential growth, calculus
• Use these constants for precise scientific calculations

Scientific Calculator Best Practices

Accuracy Tips

1. Always check angle mode before trigonometric calculations
2. Use parentheses to ensure correct order of operations
3. Store intermediate results in Ans for multi-step problems
4. Verify units and conversions before calculating
5. Round final answers appropriately for your application

Common Mistakes to Avoid

• Forgetting to switch between DEG and RAD modes
• Missing parentheses in complex expressions
• Confusing log (base 10) with ln (natural log)
• Using degrees when radians are required (especially in calculus)
• Not clearing previous Ans values before new calculations

Efficiency Techniques

• Learn keyboard shortcuts for frequently used functions
• Use Ans variable to chain calculations
• Break complex problems into smaller steps
• Write down intermediate results for verification
• Practice mental estimation to catch input errors

Need basic arithmetic only? Try our Simple Calculator for everyday calculations including addition, subtraction, multiplication, division, and percentage operations.

This free online scientific calculator provides professional-grade mathematical computation for students, engineers, scientists, and researchers. Access advanced functions instantly in your browser without downloads, installation, or cost.

Features

Advanced Mathematical Functions

• Trigonometric Functions: sin, cos, tan, asin, acos, atan for angle calculations
• Hyperbolic Functions: sinh, cosh, tanh for advanced mathematics
• Logarithmic Functions: log (base 10), ln (natural logarithm) for exponential calculations
• Power Functions: x², xʸ, eˣ, 10ˣ for exponential operations
• Root Functions: √ (square root), ∛ (cube root) for root calculations
• Complex Numbers: Full support for imaginary unit (i) and complex arithmetic
• Mathematical Constants: π (pi), e (Euler’s number) for precise calculations
• Factorial: n! for combinatorics and probability
• Additional Operations: abs (absolute value), modulo, reciprocal (1/x)

Calculator Settings

• Angle Modes: Switch between degrees (DEG), gradians (GRAD), and radians (RAD)
• Memory Function: Ans variable stores previous results
• All Clear: AC button to reset calculator memory
• Keyboard Support: Type expressions and press Enter for quick calculations

How to Use This Scientific Calculator

Basic Operations

1. Number Entry: Click number buttons (0-9) or type directly
2. Operations: Use +, -, ×, ÷ for basic arithmetic
3. Calculate: Press = button or Enter key to evaluate expressions
4. Clear Functions: C clears expression, AC resets memory, ← removes last character

Advanced Functions

1. Trigonometry: Select angle mode (DEG/GRAD/RAD), then use sin/cos/tan buttons
2. Logarithms: Use log button for base-10 logarithms, ln for natural logarithms
3. Powers: Use x² for squaring, xʸ for custom powers, eˣ for exponentials
4. Complex Numbers: Type expressions like “3+4i” or use the i button
5. Ans Variable: Reuse previous calculation results in new expressions

Angle Mode Selection

• DEG (Degrees): For standard angle measurements (sin(90) = 1)
• RAD (Radians): For calculus and advanced mathematics (sin(π/2) = 1)
• GRAD (Gradians): For surveying and some engineering applications

Scientific Calculator Examples

Trigonometric Calculations

sin(30) = 0.5 (in DEG mode)
cos(π/3) = 0.5 (in RAD mode)
tan(45) = 1 (in DEG mode)
asin(0.5) = 30 (in DEG mode)

Logarithmic Calculations

log(100) = 2
ln(e) = 1
log(1000) = 3
ln(e^2) = 2

Complex Number Calculations

(3+4i) * (2-i) = 10+5i
sqrt(-1) = i
sqrt(-4) = 2i
(1+i)^2 = 2i
e^(i*π) + 1 = 0 (Euler's identity)

Power and Root Calculations

2^8 = 256
sqrt(16) = 4
cbrt(27) = 3
e^2 = 7.389...
10^3 = 1000

Advanced Mathematical Operations

5! = 120
abs(-7) = 7
1/4 = 0.25
8 mod 3 = 2
π * 2 = 6.283...

Using Ans for Sequential Calculations

5 * 5 = 25
Ans + 10 = 35
Ans / 7 = 5
sqrt(Ans) = 2.236...

Why Use This Online Scientific Calculator?

• Free and Accessible: No cost, no downloads, works in any modern web browser
• Comprehensive Functions: All essential scientific calculator features in one tool
• Complex Number Support: Handle advanced mathematics with imaginary numbers
• Multiple Angle Modes: Switch between degrees, radians, and gradians instantly
• Keyboard Friendly: Type expressions naturally with full keyboard support
• Memory Function: Ans variable preserves results for multi-step calculations
• Student-Friendly: Perfect for algebra, trigonometry, calculus, and physics homework
• Professional Grade: Reliable tool for engineering, science, and research applications
• Mobile Compatible: Works on desktop computers, tablets, and smartphones
• Always Available: Access powerful mathematical tools anytime, anywhere

Applications

Education

• Algebra: Solve equations, work with exponents and roots
• Trigonometry: Calculate angles, solve triangle problems
• Calculus: Evaluate limits, derivatives, and integrals numerically
• Physics: Perform scientific notation calculations, unit conversions
• Chemistry: Calculate molecular weights, stoichiometry
• Statistics: Compute factorials for probability and combinations

Professional Use

• Engineering: Design calculations, technical analysis
• Architecture: Angle calculations, structural measurements
• Computer Science: Algorithm analysis, computational mathematics
• Finance: Compound interest, exponential growth calculations
• Research: Scientific data analysis, experimental calculations

This scientific calculator online free tool provides everything students and professionals need for advanced mathematical operations, making it an essential resource for STEM education and technical work.