Advanced Calculator with Equation Solver & Matrix Calculator
✓ Equation Solver - Linear & Quadratic
✓ Matrix Calculator - 2×2 & 3×3 matrices
✓ Unit Converter - 6 categories, 40+ units
✓ 20+ Functions - Trig, Log, Constants
Trig • Equations • Statistics • Unit Converter
Solve linear equations (ax + b = 0) and quadratic equations (ax² + bx + c = 0) instantly with step-by-step solutions showing real, repeated, or complex roots with discriminant calculations.
Perform matrix operations including addition, subtraction, multiplication, determinant calculation, and transpose for 2×2 and 3×3 matrices with instant results.
Convert between 40+ units across 6 categories: Length, Weight, Temperature, Area, Volume, and Time with precise conversion factors and formulas.
A Scientific Calculator is an advanced computational tool designed for complex mathematical operations beyond basic arithmetic providing comprehensive functionality for students engineers scientists researchers with trigonometric functions including sine cosine tangent inverse trig functions supporting both degree and radian angle modes essential for geometry physics calculus applications logarithmic functions natural logarithm base-e logarithm common logarithm base-10 used extensively in chemistry biology exponential growth decay problems mathematical calculations power exponential square root cube root nth root factorial permutation combination operations statistical functions mean median mode standard deviation variance probability calculations hyperbolic functions sinh cosh tanh used in advanced mathematics engineering physics problems complex number arithmetic real imaginary parts polar rectangular conversions matrix operations linear algebra computations determinants eigenvalues eigenvectors solving systems of linear equations essential for computer graphics machine learning quantum mechanics applications equation solving capabilities linear equations single variable quadratic equations with discriminant analysis showing real repeated complex solutions polynomial equations higher degree numerical methods root finding algorithms unit conversions across multiple categories length converting meters kilometers miles feet inches centimeters millimeters weight mass converting kilograms grams pounds ounces tons temperature Celsius Fahrenheit Kelvin conversions area volume time speed energy power pressure conversions making it indispensable tool for scientific engineering educational professional applications.
Our Free Scientific Calculator 2025 offers unique advanced features unavailable in standard calculators including built-in equation solver handling linear equations ax plus b equals zero single variable solving quadratic equations ax squared plus bx plus c equals zero using quadratic formula discriminant analysis real complex solutions displayed clearly matrix calculator supporting 2x2 3x3 matrices performing addition subtraction multiplication determinant calculation transpose operations essential for linear algebra engineering mathematics physics quantum mechanics computer science applications unit converter comprehensive tool supporting 40 plus units across 6 categories length weight temperature area volume time with accurate conversion factors formulas instant bidirectional conversion saving time reducing errors mathematical constants library including pi value 3.14159 Euler number e 2.71828 golden ratio phi 1.61803 speed of light c gravitational constant G Planck constant h Avogadro number NA accessible single click insertion calculation history tracking last 20 calculations timestamps expressions results reusable clickable entries reviewing work checking complex multi-step calculations memory functions MC MR M plus M minus for storing recalling intermediate results reducing need paper notes external storage keyboard shortcuts support faster input power users numbers operations Enter Escape Backspace keys functioning intuitively angle mode switching DEG RAD GRAD modes important for trigonometric calculations ensuring accuracy different contexts responsive mobile-friendly design working seamlessly smartphones tablets desktops touch keyboard input dark mode display reducing eye strain night calculations making it most comprehensive feature-rich free scientific calculator available online 2025 perfect for high school students college university students engineers scientists professionals researchers educators anyone needing advanced mathematical computational capabilities completely free no registration required no advertisements no limitations full functionality accessible everyone forever.
sin(30°) = 0.5, sin(π/6) = 0.5
cos(60°) = 0.5, cos(π/3) = 0.5
tan(45°) = 1, tan(π/4) = 1
log(100) = 2, log(1000) = 3
ln(e) = 1, ln(e²) = 2
10^2 = 100, e^1 = 2.71828
2^3 = 8, 5^2 = 25
√16 = 4, √25 = 5
4² = 16, 7² = 49
| Symbol | Name | Value | Usage |
|---|---|---|---|
| π | Pi | 3.14159... | Circle calculations, trigonometry |
| e | Euler's Number | 2.71828... | Natural logarithms, exponential growth |
| φ | Golden Ratio | 1.61803... | Geometry, art, architecture |
| c | Speed of Light | 299,792,458 m/s | Physics, relativity |
| G | Gravitational Constant | 6.674×10⁻¹¹ | Gravity calculations |
| h | Planck Constant | 6.626×10⁻³⁴ | Quantum mechanics |
| NA | Avogadro Number | 6.022×10²³ | Chemistry, mole calculations |
To use: 1) Enter numbers using buttons or keyboard, 2) Select operations (+, -, ×, ÷, ^), 3) Use scientific functions (sin, cos, tan, log, ln, √), 4) Press = or Enter to calculate. Supports parentheses for complex expressions and angle modes (DEG/RAD).
DEG (Degree) mode uses angles in degrees (0-360°) for everyday calculations and geometry. RAD (Radian) mode uses angles in radians (0-2π) for advanced mathematics, calculus, and physics. Example: sin(90) in DEG = 1, but sin(90) in RAD ≠ 1. Always check your mode!
To solve ax² + bx + c = 0: 1) Click 'Equation Solver', 2) Select 'Quadratic', 3) Enter coefficients a, b, c, 4) Click 'Solve'. Shows two real solutions (discriminant > 0), one solution (= 0), or complex solutions (< 0) with real/imaginary parts.
Supports: Addition (A + B), Subtraction (A - B), Multiplication (A × B), Determinant (|A|), Transpose (Aᵀ) for 2×2 and 3×3 matrices. Enter elements, select operation, click Calculate for instant results with accurate computation.
Click 'Unit Converter', select category (Length, Weight, Temperature, Area, Volume, Time), choose From/To units, enter value, click Convert. Supports 40+ units: meters, km, pounds, kg, Celsius, Fahrenheit, liters, gallons, seconds, hours.
Available: π (Pi) = 3.14159, e (Euler) = 2.71828, φ (Golden ratio) = 1.61803, c (Speed of light) = 299,792,458 m/s, G (Gravity) = 6.674×10⁻¹¹, h (Planck) = 6.626×10⁻³⁴, NA (Avogadro) = 6.022×10²³. Click 'Constants' to insert.
Yes! 0-9 = digits, +, -, *, / = operations, Enter/= = calculate, Escape = clear (AC), Backspace = delete last character, . = decimal point. Makes calculations faster and efficient for power users.
MC (Memory Clear) = reset to 0, MR (Memory Recall) = display stored value, M+ (Add) = add current result, M- (Subtract) = subtract current result. Useful for multi-step calculations without writing intermediate results. Shows as 'M: X' in display.
Yes! Click 'History' to view last 20 calculations with timestamps. Each shows expression, result, time. Click any entry to reuse the result. Clear with trash icon. Perfect for reviewing complex calculations and checking work.
100% free with no registration! No ads, no limits, no premium features. All advanced features (equation solver, matrix calculator, unit converter, constants, history) completely free forever. Works on all devices (mobile, tablet, desktop) with responsive design.
Our Free Scientific Calculator 2025 is the most advanced comprehensive feature-rich online calculator designed for students engineers scientists professionals offering unparalleled computational power with 20 plus built-in mathematical functions trigonometric sine cosine tangent calculations supporting both degree radian angle modes essential for geometry physics engineering applications logarithmic natural log common log functions critical for chemistry biology exponential problems power exponential square root calculations matrix operations 2x2 3x3 matrices addition subtraction multiplication determinant transpose computations equation solving linear quadratic equations with discriminant analysis real complex solutions unit conversion 40 plus units across 6 categories length weight temperature area volume time mathematical constants pi Euler golden ratio speed of light gravitational Planck Avogadro constants calculation history tracking last 20 computations timestamps memory functions keyboard shortcuts responsive mobile design making it most powerful user-friendly scientific calculator available online completely free without registration limits advertisements serving millions of students professionals worldwide updated for 2025 academic professional standards.
Perfect for high school students learning algebra geometry trigonometry requiring scientific functions for homework assignments tests understanding mathematical concepts building problem-solving skills, college university students studying calculus linear algebra differential equations engineering courses physics chemistry mathematics requiring advanced computational tools matrix operations equation solvers for coursework projects research, engineers professionals working on design calculations structural analysis electrical circuits mechanical systems requiring precise mathematical computations scientific functions unit conversions, scientists researchers conducting experiments data analysis statistical calculations requiring logarithmic exponential functions constants for physics chemistry biology research, educators teachers creating lesson plans assignments tests needing reliable calculator for classroom demonstrations student guidance, or anyone requiring advanced mathematical computational capabilities beyond basic arithmetic with 100 percent free unlimited usage no registration requirements mobile-friendly interface private secure calculations data never stored ensuring user privacy making it trusted choice for millions worldwide updated for 2025 standards academic requirements professional applications.