Free Online Calculators

Fast, accurate solutions for Finance, Construction, Health, and more.

Prime Number Checker
Factorial Calculator
GCD and LCM Calculator
Fibonacci Sequence Generator
Quadratic Equation Solver
Matrix Multiplication Calculator
Complex Number Calculator
Polynomial Evaluator
Standard Deviation and Variance Calculator
Permutations and Combinations Calculator
Trigonometric Function Calculator
Slope and Distance Between Points Calculator
Circle Area and Circumference Calculator
Triangle Area Calculator
Volume and Surface Area Calculator
Linear Equation Solver
Riemann Sum Calculator
Derivative Calculator
Definite and Indefinite Integral Calculator
Taylor Series Calculator
Probability of Single Event Calculator
Z-Score and Normal Distribution Calculator
Binomial Distribution Calculator
Linear Regression Calculator
Eigenvalue and Eigenvector Calculator
Exponential Growth/Decay Calculator
Modular Arithmetic Calculator
Boolean Algebra Simplifier
Pascal’s Triangle Generator
Pythagorean Theorem Calculator
System of Equations Solver
Logarithmic Function Calculator
Inverse Trigonometric Function Calculator
Hypotenuse Calculator
Markov Chain Probability Calculator
Loan Interest Calculator
Percent Increase/Decrease Calculator
Ratio and Proportion Calculator
Conversion Calculator (Radians to Degrees, etc.)
Rational/Irrational Number Checker
Speed, Distance, and Time Calculator
Newton’s Second Law (Force, Mass, Acceleration) Calculator
Gravitational Force Calculator
Kinetic Energy Calculator
Potential Energy Calculator
Work Done Calculator
Power Calculator
Momentum Calculator
Impulse Calculator
Projectile Motion Calculator
Free Fall Calculator
Circular Motion (Centripetal Force) Calculator
Coulomb’s Law (Electrostatic Force) Calculator
Electric Field Strength Calculator
Electric Potential Energy Calculator
Ohm’s Law Calculator (Voltage, Current, Resistance)
Series and Parallel Resistor Calculator
Capacitance and Charge Calculator
Magnetic Force on a Moving Charge Calculator
Magnetic Flux Calculator
Snell’s Law (Refraction) Calculator
Lens and Mirror Equation Calculator
Wave Speed Calculator
Frequency and Wavelength Calculator
Doppler Effect Calculator
Thermal Expansion Calculator
Heat Transfer Calculator (Specific Heat Capacity)
Ideal Gas Law Calculator
Pressure, Volume, Temperature Relationship Calculator
Simple Harmonic Motion Calculator (Pendulum or Spring)
Sound Intensity Level (Decibel) Calculator
Buoyant Force Calculator
Fluid Pressure Calculator
Bernoulli’s Equation Calculator
Torque Calculator
Angular Momentum Calculator
Moment of Inertia Calculator
Radiation Half-Life Calculator
Relativistic Energy and Momentum Calculator
Escape Velocity Calculator
Simple Interest Calculator
Compound Interest Calculator
Loan Calculator
Mortgage Payment Calculator
Future Value (FV) and Present Value (PV) Calculator
Net Present Value (NPV) Calculator
Internal Rate of Return (IRR) Calculator
Return on Investment (ROI) Calculator
Break-Even Point Calculator
Profit Margin Calculator
Gross Profit and Net Profit Calculator
Debt-to-Equity Ratio Calculator
Current Ratio Calculator
Quick Ratio Calculator
Earnings Per Share (EPS) Calculator
Price-to-Earnings (P/E) Ratio Calculator
Dividend Yield Calculator
Capital Gains Calculator
Cash Flow Calculator
Discounted Cash Flow (DCF) Calculator
Payback Period Calculator
Cost of Goods Sold (COGS) Calculator
Inventory Turnover Ratio Calculator
Working Capital Calculator
Depreciation Calculator (Straight-Line, Declining Balance)
Bond Price and Yield Calculator
Annuity Payment Calculator
Effective Annual Rate (EAR) Calculator
Savings Goal Calculator
Tax Withholding Calculator
Retirement Savings Calculator
Income Tax Calculator
Sales Tax Calculator
Inflation Rate Calculator
Currency Exchange Rate Calculator
Budget Planner Calculator
Accounts Receivable Turnover Calculator
Accounts Payable Turnover Calculator
Contribution Margin Calculator
Variable and Fixed Costs Calculator
Body Mass Index (BMI) Calculator
Basal Metabolic Rate (BMR) Calculator
Total Daily Energy Expenditure (TDEE) Calculator
Body Fat Percentage Calculator
Ideal Body Weight Calculator
Caloric Needs Calculator
Macronutrient Calculator
Weight Loss Calculator
Water Intake Calculator
Target Heart Rate Calculator
Maximum Heart Rate Calculator
VO2 Max Calculator
Metabolic Age Calculator
Lean Body Mass Calculator
Resting Metabolic Rate (RMR) Calculator
Waist-to-Hip Ratio Calculator
Blood Alcohol Content (BAC) Calculator
Pregnancy Due Date Calculator
Body Surface Area (BSA) Calculator
Daily Fiber Intake Calculator
Exercise Calorie Burn Calculator
Running Pace Calculator
Step Count to Calories Burned Calculator
Protein Intake Calculator for Muscle Gain
Sleep Cycle Calculator
Health Age Calculator
Diabetes Risk Calculator
Blood Pressure Category Calculator
Cholesterol Ratio Calculator
Smoking Cost Calculator
Stress Level Calculator
One-Rep Max (1RM) Calculator for Lifting
Walking Calorie Burn Calculator
Cycling Calorie Burn Calculator
Hydration Status Calculator
Muscle Mass Percentage Calculator
Daily Sugar Intake Calculator
Waist-to-Height Ratio Calculator
Heart Rate Variability (HRV) Calculator
Workout Volume Calculator (Sets × Reps × Weight)
Length Conversion (e.g., meters to feet)
Weight/Mass Conversion (e.g., pounds to kilograms)
Temperature Conversion (Celsius, Fahrenheit, Kelvin)
Volume Conversion (e.g., liters to gallons)
Area Conversion (e.g., square meters to square feet)
Speed Conversion (e.g., miles per hour to kilometers per hour)
Time Conversion (e.g., minutes to hours, seconds to milliseconds)
Currency Conversion (based on current exchange rates)
Fuel Efficiency Conversion (e.g., MPG to km/L)
Pressure Conversion (e.g., psi to bar)
Energy Conversion (e.g., joules to calories)
Power Conversion (e.g., watts to horsepower)
Angle Conversion (degrees to radians)
Data Storage Conversion (e.g., MB to GB)
Frequency Conversion (e.g., hertz to kilohertz)
Force Conversion (e.g., newtons to pound-force)
Cooking Measurement Conversion (e.g., cups to milliliters)
Light Intensity Conversion (e.g., lumens to watts)
Torque Conversion (e.g., newton-meters to foot-pounds)
Density Conversion (e.g., g/cm³ to kg/m³)
Shoe Size Conversion (US, UK, EU sizes)
Clothing Size Conversion (international sizes)
Blood Sugar Conversion (mg/dL to mmol/L)
Radiation Dose Conversion (e.g., grays to rads)
Electric Charge Conversion (e.g., coulombs to ampere-hours)
Electric Current Conversion (e.g., amps to milliamps)
Electric Resistance Conversion (e.g., ohms to kilo-ohms)
Electric Capacitance Conversion (e.g., farads to microfarads)
Electric Voltage Conversion (e.g., volts to millivolts)
Cooking Temperature Conversion (gas mark, Celsius, Fahrenheit)
Height Conversion (feet/inches to centimeters)
BMI Units Conversion (Imperial to Metric)
Luminance Conversion (nits to candela/m²)
Acceleration Conversion
Flow Rate Conversion (e.g., cubic meters per second to liters per minute)
Viscosity Conversion
Sound Level Conversion (decibels to sone and Sone to decibels)
Currency Inflation Calculator (convert value from past year to current)
Horsepower to Kilowatt Conversion
Radiation Exposure Conversion (e.g., sieverts to rems)
Construction Area and Perimeter Calculator
Square Footage Calculator
Concrete Calculator
Cubic Yard Calculator
Board Foot Calculator
Drywall Calculator
Framing Calculator
Roof Pitch Calculator
Rafter Length Calculator
Stair Calculator
Decking Calculator
Tile Calculator
Paint Calculator
Asphalt Calculator
Brick and Block Calculator
Mortar and Cement Calculator
Insulation Calculator
Window and Door Header Calculator
Beam Span Calculator
Post and Beam Calculator
Floor Joist Calculator
Roof Truss Calculator
Roofing Shingles Calculator
Paver Calculator
Soil and Mulch Calculator
Topsoil Calculator
Gravel Calculator
Fence Calculator
Pipe Volume and Diameter Calculator
Rebar Calculator
Wall Stud Length Calculator
Sheetrock Calculator
Laminate and Hardwood Flooring Calculator
Foundation Calculator
Siding Calculator
Miter and Bevel Angle Calculator
Trim and Molding Calculator
Concrete Block Wall Calculator
Load-Bearing Wall Calculator
Circular Area Calculator
GPA Calculator
SAT Score Calculator
ACT Score Calculator
Grade Calculator
Weighted Average Calculator
College Admission Score Calculator
Class Rank Calculator
Study Time Calculator
Reading Speed Calculator
Time Management Calculator
Final Exam Grade Calculator
Grade Prediction Calculator
Conversion of Grades to Letter Grades Calculator
Test Score to Percentile Calculator
Percent Correct to Score Calculator
Scholarship Eligibility Calculator
Student Loan Repayment Calculator
Study Planner Calculator
Course Credit Hour Calculator
Essay Word Count Calculator
Flashcard Spaced Repetition Calculator
Exam Performance Calculator
Slope Calculator
Fraction Calculator
Mortgage Calculator
Auto Loan Calculator
Calorie Calculator
Time Calculator
Random Number Generator
Percentage Calculator
Password Generator
QR Code Generator
Timezone Converter
Ana Gonda Calculator
Epoch Time Converter
UUID Generator
Subnet Mask Calculator
Voltage Divider Calculator
Binary to Decimal Converter
SHA-256
Decimal to Binary Converter
Two's Complement Calculator
Hexadecimal to Decimal Converter
Image Aspect Ratio Calculator
IP Address Range Calculator
Morse Code Converter
RGB to CMYK Converter
Unicode Converter
Bitrate Calculator
Hash Generator (MD5)
CMYK to RGB Converter
Checksum Calculator
File Size Converter
Sorting Algorithm Visualizer
ASCII to Binary Converter
Data Transfer Time Calculator
Hexadecimal XOR Calculator
IP Address to Binary Converter
Network Bandwidth Calculator
Octal to Hexadecimal Converter
Gray Code Converter
MAC Address Format Converter
Base64 Encoder/Decoder
CSS Unit Converter
Color Contrast Ratio Calculator
Data Normalization Calculator
Hex Color to RGB Converter
Media Query Generator
Model Size Calculator
Password Strength Calculator
Hours Calculator
Date Calculator
Tire Size Calculator
Dice Rollar
Investment Calculator
CSS Gradient Generator
Color Scheme Generator
Hourly Paycheck Calculator
Personal Loan Calculator
Acre to Square Feet Converter
Land Measurement Rod & Chain Translator
Age Calculator
Fence Linear Footage Calculator
Fertilizer Calculator
Driveway Material Estimator
Swimming Pool Volume Calculator
US Sales Tax Calculator
Salary to Hourly Pay Converter
401(k) Retirement Simple Estimator
Tip & Bill Splitter
Gas Mileage (MPG) Calculator
Credit Card Debt Payoff Timer
Privacy Policy Generator
Investment Goal Calculator
House Affordability
CD Calculator
Home Equity Loan Calculator
Debt Consolidation Calculator
Amortization Calculator
refinance_calculator
HELOC Calculator
Period Calculator
Stamp Duty (SDLT) Calculator