Online Tools & Utilities
Free, fast, and easy-to-use web tools for everyone. Streamline your workflow with our comprehensive suite of 117+ utilities.
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Popular Tools
Most used and highly rated developer utilities
JSON Formatter & Validator
Format, validate, and minify JSON data with syntax highlighting and error detection
Guest Chat
Join daily conversations with other guests. Uses efficient JSONL format for messages and separate metadata files.
Notepad
Create, edit, save and manage notes directly in your browser.
Password Generator
Generate secure, random passwords with customizable length, character types, and strength indicators
JWT Decoder / Encoder
Decode, encode, and verify JSON Web Tokens (JWT) with HS256 signature support.
SIP Calculator
Calculate SIP returns, plan investments, and achieve financial goals. Calculate step-up SIP, inflation-adjusted returns, and get detailed projections.
✨ New Tools
21 new toolsSpeed Converter
Convert between speed units including km/h, mph, m/s, knots, and Mach number. Perfect for road travel, aviation, maritime, and scientific calculations
Fraction Calculator
Add, subtract, multiply, divide fractions, convert to decimals, and simplify fractions with step-by-step solutions
Electric Conductivity Converter
Convert between electric conductivity units including S/m, S/cm, mS/cm, and more. Essential for electrical engineering and materials science
SIP Calculator
Calculate SIP returns, plan investments, and achieve financial goals. Calculate step-up SIP, inflation-adjusted returns, and get detailed projections.
Statistical Tools
Calculate essential statistical measures including mean, median, mode, standard deviation, variance, and correlation. Perfect for data analysis, research, business analytics, and education
Matrix Unit Converter
Convert between matrix units, determinants, eigenvalues, and normalized values with dimension normalization. Perfect for linear algebra, engineering calculations, and scientific computing
Polar to Cartesian Converter
Convert between polar coordinates (r, θ), Cartesian coordinates (x, y), and complex numbers. Perfect for mathematics, physics, engineering, and signal processing
Electric Field Strength Converter
Convert between electric field strength units including V/m, V/cm, kV/m, and more. Essential for electrical engineering and electrostatics
Surface Current Density Converter
Convert between surface current density units including A/m², A/cm², and more. Essential for electrical engineering and electromagnetics
Linear Current Density Converter
Convert between linear current density units including A/m, A/cm, and more. Essential for electrical engineering and electromagnetics
Current Converter
Convert between electric current units including amperes, milliamperes, microamperes, and more. Essential for electrical engineering
Volume Charge Density Converter
Convert between volume charge density units including C/m³, C/cm³, and more. Essential for electrical engineering and electrostatics
Simple Math Calculator
Basic calculator for addition, subtraction, multiplication, and division operations
Radiation-Absorbed Dose Converter
Convert between radiation absorbed dose units including grays, rads, and more. Essential for health physics and medical physics
Radiation-Exposure Converter
Convert between radiation exposure units including roentgens, C/kg, and more. Essential for health physics and radiation protection
Radiation-Activity Converter
Convert between radiation activity units including becquerels, curies, and more. Essential for nuclear physics and medical imaging
Permeability Converter
Convert between permeability units including m², darcy, millidarcy, and more. Essential for petroleum engineering and porous media flow
Viscosity - Kinematic Converter
Convert between kinematic viscosity units including m²/s, stokes, centistokes, and more. Essential for fluid dynamics and flow analysis
Concentration - Molar Converter
Convert between molar concentration units including mol/L, mol/m³, lbmol/ft³, and more. Essential for chemistry and chemical engineering
Surface Tension Converter
Convert between surface tension units including N/m, dyn/cm, lb/ft, and more. Essential for fluid mechanics and interfacial phenomena
Viscosity - Dynamic Converter
Convert between dynamic viscosity units including Pa·s, poise, centipoise, and more. Essential for fluid dynamics and rheology
Encoders
(5 tools)Base64 Encode/Decode
Convert text to Base64 format and decode Base64 strings
HTML ⇄ Entities Converter
Encode and decode HTML entities
URL Encoder/Decoder
Encode and decode URL components
Base64 ⇄ Image
Convert between Base64 and Image formats
Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes from text input
Converters
(8 tools)JSON Formatter & Validator
Format, validate, and minify JSON data with syntax highlighting and error detection
YAML ⇄ JSON Converter
Convert between YAML and JSON formats with validation and formatting
Color Converter
Convert between HEX, RGB, HSL color formats
QR Code Generator
Generate custom QR codes for URLs, text, contact info, and more with customizable colors and sizes
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates with timezone support and current timestamp generation
Markdown ⇄ HTML Converter
Convert Markdown to HTML and HTML back to Markdown. Support for headers, links, images, code blocks, lists, tables, and more
CSV ⇄ JSON Converter
Convert between CSV and JSON formats with smart parsing, custom delimiters, and file upload/download support
SQL Formatter & Beautifier
Format, beautify, and validate SQL queries with syntax highlighting. Support for multiple SQL dialects including MySQL, PostgreSQL, SQLite, and more
Common Converters
(9 tools)Text ⇄ Binary ⇄ Hex ⇄ Octal
Convert between text and different number systems
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin with real-time conversion, smart validation, precise formatting, and one-click copy
Text Case Converter
Convert text between different casing conventions
Length Converter
Convert between metric, imperial, and other length units including meters, kilometers, inches, feet, miles, and more with real-time conversion
Volume Converter
Convert between metric and US customary volume units including mL, L, tsp, tbsp, fl oz, cups, pints, quarts, and gallons with real-time conversion
Weight Converter
Convert between metric, imperial, scientific, and other weight units including kilograms, pounds, ounces, grams, and more with precision control
Area Converter
Convert between square meters, square feet, acres, hectares, and other area units for real estate, construction, and land measurement with high precision
Speed Converter
Convert between speed units including km/h, mph, m/s, knots, and Mach number. Perfect for road travel, aviation, maritime, and scientific calculations
Volume - Dry Converter
Convert between dry volume units including bushels, pecks, dry gallons, and more. Perfect for agriculture, grain storage, and bulk material handling
Utilities
(10 tools)Data Generator
Generate realistic sample data for testing, development, and prototyping with customizable schemas
Guest Chat
Join daily conversations with other guests. Uses efficient JSONL format for messages and separate metadata files.
UUID Generator
Generate RFC 4122 compliant UUIDs (v1 and v4) with multiple output formats for databases, APIs, and applications
Random Number Generator
Generate random numbers between a defined min and max value with one click.
Regex Tester
Build, test, and debug regular expressions with instant match highlighting and flag support
Today"s Date
Get today"s date, current time, and perform date calculations with multiple formats and timezone support
URL Parser & Decoder
Parse, validate, and decode URLs with detailed component breakdown. Extract protocol, hostname, path, query parameters, and fragments from any URL
Image Resizer
Resize images with precision using drag & drop, preset sizes, and real-time previews. Support for JPG, PNG, WebP, GIF, and SVG formats
Fraction Calculator
Add, subtract, multiply, divide fractions, convert to decimals, and simplify fractions with step-by-step solutions
Average Calculator
Calculate mean, median, mode, range, standard deviation, and variance with step-by-step calculations and data visualization
Productivity
(6 tools)Luxury Inventory Tracker
Track, manage, and maintain luxury assets including watches, jewelry, art, vehicles, and other high-value items
Pomodoro Timer
Boost productivity with focused work sessions and timed breaks using the proven Pomodoro Technique
Calendar
Manage and view events by day, week, or month in a smart calendar interface
Notepad
Create, edit, save and manage notes directly in your browser.
Stopwatch
Measure elapsed time with start, stop, lap, and reset functionalities.
Countdown Timer
Set custom countdown timers with pause, resume, and audio alerts. Perfect for productivity and time management
Security Tools
(2 tools)Text Tools
(4 tools)Word/Character Counter
Count words, characters, sentences, and paragraphs in your text
Text Sorter & Deduplicator
Sort lines in ascending or descending order, remove duplicates, and strip blank lines
Text to Speech
Convert text to speech with natural-sounding voices, adjustable speed, pitch, and volume controls
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text with customizable paragraphs, words, and formatting options. Perfect for designers, developers, and content creators
Financial Tools
(5 tools)Advanced EMI Calculator
Professional EMI calculator with balloon payments, 150+ currencies, and detailed amortization schedules. Bank-level accuracy for mortgages, auto loans, and business financing.
Budget Planner
Take control of your finances with comprehensive budget planning. Track income, expenses, set budgets, and achieve financial goals with detailed analytics
Tip Calculator
Calculate tips, split bills, add tax, and round totals with our comprehensive tip calculator. Perfect for restaurants, delivery, and service industry
Percentage Calculator
Calculate percentages, percentage increase/decrease, find percentage of a number, and solve percentage problems with step-by-step solutions
SIP Calculator
Calculate SIP returns, plan investments, and achieve financial goals. Calculate step-up SIP, inflation-adjusted returns, and get detailed projections.
Radiology Converters
(4 tools)Radiation Converter
Convert between different radiation units including gray, rad, sievert, and rem. Essential for health physics, nuclear science, and medical imaging.
Radiation-Activity Converter
Convert between radiation activity units including becquerels, curies, and more. Essential for nuclear physics and medical imaging
Radiation-Exposure Converter
Convert between radiation exposure units including roentgens, C/kg, and more. Essential for health physics and radiation protection
Radiation-Absorbed Dose Converter
Convert between radiation absorbed dose units including grays, rads, and more. Essential for health physics and medical physics
Fluids Converters
(12 tools)pH Converter
Convert between pH values, hydrogen ion concentrations (H+), hydroxide ion concentrations (OH-), and pOH. Essential for chemistry labs and water quality testing
Gas Volume Converter
Convert between pressure, volume, temperature, and moles using the ideal gas law (PV = nRT)
Salinity/TDS Converter
Convert between salinity and total dissolved solids units including PSU, g/kg, mg/L, and more
Flow - Mass Converter
Convert between mass flow rate units including kg/s, lb/min, g/h, and more. Essential for chemical engineering and fluid dynamics
Flow - Molar Converter
Convert between molar flow rate units including mol/s, kmol/h, lbmol/min, and more. Essential for chemical engineering and reaction kinetics
Mass Flux Density Converter
Convert between mass flux density units including kg/m²·s, lb/ft²·hr, g/cm²·min, and more. Essential for mass transfer analysis
Concentration - Molar Converter
Convert between molar concentration units including mol/L, mol/m³, lbmol/ft³, and more. Essential for chemistry and chemical engineering
Concentration - Solution Converter
Convert between solution concentration units including %, ppm, ppb, mg/L, and more. Essential for chemistry and environmental analysis
Viscosity - Dynamic Converter
Convert between dynamic viscosity units including Pa·s, poise, centipoise, and more. Essential for fluid dynamics and rheology
Viscosity - Kinematic Converter
Convert between kinematic viscosity units including m²/s, stokes, centistokes, and more. Essential for fluid dynamics and flow analysis
Surface Tension Converter
Convert between surface tension units including N/m, dyn/cm, lb/ft, and more. Essential for fluid mechanics and interfacial phenomena
Permeability Converter
Convert between permeability units including m², darcy, millidarcy, and more. Essential for petroleum engineering and porous media flow
Engineering Converters
(10 tools)Gravitational Units Converter
Convert between g-force, acceleration (m/s², ft/s²), Gal, and related units. Essential for physics, aerospace, and automotive testing
Polar to Cartesian Converter
Convert between polar coordinates (r, θ), Cartesian coordinates (x, y), and complex numbers. Perfect for mathematics, physics, engineering, and signal processing
Matrix Unit Converter
Convert between matrix units, determinants, eigenvalues, and normalized values with dimension normalization. Perfect for linear algebra, engineering calculations, and scientific computing
Wire Gauge Converter
Convert between AWG, SWG, millimeters, and inches for electrical engineering and manufacturing
Velocity - Angular Converter
Convert between angular velocity units including rad/s, deg/s, RPM, and more. Essential for mechanical engineering, robotics, and rotational motion analysis
Acceleration Converter
Convert between acceleration units including m/s², ft/s², g-force, and more. Essential for physics, automotive testing, and aerospace applications
Acceleration - Angular Converter
Convert between angular acceleration units including rad/s², deg/s², and more. Essential for mechanical engineering and rotational dynamics
Specific Volume Converter
Convert between specific volume units including m³/kg, ft³/lb, and more. Essential for thermodynamics and fluid mechanics
Moment of Inertia Converter
Convert between moment of inertia units including kg·m², lb·ft², and more. Essential for mechanical engineering and rotational dynamics
Moment of Force Converter
Convert between moment of force units including N·m, lbf·ft, and more. Essential for mechanical engineering and statics
Light Converters
(6 tools)Radiance/Irradiance Converter
Convert between W/m², mW/cm², BTU/hr·ft², cal/cm²·min, erg/cm²·s, and solar flux units. Essential for optics, solar energy, and environmental science
Luminance Converter
Convert between luminance units including cd/m², nit, stilb, lambert, and more. Essential for lighting design and photometry
Luminous Intensity Converter
Convert between luminous intensity units including candela, lumen/steradian, and more. Essential for lighting design and photometry
Illumination Converter
Convert between illumination units including lux, foot-candle, phot, and more. Essential for lighting design and photometry
Digital Image Resolution Converter
Convert between digital image resolution units including DPI, PPI, pixels/cm, and more. Essential for digital imaging and printing
Frequency Wavelength Converter
Convert between frequency and wavelength units including Hz, THz, nm, μm, and more. Essential for optics and electromagnetic wave analysis
Heat Converters
(10 tools)Heat Transfer Converter
Convert between heat transfer coefficient units including W/m²·K, BTU/hr·ft²·°F, cal/s·cm²·°C, and more. Perfect for engineering, HVAC, construction, and thermal analysis
Fuel Efficiency - Mass Converter
Convert between fuel efficiency units based on mass including g/kWh, lb/hp·hr, and more. Essential for automotive engineering and fuel analysis
Fuel Efficiency - Volume Converter
Convert between fuel efficiency units based on volume including L/100km, mpg, and more. Essential for automotive engineering and fuel analysis
Temperature Interval Converter
Convert between temperature interval units including K, °C, °F, and °R. Essential for thermodynamics and temperature difference calculations
Thermal Expansion Converter
Convert between thermal expansion coefficient units including 1/K, 1/°C, 1/°F, and more. Essential for materials science and engineering
Thermal Resistance Converter
Convert between thermal resistance units including K/W, °C/W, °F·hr/BTU, and more. Essential for heat transfer and insulation analysis
Thermal Conductivity Converter
Convert between thermal conductivity units including W/m·K, BTU/hr·ft·°F, cal/s·cm·°C, and more. Essential for heat transfer analysis
Specific Heat Capacity Converter
Convert between specific heat capacity units including J/kg·K, BTU/lb·°F, cal/g·°C, and more. Essential for thermodynamics and heat calculations
Heat Density Converter
Convert between heat density units including J/m³, BTU/ft³, cal/cm³, and more. Essential for heat storage and thermal analysis
Heat Flux Density Converter
Convert between heat flux density units including W/m², BTU/hr·ft², cal/s·cm², and more. Essential for heat transfer analysis
Other Converters
(6 tools)Statistical Tools
Calculate essential statistical measures including mean, median, mode, standard deviation, variance, and correlation. Perfect for data analysis, research, business analytics, and education
Prefixes Converter
Convert between SI prefixes including kilo, mega, giga, milli, micro, nano, and more. Essential for scientific notation and unit scaling
Data Transfer Converter
Convert between data transfer rate units including bits/s, bytes/s, Mbps, Gbps, and more. Essential for networking and data communication
Sound Converter
Convert between sound units including decibels, bel, neper, and more. Essential for audio engineering and acoustics
Typography Converter
Convert between typography units including points, picas, ems, rems, and more. Essential for graphic design and web development
Volume - Lumber Converter
Convert between lumber volume units including board feet, cubic meters, cubic feet, and more. Essential for woodworking and construction
Electricity Converters
(15 tools)Charge Converter
Convert between electric charge units including coulombs, ampere-hours, faradays, and more. Essential for electrical engineering and electrochemistry
Linear Charge Density Converter
Convert between linear charge density units including C/m, C/cm, and more. Essential for electrical engineering and electrostatics
Surface Charge Density Converter
Convert between surface charge density units including C/m², C/cm², and more. Essential for electrical engineering and electrostatics
Volume Charge Density Converter
Convert between volume charge density units including C/m³, C/cm³, and more. Essential for electrical engineering and electrostatics
Current Converter
Convert between electric current units including amperes, milliamperes, microamperes, and more. Essential for electrical engineering
Linear Current Density Converter
Convert between linear current density units including A/m, A/cm, and more. Essential for electrical engineering and electromagnetics
Surface Current Density Converter
Convert between surface current density units including A/m², A/cm², and more. Essential for electrical engineering and electromagnetics
Electric Field Strength Converter
Convert between electric field strength units including V/m, V/cm, kV/m, and more. Essential for electrical engineering and electrostatics
Electric Potential Converter
Convert between electric potential units including volts, millivolts, kilovolts, and more. Essential for electrical engineering
Electric Resistance Converter
Convert between electric resistance units including ohms, milliohms, kilohms, and more. Essential for electrical engineering
Electric Resistivity Converter
Convert between electric resistivity units including Ω·m, Ω·cm, μΩ·cm, and more. Essential for electrical engineering and materials science
Electric Conductance Converter
Convert between electric conductance units including siemens, millisiemens, and more. Essential for electrical engineering
Electric Conductivity Converter
Convert between electric conductivity units including S/m, S/cm, mS/cm, and more. Essential for electrical engineering and materials science
Electrostatic Capacitance Converter
Convert between capacitance units including farads, microfarads, picofarads, and more. Essential for electrical engineering
Inductance Converter
Convert between inductance units including henries, millihenries, microhenries, and more. Essential for electrical engineering
Magnetism Converters
(4 tools)Magnetomotive Force Converter
Convert between magnetomotive force units including ampere-turns, gilberts, and more. Essential for electrical engineering and electromagnetics
Magnetic Field Strength Converter
Convert between magnetic field strength units including A/m, Oe, and more. Essential for electrical engineering and electromagnetics
Magnetic Flux Converter
Convert between magnetic flux units including webers, maxwells, and more. Essential for electrical engineering and electromagnetics
Magnetic Flux Density Converter
Convert between magnetic flux density units including teslas, gauss, and more. Essential for electrical engineering and electromagnetics
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