Online Tools & Utilities
Free, fast, and easy-to-use web tools for everyone. Streamline your workflow with our comprehensive suite of 77+ 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
Base64 Encode/Decode
Convert text to Base64 format and decode Base64 strings
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
Image Resizer
Resize images with precision using drag & drop, preset sizes, and real-time previews. Support for JPG, PNG, WebP, GIF, and SVG formats
JWT Decoder / Encoder
Decode, encode, and verify JSON Web Tokens (JWT) with HS256 signature support.
Community Insights
Real-time statistics from our developer community
✨ New Tools
51 new toolsHeat 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
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
Statistical Tools
Calculate essential statistical measures including mean, median, mode, standard deviation, variance, and correlation. Perfect for data analysis, research, business analytics, and education
pH Converter
Convert between pH values, hydrogen ion concentrations (H+), hydroxide ion concentrations (OH-), and pOH. Essential for chemistry labs and water quality testing
Gravitational Units Converter
Convert between g-force, acceleration (m/s², ft/s²), Gal, and related units. Essential for physics, aerospace, and automotive testing
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
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
Torque Converter
Convert between torque units including N⋅m, lbf⋅ft, kgf⋅m, dyn⋅cm, and more. Perfect for engineering, automotive, and mechanical applications
Frequency Converter
Convert between frequency units including Hz, kHz, MHz, GHz, RPM, and more. Perfect for electronics, audio engineering, and scientific calculations
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years. Perfect for scheduling, project management, and daily calculations
Data Storage Converter
Convert between data storage units including bits, bytes, KiB, MiB, KB, MB, and more. Perfect for computing, file management, and digital storage calculations
Astronomical Distance Converter
Convert between astronomical distance units including AU, light years, parsecs, kilometers, and miles. Essential for astrophysics, space exploration, and astronomy education.
Molarity Converter
Convert between molarity units including mol/L, g/L, ppm, and % solution. Essential for chemistry labs, biology research, and pharmaceutical industry.
Force Converter
Convert between force units including newtons, pound-force, dynes, and kilogram-force. Essential for physics, engineering, construction, and automotive applications.
Coordinate Converter
Convert between coordinate systems including decimal degrees, DMS, UTM, and MGRS. Essential for GPS navigation, surveying, mapping, and military applications.
Hardness Scale Converter
Convert between different hardness scales including Mohs, Rockwell, Vickers, and Brinell. Essential for materials science, metallurgy, and quality control.
Radiation Converter
Convert between different radiation units including gray, rad, sievert, and rem. Essential for health physics, nuclear science, and medical imaging.
Photon Energy Converter
Convert between photon energy units including eV, nm, Hz, and joules. Essential for optics, spectroscopy, and quantum physics.
Geodetic Coordinate Converter
Convert between different coordinate systems including decimal degrees, DMS, UTM, and MGRS. Essential for GPS navigation, surveying, mapping, and military applications.
Viscosity Converter
Convert between different viscosity units including Pa·s, poise, centipoise, and stokes. Essential for chemical engineering, fluid dynamics, and materials science.
Fuel Consumption Converter
Convert between different fuel consumption units including mpg, L/100km, km/L, and gal/mi. Essential for automotive, transportation, and fuel efficiency calculations.
Cooking Converter
Convert between cooking units including cups, tablespoons, grams, ounces, and more. Perfect for recipe conversion, international cooking, and baking.
Logarithmic Converter
Convert between logarithmic units including decibels, power ratios, intensity ratios, and more. Essential for audio engineering, signal processing, and acoustics.
Concentration Converter
Convert between concentration units including mass fraction, mole fraction, ppm, ppb, and more. Essential for chemistry labs, environmental testing, and pharmaceuticals.
Blackbody Radiation Peak Converter
Convert between blackbody radiation peak units including temperature, wavelength peak (λmax), and frequency peak (νmax). Essential for astrophysics, thermal physics, and materials science.
Environmental Dose Converter
Convert between environmental dose units including rad, gray, sievert, and rem. Essential for radiological protection, environmental monitoring, and health physics.
Soil Moisture Converter
Convert between soil moisture units including volumetric, gravimetric, and saturation percentage. Essential for agriculture, geoscience, soil science, and environmental monitoring.
Pressure Converter
Convert between pressure units including Pa, bar, atm, PSI, mmHg, and more. Perfect for engineering, physics, chemistry, and everyday applications
Flow Rate Converter
Convert between flow rate units including L/s, m³/h, gal/min, cfm, and more. Perfect for HVAC, plumbing, chemical engineering, and irrigation applications
Energy Converter
Convert between energy units including joules, calories, kilowatt-hours, BTUs, electron volts, and more. Perfect for physics, engineering, chemistry, and everyday calculations
Power Converter
Convert between power units including watts, kilowatts, horsepower, BTUs per hour, and more. Perfect for electrical engineering, mechanical systems, and power calculations
Angle Converter
Convert between angle units including degrees, radians, gradians, and more. Perfect for mathematics, engineering, navigation, and scientific calculations
Density Converter
Convert between density units including kg/m³, lb/ft³, g/cm³, and more. Perfect for physics, chemistry, engineering, and material science calculations
Pomodoro Timer
Boost productivity with focused work sessions and timed breaks using the proven Pomodoro Technique
Area Converter
Convert between square meters, square feet, acres, hectares, and other area units for real estate, construction, and land measurement with high precision
Tip Calculator
Calculate tips, split bills, add tax, and round totals with our comprehensive tip calculator. Perfect for restaurants, delivery, and service industry
Luxury Inventory Tracker
Track, manage, and maintain luxury assets including watches, jewelry, art, vehicles, and other high-value items
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin with real-time conversion, smart validation, precise formatting, and one-click copy
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
Image Resizer
Resize images with precision using drag & drop, preset sizes, and real-time previews. Support for JPG, PNG, WebP, GIF, and SVG formats
Guest Chat
Join daily conversations with other guests. Uses efficient JSONL format for messages and separate metadata files.
Weight Converter
Convert between metric, imperial, scientific, and other weight units including kilograms, pounds, ounces, grams, and more with precision control
Length Converter
Convert between metric, imperial, and other length units including meters, kilometers, inches, feet, miles, and more with real-time conversion
Budget Planner
Take control of your finances with comprehensive budget planning. Track income, expenses, set budgets, and achieve financial goals with detailed analytics
URL Parser & Decoder
Parse, validate, and decode URLs with detailed component breakdown. Extract protocol, hostname, path, query parameters, and fragments from any URL
YAML ⇄ JSON Converter
Convert between YAML and JSON formats with validation and formatting
SQL Formatter & Beautifier
Format, beautify, and validate SQL queries with syntax highlighting. Support for multiple SQL dialects including MySQL, PostgreSQL, SQLite, and more
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text with customizable paragraphs, words, and formatting options. Perfect for designers, developers, and content creators
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.
Data Generator
Generate realistic sample data for testing, development, and prototyping with customizable schemas
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
(15 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
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years. Perfect for scheduling, project management, and daily calculations
Data Storage Converter
Convert between data storage units including bits, bytes, KiB, MiB, KB, MB, and more. Perfect for computing, file management, and digital storage calculations
Fuel Consumption Converter
Convert between different fuel consumption units including mpg, L/100km, km/L, and gal/mi. Essential for automotive, transportation, and fuel efficiency calculations.
Pressure Converter
Convert between pressure units including Pa, bar, atm, PSI, mmHg, and more. Perfect for engineering, physics, chemistry, and everyday applications
Energy Converter
Convert between energy units including joules, calories, kilowatt-hours, BTUs, electron volts, and more. Perfect for physics, engineering, chemistry, and everyday calculations
Power Converter
Convert between power units including watts, kilowatts, horsepower, BTUs per hour, and more. Perfect for electrical engineering, mechanical systems, and power calculations
Angle Converter
Convert between angle units including degrees, radians, gradians, and more. Perfect for mathematics, engineering, navigation, and scientific calculations
Utilities
(8 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
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
(3 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
Engineering Converters
(10 tools)Torque Converter
Convert between torque units including N⋅m, lbf⋅ft, kgf⋅m, dyn⋅cm, and more. Perfect for engineering, automotive, and mechanical applications
Frequency Converter
Convert between frequency units including Hz, kHz, MHz, GHz, RPM, and more. Perfect for electronics, audio engineering, and scientific calculations
Force Converter
Convert between force units including newtons, pound-force, dynes, and kilogram-force. Essential for physics, engineering, construction, and automotive applications.
Coordinate Converter
Convert between coordinate systems including decimal degrees, DMS, UTM, and MGRS. Essential for GPS navigation, surveying, mapping, and military applications.
Hardness Scale Converter
Convert between different hardness scales including Mohs, Rockwell, Vickers, and Brinell. Essential for materials science, metallurgy, and quality control.
Geodetic Coordinate Converter
Convert between different coordinate systems including decimal degrees, DMS, UTM, and MGRS. Essential for GPS navigation, surveying, mapping, and military applications.
Density Converter
Convert between density units including kg/m³, lb/ft³, g/cm³, and more. Perfect for physics, chemistry, engineering, and material science calculations
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
Other Converters
(5 tools)Astronomical Distance Converter
Convert between astronomical distance units including AU, light years, parsecs, kilometers, and miles. Essential for astrophysics, space exploration, and astronomy education.
Cooking Converter
Convert between cooking units including cups, tablespoons, grams, ounces, and more. Perfect for recipe conversion, international cooking, and baking.
Logarithmic Converter
Convert between logarithmic units including decibels, power ratios, intensity ratios, and more. Essential for audio engineering, signal processing, and acoustics.
Soil Moisture Converter
Convert between soil moisture units including volumetric, gravimetric, and saturation percentage. Essential for agriculture, geoscience, soil science, and environmental monitoring.
Statistical Tools
Calculate essential statistical measures including mean, median, mode, standard deviation, variance, and correlation. Perfect for data analysis, research, business analytics, and education
Fluids Converters
(5 tools)Molarity Converter
Convert between molarity units including mol/L, g/L, ppm, and % solution. Essential for chemistry labs, biology research, and pharmaceutical industry.
Viscosity Converter
Convert between different viscosity units including Pa·s, poise, centipoise, and stokes. Essential for chemical engineering, fluid dynamics, and materials science.
Concentration Converter
Convert between concentration units including mass fraction, mole fraction, ppm, ppb, and more. Essential for chemistry labs, environmental testing, and pharmaceuticals.
Flow Rate Converter
Convert between flow rate units including L/s, m³/h, gal/min, cfm, and more. Perfect for HVAC, plumbing, chemical engineering, and irrigation applications
pH Converter
Convert between pH values, hydrogen ion concentrations (H+), hydroxide ion concentrations (OH-), and pOH. Essential for chemistry labs and water quality testing
Radiology Converters
(2 tools)Radiation Converter
Convert between different radiation units including gray, rad, sievert, and rem. Essential for health physics, nuclear science, and medical imaging.
Environmental Dose Converter
Convert between environmental dose units including rad, gray, sievert, and rem. Essential for radiological protection, environmental monitoring, and health physics.
Light Converters
(2 tools)Photon Energy Converter
Convert between photon energy units including eV, nm, Hz, and joules. Essential for optics, spectroscopy, and quantum physics.
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
Heat Converters
(2 tools)Blackbody Radiation Peak Converter
Convert between blackbody radiation peak units including temperature, wavelength peak (λmax), and frequency peak (νmax). Essential for astrophysics, thermal physics, and materials science.
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
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