TooliaVerse — 100+ Free Online Utilities for Everyone

100+ free, fast, browser-based tools. No signup, no tracking. JSON formatter, password generator, QR codes and more.

Text (28)

Uppercase / Lowercase — Convert text to uppercase, lowercase, title case or sentence case
Word Counter — Count words, characters, sentences and estimate reading time
Character Counter — Detailed character analysis: letters, digits, spaces and special chars
Lorem Ipsum Generator — Generate placeholder Lorem Ipsum text for design and development
Remove Extra Spaces — Remove duplicate spaces, leading/trailing whitespace and blank lines
Sort Text Lines — Sort lines alphabetically, by length, or reverse the order
Remove Duplicate Lines — Remove duplicate lines from any block of text instantly
URL Encoder — Encode special characters in URLs for safe use in links
URL Decoder — Decode percent-encoded URLs back to human-readable format
Markdown Preview — Write Markdown and see a live HTML preview side by side
HTML Entities — Encode and decode HTML entities for safe use in web pages
Morse Code Converter — Convert text to Morse code and decode Morse code back to text
Text to Slug — Convert any text to a clean URL slug with custom separator options
Code Case Converter — Convert between camelCase, PascalCase, snake_case, kebab-case and more
Text Repeater — Repeat any text a specified number of times with custom separators
Word Frequency Counter — Analyze text and count word occurrences sorted by frequency
Text Similarity Checker — Compare two texts and calculate similarity percentage
Binary Text Converter — Convert text to binary (01010100…) and binary back to readable text
Flip Text — Flip text upside down, reverse it, mirror it or apply ROT13
String Escaper — Escape and unescape strings for JSON, HTML, URL and Regex contexts
Text Reverser — Reverse text by characters, words or lines with one click
Palindrome Checker — Check if text is a palindrome with options to ignore spaces, case and punctuation
Text Truncator — Truncate text to a specific number of characters or words with custom ellipsis
Vowel & Consonant Counter — Count vowels and consonants in text with per-letter breakdown
Anagram Checker — Check if two words are anagrams of each other and rearrange letters
Character Frequency — Analyze character frequency in text with bar chart visualization
Unicode Inspector — Inspect each character in text to see its Unicode codepoint and HTML entity
Invisible Character Remover — Detect and remove zero-width, soft hyphen and other invisible Unicode characters

JSON (13)

JSON Formatter — Format, beautify and validate JSON with syntax highlighting
JSON Minifier — Minify JSON by removing whitespace and reducing file size
JSON Validator — Validate JSON syntax and get clear, descriptive error messages
JSON to CSV — Convert JSON arrays to CSV format with automatic column detection
JSON ↔ YAML — Convert JSON to YAML format and YAML back to JSON
JSON Flatten — Flatten nested JSON into dot-notation key-value pairs
JSON Compare — Compare two JSON objects and see exactly what was added, removed or changed
JSON to TypeScript — Generate TypeScript interfaces automatically from any JSON object
JSONPath Tester — Test JSONPath expressions against JSON data and see matching results
JSON Key Sorter — Sort JSON object keys alphabetically with recursive and depth options
JSON to XML Converter — Convert JSON to well-formed XML with configurable root element name
XML to JSON Converter — Convert XML to JSON with attribute handling and array detection
YAML to JSON Converter — Parse YAML and convert to JSON, handling nested objects, arrays and types

Developer (33)

UUID Generator — Generate one or multiple universally unique identifiers (UUIDs v4)
Timestamp Converter — Convert Unix timestamps to human-readable dates and vice versa
Base64 Encoder — Encode text or strings to Base64 format instantly
Base64 Decoder — Decode Base64 encoded strings back to plain text
Hash Generator — Generate SHA-1, SHA-256, SHA-384, SHA-512 cryptographic hashes
Color Converter — Convert colors between HEX, RGB and HSL formats with live preview
Number Base Converter — Convert numbers between binary, octal, decimal and hexadecimal
Regex Tester — Test regular expressions with live match highlighting and group details
Roman Numerals — Convert decimal numbers to Roman numerals and vice versa
CSS Minifier — Minify CSS by removing comments, spaces and reducing file size
JWT Decoder — Decode and inspect JSON Web Tokens — header, payload and expiry
HTML Previewer — Write HTML and see a live rendered preview side by side
Diff Checker — Compare two texts and highlight added, removed and unchanged lines
URL Parser — Break down any URL into protocol, host, path, query params and hash
Cron Explainer — Translate cron expressions into plain English and validate the syntax
HTTP Status Codes — Complete searchable reference of all HTTP status codes with descriptions
Meta Tag Generator — Generate HTML meta tags, Open Graph and Twitter Card tags
HTML Beautifier — Format and indent HTML code for better readability
SQL Formatter — Format, beautify and indent SQL queries with keyword capitalization
.gitignore Generator — Generate .gitignore files for any tech stack by selecting project types
Emoji Picker — Browse, search and copy emojis organized by category
User-Agent Parser — Parse User-Agent strings to detect browser, OS and device type
Markdown Table Generator — Build Markdown tables visually with a grid editor and alignment controls
XML Formatter — Format and beautify XML with validation and configurable indentation
CSV to JSON Converter — Convert CSV text to a JSON array with automatic header detection
HTML to JSX Converter — Convert HTML to React JSX: className, htmlFor, self-closing tags and style objects
CSS Specificity Calculator — Calculate CSS selector specificity scores with a-b-c breakdown
chmod Calculator — Calculate Unix file permissions with octal notation and symbolic representation
Open Graph Preview — Preview how your pages look when shared on social media with OG tags
Favicon Generator — Generate a favicon from text or emoji with custom colors and download as PNG
Color to CSS Variables — Convert hex colors to CSS custom properties with naming conventions
.htpasswd Generator — Generate .htpasswd entries with SHA1-based password hashing
CORS Header Builder — Build CORS response headers with origin, methods, credentials and more

Image (8)

Image to Base64 — Convert any image to a Base64 encoded data URL
Image Resizer — Resize images to any dimension and export as PNG, JPEG or WebP
Image Compressor — Compress images with a quality slider and download the optimized result
Image Color Picker — Click anywhere on an image to extract the exact HEX, RGB and HSL color
Image Filters — Apply brightness, contrast, saturation, blur and more filters to images
Image Metadata — View image dimensions, file size, aspect ratio and format
SVG to PNG Converter — Paste SVG code and export it as a PNG at any resolution
Image Rotate & Flip — Rotate images by any angle and flip horizontally or vertically

Math (14)

Percentage Calculator — Calculate percentage of a number, what percent X is of Y, and change
Age Calculator — Calculate your exact age in years, months, days and find your next birthday
Date Difference — Calculate the number of days, weeks and months between any two dates
Scientific Calculator — Full scientific calculator with trigonometry, logarithms and powers
BMI Calculator — Calculate your Body Mass Index with metric or imperial units
Fibonacci Generator — Generate the Fibonacci sequence up to N terms with sum display
Prime Checker — Check if a number is prime and find all primes within a range
Statistics Calculator — Calculate mean, median, mode, variance and standard deviation
Number Formatter — Format numbers with locale-specific separators and currency symbols
Matrix Calculator — Perform 2×2 and 3×3 matrix operations: add, multiply, transpose and determinant
Quadratic Equation Solver — Solve ax²+bx+c=0 and see roots, discriminant, vertex and SVG parabola
Fraction Calculator — Add, subtract, multiply and divide fractions with step-by-step results
Trigonometry Calculator — Calculate all six trig functions with degrees/radians and unit circle diagram
Logarithm Calculator — Calculate log₁₀, ln, log₂ and custom-base logarithms with antilog

Finance (11)

Loan Calculator — Calculate monthly loan payments, total interest and amortization
Tip Calculator — Calculate tip amount, total bill and split between multiple people
Discount Calculator — Calculate sale prices, savings amount and discount percentage
Compound Interest — Calculate compound interest and year-by-year growth breakdown
VAT Calculator — Add or remove VAT from any price, or find the VAT rate
Currency Converter — Convert between 30+ world currencies with approximate exchange rates
Mortgage Calculator — Calculate monthly payments, total interest and first-year amortization breakdown
Retirement Calculator — Project retirement savings with monthly contributions and investment returns
Inflation Calculator — Calculate purchasing power changes and future prices due to inflation
ROI Calculator — Calculate return on investment, annualized ROI and net profit
Savings Goal Calculator — Calculate how long to reach a savings goal with monthly contributions

Color (5)

Color Palette Generator — Generate tints, shades and harmonious color palettes from any base color
CSS Gradient Generator — Build linear and radial CSS gradients visually with multiple color stops
Contrast Checker — Check WCAG accessibility contrast ratio between foreground and background colors
Color Mixer — Mix two colors together with a ratio slider and see the blended result
Color Name Finder — Find the closest CSS color name for any HEX or RGB color value

Utility (38)

Password Generator — Generate strong, secure passwords with custom rules
QR Code Generator — Generate QR codes for any text, URL or data instantly
Stopwatch — Precise stopwatch with lap times and centisecond display
Countdown Timer — Countdown timer with hours, minutes and seconds
Calculator — Simple and clean calculator for quick arithmetic calculations
Random Number Generator — Generate random numbers within a custom range
Random Name Generator — Generate random first and last names for testing and placeholder data
Temperature Converter — Convert between Celsius, Fahrenheit and Kelvin instantly
Unit Converter — Convert length, weight and volume between metric and imperial units
Pomodoro Timer — 25/5/15 Pomodoro focus timer with animated SVG progress ring
Aspect Ratio Calculator — Calculate and lock aspect ratios — find width or height from any ratio
File Size Converter — Convert file sizes between bytes, KB, MB, GB, TB, KiB, MiB and GiB
Timezone Converter — Convert times between world timezones with live mode
Random Picker — Pick random items from a custom list — perfect for decisions and raffles
Number to Words — Convert any number to words in English or Spanish instantly
Reading Time Estimator — Estimate reading time for any text with adjustable reading speed
Date Countdown — Count down to any future date and time with a live seconds display
Coin Flipper — Flip a virtual coin with statistics tracking and flip history
Dice Roller — Roll d4, d6, d8, d10, d12, d20 and d100 dice with history
Online Notepad — Quick scratchpad with auto-save, word count and download as text
Word Wrap — Wrap text at a specific column width with word or character boundary options
Typing Speed Test — Test your typing speed in WPM with accuracy tracking
Barcode Generator — Generate Code 39 barcodes from text and download as PNG
Screen & Browser Info — View real-time screen resolution, window size, browser and device details
LocalStorage Manager — View, add, edit and delete localStorage items with size tracking
Regex Pattern Library — Browse 30+ common regex patterns for email, URL, phone, date and more
Keyboard Tester — Press any key to see its name, keyCode, code and modifier state
Color Blindness Simulator — Simulate how colors appear under 4 types of color vision deficiency
Random Quote Generator — Generate random quotes by category: motivational, programming, wisdom and more
Sleep Cycle Calculator — Calculate optimal wake-up times based on 90-minute sleep cycles
Calorie Calculator — Calculate daily calorie needs using the Mifflin-St Jeor equation
Credit Card Validator — Validate credit card numbers using the Luhn algorithm and detect card type
IBAN Validator — Validate IBAN numbers with mod-97 check and country format verification
Grade Calculator — Calculate weighted course grade from assignments and exams
Meeting Cost Calculator — Calculate the real cost of meetings based on attendees and hourly rate
Invoice Calculator — Create line-item invoices with tax calculation and formatted preview
Body Fat Calculator — Calculate body fat percentage using the US Navy method
Water Intake Calculator — Calculate your recommended daily water intake based on weight and activity

Security (10)

Password Strength Checker — Analyze password strength with entropy, criteria checklist and improvement suggestions
ROT13 Cipher — Encode and decode text with the ROT13 substitution cipher instantly
Base32 Encoder / Decoder — Encode and decode text using RFC 4648 Base32 encoding
Hex Encoder / Decoder — Convert text to hexadecimal bytes and decode hex back to text
Caesar Cipher — Encode and decode text with the Caesar cipher using a custom shift value
Vigenère Cipher — Encode and decode text with the Vigenère polyalphabetic substitution cipher
Atbash Cipher — Encode and decode text with the Atbash mirror cipher (A↔Z, B↔Y)
XOR Cipher — Encode text using XOR cipher with a numeric key and view hex output
CRC32 Checksum Calculator — Calculate the CRC32 checksum of any text in hex, decimal and binary
NanoID Generator — Generate NanoIDs with custom alphabet, size and bulk output

Network (8)

Subnet Calculator — Calculate network address, broadcast, usable hosts and subnet mask from IP/CIDR
IP Address to Binary — Convert IPv4 addresses to binary octets and binary back to IP
URL Builder — Construct URLs from protocol, hostname, path, query parameters and hash
Query String Parser — Parse URL query strings into a key/value table and rebuild them
MIME Type Finder — Find MIME types for any file extension from a searchable database
HTTP Header Builder — Build HTTP request headers from a list of common options and copy them
Common Ports Reference — Searchable reference of 55+ common TCP/UDP ports with service names
MAC Address Generator — Generate random MAC addresses in various formats with bulk output

CSS (8)

Box Shadow Generator — Build CSS box-shadow with sliders and preview on a live element
Border Radius Generator — Set CSS border-radius for each corner with live preview and presets
Flexbox Generator — Configure CSS flexbox properties visually with a live item preview
CSS Grid Generator — Generate CSS grid layouts with column/row templates and gap controls
Text Shadow Generator — Build CSS text-shadow with sliders and see a live text preview
CSS Animation Generator — Build CSS keyframe animations with presets, timing and iteration controls
CSS Filter Generator — Apply and preview CSS filter effects with sliders and visual presets
CSS Unit Converter — Convert between CSS units: px, rem, em, vw, vh, pt, cm and more

Data (8)

CSV Viewer — Paste CSV text and view it as a sortable, formatted table
Data Faker — Generate fake data: names, emails, addresses, phones and more
List Sorter — Sort a list of items alphabetically, by length, numerically or randomly
Number List Statistics — Compute mean, median, mode, variance and more from a list of numbers
Array / Set Operations — Compute union, intersection, difference and symmetric difference of two lists
Duplicate Line Finder — Find duplicate items in a list, see counts and extract unique entries
Tally Counter — Multi-item tally counter with custom labels, increment, decrement and reset
Frequency Analyzer — Analyze character, word or bigram frequencies in any text

Science (8)

Ohm's Law Calculator — Calculate voltage, current, resistance or power using Ohm's law
Speed / Distance / Time — Solve for speed, distance or time with multiple unit options
Density Calculator — Calculate density, mass or volume with metric and imperial unit support
Energy Calculator — Calculate kinetic energy, potential energy, E=mc² and work
Pressure Converter — Convert pressure between Pa, kPa, bar, psi, atm, mmHg and more
Force Calculator — Calculate force, mass or acceleration using Newton's second law (F=ma)
Wavelength Calculator — Calculate wavelength, frequency or speed of light with EM spectrum region
Molar Mass Calculator — Calculate molar mass of chemical formulas with element breakdown

Time (8)

Time Duration Calculator — Add or subtract multiple time durations and get the total in HH:MM:SS
Working Days Calculator — Count working days between dates or find a future date by business days
ISO Date Converter — Convert dates to and from ISO 8601 formats including week and ordinal notation
Week Number Calculator — Find the ISO week number, day of year and day of week for any date
Calendar Generator — Generate a navigable monthly calendar with today highlighted
World Clock — Live clock showing current time in multiple cities around the world
Date Formatter — Format any date in 20+ formats including Unix timestamp and ISO variants
Age in Units — Calculate your age in days, hours, minutes, seconds, heartbeats and breaths

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