Utilitoo
Online tools for everyone
Free online tools for developers, writers, and everyday tasks — JSON formatters, calculators, text utilities, and more. Fast, private, no signup required. New tools added regularly — free to use, with optional Pro coming soon.
Categories
Developer Tools
JSON, encoding, regex, and dev utilities
Time Tools
Timezones, timers, and date calculators
Calculators
Financial, math, and everyday calculators
Text Tools
Word count, case conversion, and text utilities
Security Tools
Passwords, hashing, and encryption utilities
File Tools
PDF, image, and file conversion tools
Available now (32 tools)
JSON Formatter
Format and beautify JSON online instantly.
JSON Validator
Validate JSON syntax and find errors instantly.
JSON Minifier
Minify JSON by removing whitespace.
Base64 Encode / Decode
Encode and decode Base64 strings instantly.
JWT Decoder
Decode JWT tokens and inspect claims.
UUID Generator
Generate random UUID v4 identifiers.
Hash Generator
Generate SHA-256 and MD5 hashes from text.
URL Encoder / Decoder
Encode and decode URL strings and query parameters.
HTML Escape / Unescape
Escape or unescape HTML entities.
Markdown Viewer
Preview Markdown as formatted HTML in real time.
CSV Viewer
View and inspect CSV data in a table.
Regex Tester
Test regular expressions against sample text.
Diff Checker
Compare two texts and highlight differences.
Timestamp Converter
Convert Unix timestamps to dates and back.
User Agent Parser
Parse browser user agent strings.
Color Converter
Convert colors between HEX, RGB, and HSL.
Date Difference Calculator
Calculate days between two dates.
Age Calculator
Calculate exact age from birth date.
Percentage Calculator
Calculate percentages, increases, and decreases.
Tip Calculator
Calculate tips and split bills.
Word Counter
Count words, characters, sentences, and paragraphs.
Character Counter
Count characters with and without spaces.
Case Converter
Convert text between upper, lower, and title case.
Remove Duplicate Lines
Remove duplicate lines from text.
Remove Extra Spaces
Trim and normalize whitespace in text.
Text Sorter
Sort lines of text alphabetically.
Slug Generator
Generate URL-friendly slugs from text.
Reverse Text
Reverse text character by character.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text.
Password Generator
Generate strong random passwords.
Password Strength Checker
Check how strong your password is.
Token Generator
Generate secure API tokens and secrets.