Utility Hub
Free, fast online tools for everyday tasks.
A practical collection of developer tools, text utilities, calculators, and generators — built for speed, simplicity, and immediate browser-based use.
Popular Tools
A curated selection of our most frequently used utilities.
- Developer Tools
JSON Formatter
Pretty-print JSON with configurable indentation and syntax highlighting.
- Developer Tools
Regex Tester
Test regular expressions against text with live match highlighting.
- Text Tools
Word Counter
Count words, characters, sentences, and paragraphs instantly.
- Text Tools
Character Counter
Count characters with and without spaces, useful for social media limits.
- Calculators
Percentage Calculator
Calculate percentages, increases, decreases, and differences.
- Generators
Password Generator
Generate strong, random passwords with custom length and character rules.
Browse by Category
Explore our complete suite of browser-based utilities organized by domain.
Developer Tools
Formatters, encoders, decoders, and utilities for everyday development tasks.
13 tools →
Text Tools
Word counters, case converters, line sorters, and other text utilities.
7 tools →
Calculators
Percentage, age, date, discount, tip, and unit calculators.
6 tools →
Generators
Password, random number, random name, and data generators.
3 tools →
Guides & Articles
Practical tutorials, comparisons, and reference guides to help you understand formats and concepts.
How to Create a Strong Random Password
What makes a password strong, why length and randomness matter more than complexity tricks, and how to manage passwords securely.
How to Calculate a Tip and Split the Bill: Formulas, Etiquette, and Mental Math
Learn how to calculate tips accurately, split bills fairly among groups, navigate pre-tax vs post-tax tipping etiquette, and use quick mental math shortcuts.
What Is a UUID? UUID v4, v1, and v7 Explained with Collision Probability
A comprehensive guide to UUIDs and GUIDs: RFC 4122 structure, UUID v4 randomness, collision math, v1 vs v4 vs v7 comparisons, and code examples across modern languages.
Why Utility Hub?
Designed for speed, simplicity, and reliable daily use.
Free to Use
Every tool is completely free with no paywalls, accounts, subscriptions, or credit cards required.
Fast
Instant results without unnecessary network round-trips. Your calculations and conversions happen immediately.
Browser-Based
Tools run directly inside your web browser using modern web standards, with no software downloads needed.
Simple Interface
Distraction-free, clean designs focused on getting your task done quickly and without confusing clutter.
Privacy-Conscious
Designed to process your tool inputs locally in your browser session rather than storing them on backend databases.