OnHub is a clean collection of free online tools: calculators, generators and converters. Built for speed, privacy and mobile usability — no registration required.
Free countdown timer that runs inside your browser. Perfect for studying, workouts and tasks.
Count words and characters instantly. Useful for writers, students, SEO content and social posts.
Calculate your BMI in seconds and understand common BMI categories. Informational tool only.
Fast percentage math: X% of Y, percent change, increase and decrease calculations.
Create strong and secure passwords instantly. Safer accounts start with better passwords.
Generate QR codes for links or text. Great for sharing websites, Wi-Fi, menus and events.
Convert units quickly: length, weight and more. Simple and fast conversion without apps.
Convert text to uppercase, lowercase, sentence case and more. Works instantly on any device.
Pick and convert colors easily. Copy HEX, RGB values fast for design and development.
Generate random numbers for games, choices, testing and daily tasks.
Calculate age in years, months and days. Great for documents and planning.
Compress images quickly to reduce file size. Useful for websites and social sharing.
Check weather quickly and plan your day. Designed for fast loading on mobile.
Create WhatsApp chat links easily and share them for business or personal use.
Preview YouTube thumbnails quickly. Useful for creators and video editors.
Many “online tools” websites look simple, but they are heavy and slow. OnHub is built differently: lightweight pages, consistent UI, and fast performance. We focus on the user experience — open a tool, get results, and move on.
Most tools on OnHub run directly in your browser (client-side), which helps keep your data private. You do not need to create an account, and we avoid unnecessary tracking or confusing steps.
If you want more tools added, check the About page and send a message via Contact. We continuously improve OnHub with new features and new utilities.
OnHub is a collection of free online tools designed to help you solve daily tasks faster. Below are answers to common questions about usage, privacy, and supported devices.
Yes. All tools on OnHub are free and work without registration.
No. Most tools run in your browser, so your input is not stored on our servers.
Yes. The website is responsive and works smoothly on phones, tablets, and desktops.
Because we avoid heavy frameworks and keep our pages optimized and lightweight.
Online Timer, Word Counter, BMI Calculator, Password Generator, and QR Code Generator are top tools.
Yes. You can contact us via the Contact page and share your suggestion.