As developers, we waste too much time on tiny tasks:
Converting HEX colors to RGB
Turning Markdown into HTML
Calculating aspect ratios
Fixing mouse sensitivity when switching games
Looking up shoe size charts
Running a Pomodoro timer in yet another app
Most existing tools are:
Bloated
Ad-heavy
Locked behind paywalls
Or surprisingly inaccurate
So I built HNGTools—a lightweight collection of free online converter tools focused on speed, accuracy, and developer experience.
Below are 7 practical tools developers, designers, and creators can use daily.
HEX to RGB Color Converter (Frontend Essential)
🔗 https://www.hngtools.com/hex-to-rgb-color-converter
If you write CSS or work with UI design, converting HEX to RGB is unavoidable.
Why this tool matters:
Instant hex color to rgb conversion
No frameworks, no popups
Accurate output for production CSS
Use cases:
CSS & Tailwind configs
Design system tokens
UI/UX handoff
Markdown to HTML Converter (Docs & Blogging)
🔗 https://www.hngtools.com/markdown-to-html-converter
Markdown is the default for:
GitHub READMEs
Technical documentation
Static site generators
Developer blogs
This tool converts Markdown to clean HTML instantly—without installing anything.
Best for:
Dev bloggers
Documentation writers
CMS users
SEO-focused content creators
Pomodoro Timer (For Deep Work)
🔗 https://www.hngtools.com/pomodoro-timer
Deep work matters more than ever.
This Pomodoro Timer is built for developers who want:
Fewer distractions
No login
No notifications spam
Ideal for:
Coding sessions
Study blocks
Remote work
Freelancers
Shoe Size Converter (Surprisingly Useful)
🔗 https://www.hngtools.com/shoe-size-converter-convert-menswomens
Not everything we build has to be “dev-only.”
This shoe size converter solves a real-world problem:
Men↔Women size conversion
US, UK, EU size comparison
Accurate and fast
Perfect for:
E-commerce devs
International users
Anyone buying shoes online
Morse Code Converter (Learning & Fun)
🔗 https://www.hngtools.com/morse-code-converter-text-to-morse-code
Morse code still appears in:
Education
Programming challenges
Radio & signal learning
Fun dev experiments
This tool converts text to Morse code instantly.
Pixels to Aspect Ratio Calculator (Design & Video)
🔗 https://www.hngtools.com/pixels-to-aspect-ratio-calculator
Aspect ratio mistakes break:
Layouts
Images
Thumbnails
Videos
This calculator converts pixel dimensions to aspect ratio with precision.
Great for:
Frontend developers
YouTube creators
Designers
Video editors
Mouse Sensitivity Converter (Gamers & Devs)
🔗 https://www.hngtools.com/sens-converter-mouse-sensitivity
If you game (many devs do), muscle memory matters.
This mouse sensitivity converter helps you:
Convert sensitivity across games
Maintain consistent aim
Adjust DPI accurately
Why HNGTools?
HNGTools is built with a developer-first mindset:
⚡ Fast & lightweight
🔒 No signups
📱 Mobile-friendly
🧪 Accurate calculations
🚫 No dark UX patterns
No tracking nonsense.
No premium traps.
Just useful tools.
Final Thoughts
We build complex systems—but often need simple tools.
If you’re tired of:
Googling the same converters
Fighting ads
Opening bloated apps
Bookmark https://www.hngtools.com
It’s a growing toolbox—and more dev-focused utilities are coming.
Feedback Welcome
If you’re a developer:
What tool do you use daily?
What converter would you like next?
Let’s build tools that respect developers’ time.
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