Building Useful Tools for Maldoy – A Maker’s Side Project
As a creative hobbyist, I'm always looking for ways to combine my love for problem-solving with hands-on tools that make life easier. Over the past few months, I’ve been building a collection of utility tools under the name Maldoy – a side project born from my own technical challenges and curiosity.
These tools were created using HTML, a bit of Python logic, and a lot of trial and error. They are designed to help with electrical work, mechanical conversions, pressure calculations and more — mostly for personal use, but they've proven useful enough to share publicly.
🧰 What’s in the toolbox?
Here’s a quick look at some of the Maldoy tools currently available on my site:
🔌 Cable & Plug Calculator
Determine the correct cable thickness and plug type for a given power load, voltage, and cable length. Super handy when you're working with extension cords or power tools.
📏 Circumference to Diameter Converter
Quickly convert circumference to diameter – great for measuring round objects like shafts, tubes, or 3D prints when you only have a soft tape.
⚙️ Pressure & Volume Converter
Convert between bar, PSI, MPa, liters, gallons and more. Helps with planning air compressors or fluid systems.
💨 Pressure Loss Calculator
Estimate pressure drop in a flexible hose — based on length, diameter, flow rate and an assumed friction factor. Practical for optimizing your tool setup.
🧪 Dilution Calculator
Need to mix chemicals or concentrates? This tool calculates the right ratio between product and water based on a given dilution factor.
📐 Metric ↔ Inch Standard Converter
This is a practical lookup tool (not just math!) to match standard mechanical sizes between millimeters and inches.
🛠️ Why I built them
I’ve often found myself reaching for tools like these — but they were either too complex, hidden behind paywalls, or full of ads. So I decided to build my own: fast, offline-friendly, and clean. Each tool started as a personal need and grew from there.
Plus, it’s a great way to learn. Working on Maldoy has helped me improve my frontend skills, understand more about physics/math behind these conversions, and experiment with web deployment.
📬 What’s next?
More tools, better UI, and perhaps turning this into a proper open-source repo one day. For now, I’ll keep tinkering and sharing what I learn.
Got ideas? Feedback? I’d love to hear from you — just drop a message at info@emphyrio.io
Thanks for reading!
— Emphyrio