Why I Bundled My Small JavaScript Calculators Into One Practical Kit

Over the last few weeks, I built a few small calculators as side projects:

• A BMI calculator
• An EMI calculator
• A simple interest calculator

Each one was built using plain HTML, CSS, and vanilla JavaScript.

After finishing them, I realized something —
They actually make more sense together than separately.

The original goal wasn’t to create products.

I wanted to:

• Practice JavaScript logic
• Improve UI clarity
• Build small, finished tools instead of half-done apps

The problem with single-use tools

Individually, these calculators are useful.

But on their own, they feel incomplete —
especially for beginners or small projects that need more than one utility.

That’s when bundling started to make sense.

Why bundling worked better

Bundling the calculators helped me:

• Create a consistent UI style
• Reuse structure and logic
• Think in terms of systems, not just features

What’s included

• BMI Calculator
  
  Clean BMI calculation with instant results

• EMI Calculator
  
  Monthly EMI calculation with simple inputs

• Interest Calculator
  
  Simple and compound interest calculations

All tools:

• Work offline
• Are mobile responsive
• Use only HTML, CSS, and vanilla JavaScript

This bundle is especially useful for:

• Students learning JavaScript
• Beginner developers building small projects
• Bloggers or educators who need simple calculators
• Anyone who prefers clean, dependency-free tools

What I learned

• Small tools feel more valuable when grouped
• Consistency across tools matters more than features
• Finishing and packaging is a skill on its own

I’m continuing to build and refine small web tools like these,
focusing on clarity, speed, and usefulness.

If you’re also building small things,
I’d love to hear how you package or reuse your projects.