Back to feed
Dev.to
Dev.to
6/28/2026
The original title is: "I Built a Unit Converter in Pure Vanilla JS — 7 Categories, 70+ Units, 165 Tests, Zero Dependencies"

The original title is: "I Built a Unit Converter in Pure Vanilla JS — 7 Categories, 70+ Units, 165 Tests, Zero Dependencies"

Original: I Built a Unit Converter in Pure Vanilla JS — 7 Categories, 70+ Units, 165 Tests, Zero Dependencies

Short summary

Author built a production-grade unit converter in vanilla JavaScript supporting 70+ units across 7 categories with zero dependencies, no tracking, and 165 passing tests. Covers linear conversions and non-linear cases like temperature offset arithmetic. Full implementation walkthrough with comprehensive testing strategy included.

  • •70+ units across 7 categories (length, weight, temperature, volume, area, speed, data)
  • •Zero dependencies, runs entirely in browser with no tracking or server calls
  • •Includes 165 comprehensive tests and teaches non-linear conversion patterns (e.g., Celsius-Fahrenheit offset arithmetic)

Generated with AI, which can make mistakes.

#product-launch#open-source
Read full article at Dev.to

Is this a good recommendation for you?

Comments

Failed to load comments. Please try again.

Explore more

I Built a Browser-Only Timestamp Converter — Epoch ↔ Date, 30+ Timezones, DST-Aware, 124 Tests
Dev.to
I Built a File Converter That Handles 16 Formats in the Browser — No Upload Required
Dev.to
The original title is "Building a lightweight health calculator site with vanilla JS and ad-based monetization"
Dev.to
I Built a Privacy-First Calculator Platform With Zero Tracking — Here's the Architecture
Dev.to