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Dev.to
7/17/2026
The original title is "Building a lightweight health calculator site with vanilla JS and ad-based monetization"

The original title is "Building a lightweight health calculator site with vanilla JS and ad-based monetization"

Original: I Built a Free Health Calculator Website with Pure HTML/CSS/JS - Here's How I Monetize It

Short summary

A developer built a free health calculator website using vanilla HTML, CSS, and JavaScript with no frameworks or build steps. The site includes BMI, calorie, BMR, body fat, and ideal weight calculators, all running client-side. Monetization comes from Google AdSense, JD.com affiliate links, and donations, with SEO optimized via structured data and Lighthouse scores above 95.

  • •Five client-side health calculators built with vanilla HTML/CSS/JS, no frameworks
  • •Monetization via AdSense, JD.com affiliate links, and Buy Me a Coffee donations
  • •SEO focused on structured data, sitemaps, and Lighthouse 95+ performance scores

Generated with AI, which can make mistakes.

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