Info

Alex Chen

Senior engineer specializing in developer tools and interactive web applications. 12+ years building calculators, converters, and productivity software.

About Alex

Alex has been building interactive web tools since the jQuery era. With a background in computational mathematics, he focuses on making complex calculations feel simple.

Expertise

  • Calculator algorithms and numerical methods
  • Unit conversion systems and dimensional analysis
  • Performance optimization for client-side computation
  • Accessibility (WCAG 2.1 AA)

Approach

Every tool Alex builds goes through three rounds of review:

  1. Formula verification against academic or industry standards
  2. Edge-case testing (zero, negative, extreme values)
  3. UX review: can a first-time user get results in under 10 seconds?

“The best tool is the one you forget is there. You type, it works, you move on.”

Alex has reviewed and verified the calculator and converter tools on this site.