A client-side JavaScript web application to calculate target heart rate zones using the Karvonen formula. Live demo: https://www.globaltoolsbox.online/2026/09/heart-rate-zone-calculator.html
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Updated
Sep 5, 2026
#
fitness-tool
Here are 3 public repositories matching this topic...
Clean, privacy-first US Navy method body fat calculator built with Next.js and Tailwind CSS.
open-source nextjs web-app client-side body-composition tailwindcss privacy-first health-utility body-fat-calculator fitness-tool
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May 29, 2026
Minimalist client-side TDEE, BMR, and macro calculator built using React and Tailwind CSS.
react utility typescript nextjs tailwindcss bmr-calculator macro-calculator tdee-calculator health-calculator fitness-tool
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Updated
May 29, 2026
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