HealthyBMICheck.com offers 11 free health calculators (BMI, calorie needs, macros, body fat, ideal weight, water intake, and more), each built on a specific formula from peer-reviewed research or WHO and CDC guidelines, with sources cited on every page. Everything runs in your browser. Nothing you enter (height, weight, age) is ever sent to a server. No signup, no premium tier, no affiliation with any supplement brand or insurer. Just accurate calculators, explained clearly.

Hey Product Hunt 👋 I built HealthyBMICheck.com after noticing how many health calculator sites online were using outdated formulas, hiding results behind a signup wall, or surrounding sensitive health information with aggressive ads and supplement upsells. We took a different approach. Every calculator on the site, BMI, calorie needs, macros, body fat, ideal weight, and 7 others, is built on a formula from peer-reviewed research or established WHO and CDC guidelines, with sources cited directly on the page. Everything runs entirely in your browser, so nothing you enter about your height, weight, or age ever touches a server. We are not affiliated with any hospital, supplement brand, or insurer, and we have no financial interest in what your result says. The site is ad supported, which is the only thing that keeps it free with no signup required. Would love your feedback, especially if there is a health metric or calculator you think is missing. I'll be reading every comment.

Love that the sources are right there on each page, no digging around. The privacy angle is a nice touch too, feels like these calculators actually respect your data instead of trying to harvest it.

HealthyBMICheck — Free Calculators

11 free health calculators backed by peer-reviewed science

11 free health calculators backed by peer-reviewed science