About Class-Run
Class-Run is a free calculator platform for health screening, metabolism planning, and everyday finance — built for clarity, speed, and responsible education.
Our purpose
We help people turn numbers into next steps: BMI screening, BMR and TDEE estimates, macro planning, loans, interest, and practical converters — without sign-up or paywalls on core tools.
Why health calculators?
Body weight and energy balance questions are among the most searched health topics online. We provide transparent equations, plain-language interpretation, and internal links so users can move from screening (BMI) to planning (BMR → TDEE → calories) in one session.
Why finance calculators?
Households need quick, honest math for loans, tips, tax estimates, and savings goals. Our finance tools emphasize formulas and limitations — not sales pitches — so visitors can compare scenarios before talking to professionals.
Free access
All calculators run in your browser. We fund the site through advertising (Google AdSense) while keeping tools free to use.
Content & update policy
- Calculator logic follows widely cited public formulas (e.g. Mifflin–St Jeor for BMR).
- We review pages when guidelines, tax rules, or UX standards change materially.
- Last substantive site review: June 2026.
Editorial standards
Content is educational, not medical, legal, or financial advice. We state limitations (e.g. BMI and athletes), link related tools, and encourage professional consultation for YMYL decisions.
How we help users
Live calculators, category hubs, FAQs, and cross-links reduce guesswork. Our goal is fewer dead-end visits and more informed follow-up — whether that means a clinician, a dietitian, or a licensed advisor.