About IndexBody
IndexBody is a free health calculator platform built to give everyone access to the same evidence-based formulas used by fitness professionals and healthcare educators. Our 31 calculators cover BMI, body fat, calorie needs, macronutrient targets, TDEE, protein requirements, hydration, sleep, and more — all grounded in publicly available clinical research from organisations including the WHO, CDC, NIH, and peer-reviewed academic journals.
Every calculator result is computed entirely in your browser using JavaScript. No inputs, measurements, or personal data are ever transmitted to our servers or stored in any database. Your privacy is protected by design, not by policy.
What We Can Help With
We welcome messages on any of the following:
- Calculator accuracy questions — if you believe a formula produces incorrect results, we want to know. Include your inputs and the result you received.
- Content corrections — if you find an error in any of our articles or calculator explanations, please report it with a reference to the correct information.
- Business and partnership inquiries — advertising, calculator licensing, content partnerships, or press and media requests.
- Feature requests — suggestions for new calculators or tools you would find useful.
- General feedback — anything that would help us improve the site.
What We Cannot Help With
IndexBody is an educational platform, not a healthcare provider. We are not able to:
- Provide personalised medical, nutritional, or fitness advice
- Interpret individual calculator results in the context of specific health conditions
- Recommend specific medications, supplements, or medical treatments
- Replace a consultation with a qualified physician, registered dietitian, or certified trainer
For health-related decisions based on your calculator results, please consult a qualified healthcare professional. See our full disclaimer for important information about the limitations of our tools.
Response Time
We aim to respond to all messages within 2–3 business days. For content correction requests that affect accuracy, we prioritise these and aim to review and respond within 24 hours.
For privacy-related requests under GDPR or CCPA, please indicate this in your message subject line and we will respond within the required timeframe.