Terms of Use & Medical Disclaimer

Last updated: October 2026

These terms apply to your use of mywellnesscalc.com ("My Wellness Calc"). By using the site you agree to them. If you don't agree, please don't use the site.

Medical disclaimer

My Wellness Calc provides general health and fitness information and estimation tools. Nothing on this site is medical advice, diagnosis or treatment, and it is not a substitute for advice from a doctor, registered dietitian or other qualified professional who knows your history.

• Calculator results are estimates based on population-level formulas. Your real values — maximum heart rate, energy needs, body fat, vitamin D status — can differ substantially from any formula.
• Talk to a qualified professional before making significant changes to your diet, supplements or exercise, especially if you are pregnant or breastfeeding, under 18, have a medical condition, or take medication (for example blood-pressure, heart-rate, blood-sugar or blood-thinning medication).
• Stop exercising and seek medical help if you experience chest pain, faintness, unusual shortness of breath or palpitations.
• If you think you may have a medical emergency, contact your local emergency number immediately.

How our content is made

Each calculator states the formula it uses and explains its limitations on the same page. Articles and quizzes are written from published research and guidance from public health bodies such as the NIH Office of Dietary Supplements and the World Health Organization, and from peer-reviewed studies. When we describe a study we aim to give enough detail — the journal, year, size or design — for you to find it yourself.

We check worked examples and reference tables against each page's own calculator code, so the numbers in an article match the numbers the tool gives you. Where the evidence is limited — a single trial, a small sample, an observational association — we say so rather than presenting it as settled.

Corrections

If we find an error we fix it and, for substantive changes, record it here. Recent corrections:

• October 2026 — Best Time to Exercise: our summary of a 2022 Frontiers in Physiology trial said evening training produced larger muscle and strength gains in men. The trial did not report that; it found evening exercise lowered blood pressure and fatigue in men and improved muscular performance in women. The summary and FAQ were rewritten.
• October 2026 — Fat Burning Heart Rate Zone: removed a cited 2023 study we could not verify, and replaced it with a 2025 Sports Medicine review. Added sex-specific (Gulati) and age-adjusted (Tanaka) heart-rate formulas.
• September 2026 — Vitamin D Calculator and How Much Vitamin D Per Day: corrected the children's upper intake limits to the NIH values by age (2,500 IU at 1–3 years, 3,000 IU at 4–8, 4,000 IU from 9), and made the calculator's safety limit change with age.
• September 2026 — Healthy Body Fat Percentage: an FAQ answer gave ranges for women aged 40–59 and 60+ that did not match the chart on the same page; it now matches.

Spotted something wrong? Email canghun13@naver.com and we will review it.

Use of the site

You may use the calculators, quizzes and articles for personal, non-commercial purposes. Please don't copy or republish substantial parts of the content without permission; linking to pages is always welcome. Don't attempt to disrupt the site or access it through automated means that place an unreasonable load on it.

No warranty and limitation of liability

The site is provided "as is". We work to keep the information accurate and up to date but make no guarantee that it is complete, current or error-free. To the extent permitted by law, My Wellness Calc is not liable for any loss or harm arising from your use of, or reliance on, the site or its results.

Advertising and links

The site may show ads and may link to third-party websites. We are not responsible for the content or practices of those sites. How advertising cookies are used is described in our Privacy Policy.

Changes

We may update these terms. The date at the top of this page shows when they last changed.

Contact

Questions about these terms: canghun13@naver.com.