Editorial process

Honest about what this is — and what it isn't.

TheHealthTools.com is an independent project that implements published clinical formulas in the browser. It is not a medical practice. The site is currently maintained by TheHealthTools team— not by a licensed clinician. We think it's more useful to say that plainly than to invent credentials, and we've built the editorial process around that honesty.

What we do

• Implement formulas accurately. Every calculator on this site is a TypeScript implementation of a published clinical formula, with the exact equation listed on the methodology page.
• Cite the original source. Each tool links to the peer-reviewed paper or guideline document the formula comes from (WHO, CDC, NHS, AHA, KDIGO, ACOG).
• Use the most current published version. When a guideline body issues an update — like the CKD-EPI 2021 race-free eGFR equation that replaced the 2009 version — we revise the code and note the change in the methodology update log.
• Write conservative interpretation copy. Result messages stick close to what the published guideline says. They don't add original medical opinion.
• Fix corrections fast. Anyone can flag an error and we acknowledge within a few days.

What we don't do

• Diagnose anything. A calculator output is not a diagnosis. Every result page reminds you to consult a qualified physician (US) or GP (UK) before acting on a number.
• Provide individualized medical advice. The site can't see your full health picture. A formula is a starting point, not an answer.
• Claim medical authorship we don't have. If and when a licensed clinician joins as a formal reviewer, we'll say so on this page with their real name, real credentials, and a link to a real public profile. Until then, this site is a calculator, cited from sources you can verify yourself.

Why this approach is fine

Calculator sites have existed for decades without a credentialed author behind every page. The relevant question isn't "who reviewed this?" but "is the formula correctly implemented and clearly cited?". We answer the second question on every page.

We do plan to add quarterly clinical review as the site grows. If you're a clinician interested in helping, get in touch — we pay for review work and credit you on every relevant page.

Flag a correction

Email hello@thehealthtools.com with the calculator name, the issue, and (ideally) a citation. We acknowledge within a few days.

See the methodology page for per-calculator citations and the about page for our editorial principles.