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RaphaAtlas

Health calculators and lab-result checkers that show their work

25 free tools for calories, macros, protein foods, supplements, body composition and common blood and urine tests. Every guide on the site comes with its own tool. Each one names its formula or source, states its limits, and is written and reviewed by MBBS physicians.

Browse all calculatorsMeet the review board
  • Written by an MBBS physician
  • Reviewed by a second MBBS physician
  • Formula and sources on every page
  • Free, no sign-up

Start here if you know what you want to work out.

See every tool →
NutritionCalorie CalculatorYour daily maintenance calories, with a likely range and targets to lose or gain.Calculate →NutritionMacro CalculatorDaily protein, carb and fat targets in grams.Calculate →BodyBody Type CalculatorYour body shape from bust, waist and hip, and how close you are to the next one.Calculate →Lab resultsCreatinine CheckerYour result against the normal range by age, sex and lab.Check a result →Lab resultsA1C Result CheckerNormal, prediabetes or diabetes band in %, mmol/mol and estimated average glucose.Check a result →AlcoholBAC CalculatorEstimated blood alcohol level and time until sober.Calculate →

Find a tool by what you need

Every calculator and checker on the site, grouped by the question it answers.

Nutrition and weight

How much to eat, what it is made of, and what you burn.

Lab results

Put a number from your report in context, and see when it needs a call.

Body and fitness

Shape, composition and strength, measured with a tape, a bar and a belt.

Pregnancy and alcohol

Dates and levels people search for at awkward moments.

Why you can check the number

Published equations only

Every result comes from a named formula or a named dataset, and the page says which one, so you can rerun it yourself.

Tested against the page

Before a tool goes live, its outputs are run against every worked example on the page. If the copy and the tool disagree, the page does not ship.

Limits stated up front

Each tool says who it is not accurate for and when to see a clinician instead. An estimate is not a diagnosis.

Who is behind RaphaAtlas

Two MBBS physicians write and review every tool and article. Our editorial policy sets out how sources are chosen, how errors are corrected, and what we will not publish.

Read the editorial policyAbout us
Dr. Muhammad Awais Rabbani, MBBS
Author. Physician and operator of a US medical-billing company.
Dr. Ahmed Humayon, MBBS
Medical reviewer. Medical Review Board

Read by topic

Guides that sit behind the numbers, each with its own tool.

NutritionCalories, macros, protein foods and supplements.HealthLab results, screening and what matters.FitnessTraining, cardio and strength, with a plan.LifestyleSleep, alcohol, water and daily movement.