Health & Fitness

175 tools

BMI, calorie and other everyday health and fitness calculators.

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All Health & Fitness Tools

Showing 1–24 of 175

20/20 Vision Calculator
Convert a Snellen visual acuity fraction (e.g. 20/40) between imperial, metric, and decimal notation.

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26 views

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A1c Calculator
Convert hemoglobin A1c to average blood sugar (mg/dL and mmol/L), or the reverse, using the ADA-published ADAG formula.

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33 views

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Aa Gradient Calculator
Calculate the alveolar-arterial (A-a) oxygen gradient from FiO2, atmospheric pressure, PaCO2, and PaO2.

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39 views

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ABI Calculator
Calculate the Ankle-Brachial Index (ABI) from ankle and arm systolic blood pressure readings.

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30 views

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ABSI Calculator
Calculate A Body Shape Index (ABSI) from your waist, height, and weight — a research metric that adjusts waist size for BMI and height.

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27 views

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Absolute Eosinophil Count Calculator
Convert a differential eosinophil percentage into an absolute count using WBC count.

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34 views

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Absolute Lymphocyte Count Calculator
Convert a differential lymphocyte percentage into an absolute count using WBC count.

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28 views

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Absolute Reticulocyte Count Calculator
Convert a reticulocyte percentage into an absolute count using RBC count.

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24 views

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Added Sugar Intake Calculator
Compare your daily added sugar intake against the AHA and WHO recommended limits.

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22 views

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Adjusted Age Calculator
Calculate a premature infant's adjusted (corrected) age from birth date and gestational age at birth.

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24 views

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Adjusted Body Weight Calculator
Calculate adjusted body weight (ABW) from ideal body weight and actual weight, using the standard clinical reference formula.

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24 views

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Adrenal Washout Calculator
Calculate absolute and relative adrenal CT washout percentages from Hounsfield unit attenuation values.

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28 views

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Age-Adjusted D-dimer Calculator
Calculate the ADJUST-PE age-adjusted D-dimer reference cutoff for patients over 50.

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25 views

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AHI Calculator
Calculate the Apnea-Hypopnea Index (AHI) from sleep study event counts and classify severity per AASM bands.

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21 views

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Albumin Creatinine Ratio Calculator
Calculate the urine Albumin-to-Creatinine Ratio (ACR) in mg/g or mg/mmol.

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17 views

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Albumin Globulin Ratio Calculator
Calculate the A/G ratio from total protein and albumin lab values.

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25 views

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Allowable Blood Loss Calculator
Estimate allowable blood loss (ABL) from estimated blood volume and hematocrit values.

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24 views

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Anion Gap Calculator
Calculate the anion gap from sodium, chloride, and bicarbonate, with an optional potassium-inclusive variant.

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22 views

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APGAR Score Calculator
Calculate the standard 5-criteria APGAR score for newborns at 1 and 5 minutes.

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25 views

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Army Body Fat Calculator
Estimate body fat percentage using the US Army tape-test method, based on height, neck, waist, and (for women) hip measurements.

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22 views

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Ast Alt Ratio Calculator
Calculate the AST/ALT ratio (De Ritis ratio) from liver enzyme lab values.

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21 views

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AUDIT Score Calculator
Score the full standard 10-question WHO AUDIT alcohol use questionnaire.

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16 views

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AUDIT-C Calculator
Score the standard 3-question AUDIT-C alcohol use screening questionnaire.

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21 views

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Baby Formula Calculator
Estimate daily infant formula volume from baby's weight using standard general feeding guidance.

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24 views

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Frequently asked questions

The Health & Fitness category currently has 175 tools — see the full list above.

Yes — every tool in this category is free, with no signup and no watermarks on generated documents.

Yes. As new tools are published in this area, they appear here automatically.