All Free Tools

    Browse all our free health calculators, unit converters, care planning tools, and safety checklists.

    Health Calculators & Converters

    BMI Calculator

    Calculate your Body Mass Index and understand your weight category.

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    Blood Pressure Checker

    See which category your blood pressure reading falls into (educational).

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    Calorie Needs Estimator

    Estimate daily calorie needs based on age, sex, weight, height, and activity.

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    Daily Water Intake

    Estimate daily water intake based on weight, activity level, and climate.

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    Protein Needs Estimator

    Estimated daily protein target range for older adults (educational).

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    Cholesterol Ratio Calculator

    Enter Total Cholesterol + HDL to calculate Total/HDL ratio and quick category guidance.

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    LDL (Friedewald) Calculator

    Estimate LDL from Total Chol, HDL, Triglycerides (with validation).

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    A1C ↔ eAG Converter

    Convert HbA1c (%) to estimated average glucose (mg/dL).

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    Resting Heart Rate Checker

    Classify RHR and show simple wellness guidance + tracking suggestion.

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    Zone 2 Heart Rate Calculator

    Zone 2 range plus all five training zones (Karvonen method).

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    Body Temperature Checker

    Interpret temp for adult vs child vs older adult with guidance.

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    Pounds ↔ Kg Converter

    Two-way conversion between pounds and kilograms.

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    Cm ↔ Feet/Inches Converter

    Convert height between centimeters and feet/inches.

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    Fahrenheit ↔ Celsius

    Convert temperatures for health tracking and medical records.

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    Blood Sugar Converter

    Convert blood glucose readings between mg/dL and mmol/L.

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    Creatinine Converter

    Convert creatinine values between mg/dL and µmol/L.

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    Medication Dose Converter

    Convert mg to mL using concentration - common caregiver need.

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    Oxygen Tank Duration

    Estimate how long an oxygen tank lasts based on tank size + flow rate.

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