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28 Evidence-Based Health & Fitness Calculators

Calculadoras de Salud y Fitness

Seleccione cualquier herramienta para acceder a su cálculo dedicado con fórmulas clínicas oficiales y estándares validados.

Filtrar por categoría:
Body & Weight

BMI Calculator

Quetelet Index (BMI = kg/m²)

Calculate your Body Mass Index (BMI) and determine your healthy weight category.

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Body & Weight

Body Fat Calculator

U.S. Navy Circumference Method

Estimate your body fat percentage and lean muscle mass using the U.S. Navy circumference method.

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Body & Weight

Ideal Weight Calculator

Devine & Robinson Equations

Compute your ideal body weight based on Devine, Robinson, Miller, and Hamwi equations.

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Body & Weight

Healthy Weight Calculator

WHO BMI 18.5 – 24.9 Standard

Find the optimal weight range for your height based on medical standards.

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Body & Weight

Army Body Fat Calculator

DoD / AR 600-9 Military Standard

Check compliance with U.S. Army Body Composition Program (AR 600-9) tape test standards.

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Body & Weight

Lean Body Mass Calculator

Boer, James & Hume Equations

Calculate your lean body mass (LBM) using the Boer, James, and Hume formulas.

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Body & Weight

Body Type Calculator

Body Proportions Anthropometry

Identify your body shape (Hourglass, Pear, Rectangle, Inverted Triangle, Apple).

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Nutrition & Diet

Calorie Calculator

Mifflin-St Jeor Equation

Determine daily caloric requirements to maintain, lose, or gain weight safely.

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Nutrition & Diet

BMR Calculator

Mifflin-St Jeor & Harris-Benedict

Calculate your Basal Metabolic Rate (BMR) - the calories burned at complete rest.

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Nutrition & Diet

TDEE Calculator

BMR × Physical Activity Factor (PAL)

Compute your Total Daily Energy Expenditure (TDEE) based on activity and metabolic rate.

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Nutrition & Diet

Macro Calculator

Caloric Macronutrient Ratio Distribution

Calculate daily carbohydrate, protein, and fat grams for your fitness goals.

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Nutrition & Diet

Protein Calculator

ACSM / ISSN Clinical Guidelines

Find the optimal daily protein intake for muscle building, fat loss, or health maintenance.

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Nutrition & Diet

Carbohydrate Calculator

Dietary Guidelines & ISSN Recommendations

Calculate recommended daily carbohydrate intake based on athletic activity.

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Nutrition & Diet

Fat Intake Calculator

20-35% Total Daily Calorie Standards

Calculate healthy dietary fat targets and saturated fat limits.

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Fitness & Clinical

Pace Calculator

Pace = Time ÷ Distance

Calculate running/walking pace, time, or distance for 5k, 10k, marathon, or custom distances.

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Fitness & Clinical

Calories Burned Calculator

Calories = Duration × (MET × 3.5 × Weight / 200)

Estimate calories expended during over 25 activities including running, cycling, swimming, and gym.

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Fitness & Clinical

One Rep Max Calculator

Brzycki & Epley 1RM Equations

Calculate your maximum single-repetition lift (1RM) and percentage training rep ranges.

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Fitness & Clinical

Target Heart Rate Calculator

Karvonen Heart Rate Reserve (HRR)

Find your 5 aerobic training heart rate zones using the Karvonen formula.

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Pregnancy & Women's Health

Pregnancy Calculator

ACOG Gestational Age Standard

Track pregnancy progress, current week, trimester, and key developmental milestones.

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Pregnancy & Women's Health

Due Date Calculator

Naegele's Rule (LMP + 280 Days)

Calculate estimated date of delivery (EDD) based on LMP, conception, or IVF date.

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Pregnancy & Women's Health

Pregnancy Weight Gain Calculator

Institute of Medicine (IOM) Guidelines

Track healthy weekly weight gain targets during pregnancy based on pre-pregnancy BMI.

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Pregnancy & Women's Health

Ovulation Calculator

Luteal Phase (14 Days Prior to Menses)

Find your most fertile days and estimated ovulation dates for the next 6 cycles.

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Pregnancy & Women's Health

Conception Calculator

Ovulation & Viability Window Standard

Find the best dates for intercourse to achieve conception, or calculate when conception occurred.

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Pregnancy & Women's Health

Pregnancy Conception Calculator

Gestational Reverse Dating (EDD - 266 Days)

Back-calculate probable conception and intercourse dates from your expected due date.

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Pregnancy & Women's Health

Period Calculator

Menstrual Cycle Forecasting Algorithm

Predict your next menstrual period dates, cycle lengths, and PMS windows.

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Fitness & Clinical

GFR Calculator (Kidney Function)

2021 CKD-EPI Creatinine Equation

Estimate Glomerular Filtration Rate (eGFR) and kidney disease stage from serum creatinine.

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Fitness & Clinical

Body Surface Area (BSA) Calculator

Mosteller Formula: √(Height × Weight / 3600)

Calculate total body surface area (m²) used for medical dosage and cardiac index.

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Fitness & Clinical

BAC Calculator (Blood Alcohol Content)

Widmark Alcohol Elimination Formula

Estimate Blood Alcohol Concentration (BAC), impairment level, and hours until sober.

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Evidence-Based Clinical Formulations: All 28 calculation algorithms are derived from official clinical publications including the World Health Organization (WHO), Centers for Disease Control (CDC), Institute of Medicine (IOM), American College of Obstetricians and Gynecologists (ACOG), National Kidney Foundation (2021 CKD-EPI), and U.S. Army Body Composition Program (ALARACT 046/2023).
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