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Nutrition & Sports Medicine calculators

Hydration, protein, sweat rate, caffeine timing, and sport nutrition calculators.

13

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13 of 13 calculators shown

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Nutrition & Sports Medicine

Sweat Rate Calculator

Estimate hourly sweat rate from body-weight change, fluid intake, urine output, and exercise duration to plan safer hydration for training.

Activated — educational sports hydration estimate Sports hydration method 4 sources
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Nutrition & Sports Medicine

Creatine Dose Calculator

Estimate creatine monohydrate loading and maintenance doses from body weight, with practical serving splits and safety notes.

Activated — educational sports nutrition estimate Sports nutrition dosing method 4 sources
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Nutrition & Sports Medicine

Protein Needs for Older Adults Calculator

Estimate daily protein target ranges for adults 65+ using PROT-AGE/ESPEN-style grams-per-kilogram recommendations.

Activated — nutrition guidance estimate PROT-AGE/ESPEN position guidance 2 sources
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Nutrition & Sports Medicine

Max Heart Rate Calculator — Tanaka Formula

Estimate age-predicted maximum heart rate using the Tanaka equation and view broad training-zone ranges.

Activated — age-predicted estimate Published exercise physiology equation 1 source
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Nutrition & Sports Medicine

Carb Loading Calculator

Estimate carbohydrate loading targets for endurance events lasting longer than about 90 minutes using grams per kilogram per day.

Activated — sports nutrition estimate Endurance sports nutrition guidance 2 sources
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Nutrition & Sports Medicine

Marathon Hydration Calculator

Plan a practical endurance-event drinking range from expected race duration, body weight, and target hourly fluid rate.

Activated — endurance hydration planning aid ACSM/NATA sports hydration guidance 3 sources
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Nutrition & Sports Medicine

Kidney Stone Hydration Goal Calculator

Estimate a daily fluid planning target to support a urine-output goal commonly used in kidney-stone prevention counseling.

Activated — prevention-planning estimate AUA kidney stone guideline goal 3 sources
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Nutrition & Sports Medicine

Waist-to-Height Ratio Calculator

Calculate waist-to-height ratio and compare it with NICE central-adiposity categories.

Source-mapped educational formula Guideline-based screening metric 2 sources
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Nutrition & Sports Medicine

Waist-to-Hip Ratio Calculator

Calculate waist-to-hip ratio for abdominal fat distribution screening.

Source-mapped educational formula WHO-reviewed anthropometric measure 2 sources
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Nutrition & Sports Medicine

BMR Calculator — Mifflin-St Jeor

Estimate basal/resting metabolic rate with the Mifflin-St Jeor equation using age, sex, height, and weight.

Activated — resting energy estimate Published predictive equation 2 sources
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Nutrition & Sports Medicine

TDEE Calculator

Estimate total daily energy expenditure by multiplying Mifflin-St Jeor resting energy needs by an activity factor.

Activated — calorie maintenance estimate Predictive equation plus activity factor estimate 2 sources
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Nutrition & Sports Medicine

Body Fat Percentage Calculator — Navy Method

Estimate body fat percentage from circumference measurements using the commonly published U.S. Navy method equations.

Activated — circumference-based body fat estimate Anthropometric body-composition estimate 2 sources
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Nutrition & Sports Medicine

Lean Body Mass Calculator

Estimate lean body mass from height and weight using Boer or Hume predictive equations.

Activated — predictive lean body mass estimate Published predictive equations 3 sources
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