Health & Fitness Calculators – Nutrition, Body, Energy & Pregnancy Tools
Instantly compute calories, macros, BMI, BMR, pregnancy, fat/protein/carb needs, TDEE, pace, and more. Perfect for trainers, dietitians, athletes, and students.
Nutrition & Macro Calculators
Carbs Calculator
Find daily carbohydrate targets for goals or diet types.
Protein Calculator
Optimal daily protein for fitness, strength, or vegetarian diets.
Fat Intake Calculator
Calculate personalized fat grams for health, keto, or macros.
Macro Calculator
Split calories into protein, carbs, and fat (IIFYM) instantly.
Protein Requirement Calculator
Figure your recommended daily protein based on life stage/activity.
How to Calculate Caloric Needs
Guide to daily calorie targeting for weight gain, loss, or maintenance.
Energy, Weight & Fitness Calculators
BMI Calculator
Instantly check your body mass index (BMI) – fast online!
Pace Calculator
Plan average walking, running, or swim pace for race day or workouts.
TDEE Calculator
See your true daily calorie usage with all activity included.
Maintenance Calorie Calculator
Work out calories needed to keep your weight consistent.
EER Calculator
Human energy needs for all ages, lifestyles, or fitness routines.
Target Heart Rate Calculator
Optimize exercise with max and target HR zones for any age.
Pregnancy, Cycle & Advanced Health
Advanced Period Calculator
Forecast cycles and ovulation, track fertile window for planning.
Advanced Conception Calculator
Predict conception dates for family planning or fertility.
Ovulation Calculator
Get likely ovulation days—track, conceive, or avoid pregnancy.
Due Date Calculator
Fast due date finder from LMP or conception date—pregnancy week-by-week.
Pregnancy Weight Gain Calculator
Smart, healthy weight gain guidance for every pregnancy phase.
Pregnancy Calculator
Track trimesters, due dates, progress easily and clearly.
Birthday Calculator
Calculate birthdays, age differences, and major milestones.
Advanced/Athletic Health Calculators
Advanced TDEE Calculator
Detailed daily energy calculations for athletes and intense training.
Advanced Fat Intake Calculator
Personalized/fine-tuned fat goals for advance plans or keto diets.
Advanced Protein Calculator
Pro-grade protein macro planner for sports or bodybuilding.
Advanced Carbohydrate Calculator
Athlete-ready advanced calculator for endurance or custom plans.
Advanced Macro Calculator
All macros calculated for science-based or advanced nutrition.
Highly Advanced Pace Calculator
Elite pace breakdowns for split, interval and long distance.
Highly Advanced Ideal Weight Calculator
Detailed weight analysis for advanced, bodybuilding, or medical use.
Highly Advanced BMR Calculator
Basal metabolic rate calculations for athletic/medical pro use.
Highly Advanced Body Fat Calculator
Detailed body fat and composition calculator for elite progress tracking.
Highly Advanced Calorie Calculator
Total calorie calculations for complex training and pro plans.
Advanced BMI Calculator
BMI tailored for bodybuilders, beyond basic measurements.