What health and fitness calculators does NeftCal offer?

NeftCal offers 34 free health and fitness calculators across body composition, nutrition, fitness & training, pregnancy, and medical & clinical tools — including BMI, Body Fat, Army Body Fat, BMR, TDEE, Macro, Carbohydrate, One Rep Max, VO2 Max, Ovulation, GFR, Body Surface Area, BAC, and Pregnancy Due Date calculators.

What's the difference between the BMR and TDEE calculators?

The BMR (Basal Metabolic Rate) Calculator estimates the calories your body burns at complete rest. The TDEE (Total Daily Energy Expenditure) Calculator builds on your BMR by adding calories burned through daily activity and exercise, giving a more complete picture for calorie planning.

Which calculators are useful for tracking a pregnancy?

NeftCal offers the Pregnancy Due Date Calculator, Ovulation Calculator, Conception Date Calculator, Pregnancy Weight Gain Calculator, and Baby Weight/Height Calculator to cover different stages of pregnancy planning and tracking.

Are these health calculators a substitute for medical advice?

No. These calculators provide general estimates based on established formulas for informational purposes only — they don't replace personalized guidance from a doctor, dietitian, or other qualified healthcare professional.

Are NeftCal's health calculators free and private?

Yes — all 27 health and fitness calculators are free with no signup required, and they calculate results directly in your browser without sending your personal health data to a server.

Health & Fitness Calculators

34 free calculators across body composition, nutrition, fitness & training, pregnancy & women's health, medical & clinical tools, and more. No signup. Just results.

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All 34 health and fitness calculators, in one place

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Body Composition

8 tools

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Nutrition

9 tools

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Fitness & Training

7 tools

🏋️‍♂️ One Rep Max (1RM) Calculator Estimate your one-rep max and training percentage chart Open Calculator → 🏃 Pace Calculator Calculate running pace, time or distance with splits Open Calculator → 🫁 VO2 Max Calculator Estimate cardiovascular fitness with the Cooper 12-min test Open Calculator → ❤️ Target Heart Rate Calculator Find your training heart rate zones using the Karvonen method Open Calculator → 👣 Steps to Calories Calculator Convert your daily step count into calories burned Open Calculator → 🔄 Body Recomposition Calculator Project your target weight and fat loss for a body fat goal Open Calculator → 🎂 Fitness Age Calculator See how your lifestyle compares to your chronological age Open Calculator →

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Pregnancy & Women's Health

4 tools

🤰 Pregnancy Due Date Calculator Estimate your due date, gestational age, and trimester timeline Open Calculator → 🌸 Ovulation Calculator Predict ovulation day, fertile window and next period Open Calculator → 📈 Pregnancy Weight Gain Calculator Track recommended weight gain by week against IOM guidelines Open Calculator → 📅 Conception Date Calculator Estimate your conception date from due date or last period Open Calculator →

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Other

3 tools

😴 Sleep Calculator Find the best bedtime or wake time based on sleep cycles Open Calculator → 👶 Baby Weight/Height Calculator Compare your baby's weight and height to age-matched averages Open Calculator → 👗 Body Type Calculator Find your body shape from bust, waist and hip measurements Open Calculator →

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Medical & Clinical Tools

3 tools

🩺 GFR Calculator Estimate kidney function (eGFR) and CKD stage from creatinine Open Calculator → 🧍 Body Surface Area Calculator Calculate BSA from height and weight using clinical formulas Open Calculator → 🍷 BAC Calculator Estimate blood alcohol content from drinks, weight and time Open Calculator →