Fitness & Health Calculators
Fitness and health calculators give quick estimates about your body. They help you track BMI, body fat, calorie needs, and pregnancy dates. All results are estimates, not medical advice.
Our Fitness & Health Calculators
BMI Calculator — Check your body mass index. For example, a 70 kg adult who is 1.75 m tall has a BMI of about 22.9.
Body Fat Calculator — Estimate your body fat percentage (adults only). For example, enter your waist, neck, and height measurements to get your estimated percentage.
Calorie Calculator — Find your daily calorie needs. For example, enter your age, weight, height, and activity level to see your estimated daily target.
TDEE Calculator — Find your total daily energy expenditure and maintenance calories, with cutting and bulking targets.
Pregnancy Calculator — Estimate your due date. For example, enter the first day of your last menstrual period. Your doctor’s ultrasound date takes precedence.
Age Calculator — works out your exact age in years, months, and days from your date of birth. Example: born 15 June 1990, age on 25 October 2026 is 36 years, 4 months, 10 days.
How to Choose
Pick the tool that matches your goal. Use the BMI Calculator for a quick weight check. Use the Body Fat Calculator for a deeper look at body composition (adults only). Use the Calorie Calculator to plan your daily intake. Use the Pregnancy Calculator to estimate a due date from your last period.
FAQs
Are these tools medical advice?
No. Results are estimates for information only. They are not medical advice. Talk to a doctor or other qualified professional for health guidance.
Is my health data stored?
No. All calculations run in your browser. We do not ask for your name or email, and we do not save your numbers.
Can children use the Body Fat Calculator?
No. The Body Fat Calculator is for adults only.
Which due date should I trust?
Your doctor’s ultrasound date takes precedence over the calculator’s estimate. Use the calculator as a starting point, then follow your doctor’s guidance.
Disclaimer: These tools give estimates only. They are not medical advice. All calculations happen in your browser. We do not store your data. Talk to a healthcare professional for medical advice.