Quick, private calculators — everything runs in your browser, nothing is sent anywhere.
These five calculators cover some of the most common health questions people search for — your BMI category, how many calories you need in a day, when a pregnancy is due, your fertile window if you're trying to conceive, and how much water you should be drinking based on your activity level. Every calculation happens instantly in your own browser using standard formulas (like the Mifflin-St Jeor equation for calorie needs and Naegele's rule for due dates) — nothing you enter is stored, sent to a server, or saved anywhere, so you can use these as many times as you like with complete privacy.
These calculators give general estimates for healthy adults and are not a substitute for medical advice, especially during pregnancy or with existing health conditions.