Health
Everyday calculators for weight management and pregnancy planning, in US or metric units. Your inputs are not stored on our servers.
Managing your weight, step by step
Start with the BMI Calculator to see which WHO weight category you are in, then use the Ideal Weight Calculator to find a healthy target range for your height. Finally, the BMR & Calorie Calculator tells you roughly how many calories a day keep your weight steady, and how many to eat to lose or gain. All three accept feet, inches and pounds as well as centimeters and kilograms.
Planning and tracking a pregnancy
The Ovulation Calculator estimates your next three ovulation days and fertile windows from your last period and cycle length. Once you are pregnant, the Pregnancy Due Date Calculator gives your due date, how many weeks along you are, and the dates when common US prenatal tests, such as the anatomy scan and glucose screening, usually happen.
Read the results with care
These calculators use widely accepted formulas and population averages, cited on each page. They cannot account for muscle mass, illness, medication or irregular cycles. For decisions about your health, treatment, pregnancy or contraception, always talk to a doctor or other qualified professional.