Pregnancy & Baby

Estimate your pregnancy due date, current gestational age, and trimester milestones from the first day of your last menstrual period using Naegele's rule.

Calculate your exact age in years, months, weeks, days, hours, and minutes from your date of birth to any target date, plus days until your next birthday.

Compute the optimal bedtime or wake time based on 90-minute sleep cycles so you wake between cycles feeling refreshed — enter target wake or bed time.

Calculate the number of days, weeks, months, and years between two dates, including or excluding the end date — great for contracts, projects, and anniversaries.