Choose a tool
Each page focuses on one practical task. Calculations run locally in your browser whenever possible.
Trimester Calculator
Find which trimester you are in by due date or last period, with the dates each trimester starts and ends.
DPO Calculator
Find how many days past ovulation you are today, your implantation window, and the earliest reliable day to test.
Due Date Calculator
Estimate your due date, current pregnancy week, days remaining, and key milestones from your last menstrual period.
Advanced Pregnancy Planner
Supports LMP, conception date, embryo transfer date, and known due date, with milestone calendar export.
Pregnancy Week Guide
View fetal development, prenatal checks, body changes, and weekly reminders.
Ovulation Calculator
Estimate ovulation date, fertile window, next period, and test reference date.
Period Predictor
Predict the next six period windows from your latest period and average cycle.
Cycle Risk Calculator
Estimate fertile days and relatively lower-risk days with a clear contraception disclaimer.
Kick Counter
Time, count, save, and copy fetal movement records locally.
Maternity Leave Planner
Calculate leave start, leave end, and return-to-work reference date.
Baby Zodiac Tool
Estimate baby star sign, Chinese zodiac, season, and days from today.