๐ผ Pregnancy & Baby Calculators
Due date and pregnancy weeks, ovulation, your baby's age in days and months, the 100-day mark and first birthday.
015 tools
Pregnancy Due Date Calculator
Due date and weeks pregnant from your last period, conception date or known due date, with trimesters.
โOvulation Calculator
Estimated ovulation day, fertile window and next period for the next 3โ4 cycles from your cycle length.
โBaby Age Calculator
Baby's age in days, weeks and months, with 100th-day and birthday dates and corrected age for preemies.
โBaby Formula Calculator
How much formula per day and per bottle (oz and mL) by baby's weight and age, with a feeding chart.
โKorea Parental Leave Pay Calculator
Monthly South Korean parental leave benefit for 2026, including the 6+6 plan and single-parent caps.
โFrom pregnancy to the first birthday
Enter the first day of your last period for pregnancy weeks and the due date, your cycle length for ovulation and the fertile window, or your baby's birthday for age in days and months plus the 100-day and first-birthday dates.
Please note
Every child develops differently. These results are general information โ if you are worried about health or development, talk to your pediatrician first.