Pregnancy & Baby calculators

From conception date to baby percentile, the routine numbers every new parent needs. Pair these with our existing due-date, pregnancy week tracker and ovulation calculators.

10 calculators (+3 in Health)
Before baby arrives
📅Conception date
Estimate conception from LMP or expected due date.
🤰Pregnancy week
Current gestational week + trimester from LMP.
🕐Contraction timer
Tap start/stop; tracks duration, gap, 5-1-1 rule.
💸First-year cost
Diapers, formula, gear, healthcare, childcare.
After baby arrives
🍼Baby formula amount
Daily ml by weight + per-feed split (8/6/4 feeds).
🤱Breast milk intake
Daily mL for a breastfed baby by weight.
👶Baby age in months
Exact months + days from birth date to today.
📊Baby weight percentile
WHO percentile band for boys / girls 0–24 months.
🚶Walking age
Milestone-based estimate of when baby will walk.
👕Clothing size
US / EU / UK / India size by age and height.
Already in Health & fitness
🗓️Pregnancy due date
EDD from LMP using Naegele’s rule.
📆Pregnancy week tracker
Week-by-week milestones and baby size.
🌸Ovulation
Fertile-window dates from cycle length.