EllyTools

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Age Calculator

Exact age in years, days…

Date Calculator

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Timezone Converter

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Pregnancy Due Date Calculator

Due date, current week & milestones

Wonder Weeks Calculator

Baby's 10 developmental leaps

BMI & Body Fat Calculator

BMI + body fat % — metric & imperial

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Daily calorie needs & weight goals

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Wonder Weeks Calculator

Track your baby's 10 developmental leaps from birth

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Enter your baby's due date to see all 10 developmental leaps

  • • Which leap your baby is currently in
  • • Exact dates for all 10 leaps
  • • Days until the next stormy period

Based on The Wonder Weeks by Frans Plooij & Hetty van de Rijt. Leap timing is calculated from the due date.