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Baby tools that answer one question fast.
Everything here runs in your browser, costs nothing, and doesn't ask for an email. Built for the moments when you've got one hand free and a specific question.
Calculators
Wake Window Calculator
How long your baby can stay awake, and when the next nap is due.
Nap Schedule Builder
A full day's naps and bedtime, built from this morning's wake-up.
Diaper Size Calculator
Find the right size from your baby's weight, in lb or kg.
Baby Age Calculator
Age in weeks, months, and days — plus adjusted age for preemies.
Guides
Growth Spurt Calendar
When the common spurts land, and what they look like.
Baby Poop Chart
What each color means, and the three that need a call today.
Cluster Feeding Guide
Why they suddenly feed every 20 minutes, and how long it lasts.
Witching Hour Guide
Evening crying that resists soothing — when it peaks and ends.