Tools
Free Parenting & Pregnancy Tools and Calculators
Free, evidence-based parenting tools: baby sleep calculator, pregnancy due date calculator, and a solid foods readiness checker. Instant, no sign-up needed.
Sleep
Baby Sleep Calculator
See recommended total sleep, naps, and wake windows by age.
Pregnancy
Due Date Calculator
Estimate your due date, current week, and trimester.
Nutrition
Solid Foods Readiness Checker
Check whether your baby is ready to start solids.
Pregnancy
Ovulation Calculator
Estimate your most likely ovulation day and fertile window.
Baby
Baby Growth Percentile Calculator
Calculate weight, length, or head circumference percentile per WHO standards.
Nutrition
Formula & Milk Intake Calculator
See the recommended daily milk amount by baby's age and weight.
Baby
Diaper Size Calculator
See typical diaper size and estimated monthly usage by weight.
Sleep
Nap Transition Calculator
See typical nap count by age and the next transition window.
Sleep
Wake Window Calculator
Calculate wake window by age and estimated next sleep time.
Baby
Teething Timeline Calculator
See interactively which teeth have come in or are next, by baby's age.
Baby
Well-Child Checkup Calculator
See typical checkup age windows based on date of birth.
Screen-Free
Screen Time Calculator
See recommended daily screen time guidance by child's age.
Pregnancy
Pregnancy Weight Gain Calculator
Calculate recommended total weight gain range by your BMI.
Beyond Calculators: Personalized Tracking with Whispie
Whispie learns your baby's unique patterns to give personalized predictions — not just averages.