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How to Weigh Your Baby at Home

The tared scale method and subtraction method for weighing at home.

Written by Nickolas Mancini, MD, MBAReviewed October 1, 2026

Babies and toddlers can't safely stand on a scale alone. Use the tared scale method below for the most accurate weight — and the most accurate dose.

The tared scale method

Watch the animation below to see how to use the tared scale method. The whole process takes about 30 seconds.

Animation showing the tared scale method: step on the scale alone, press TARE so the display reads zero, then step back on holding your baby — the scale now shows only your baby's weight.

Tips for an accurate reading

  • Use a digital scale — they're more accurate than dial scales for small differences.
  • Place the scale on a hard, flat floor (not carpet) before weighing.
  • Weigh in the same clothing each time so changes reflect your child, not their outfit.
  • Recheck weight frequently for accurate dosing in small children. Older children: recheck every 1 to 3 months, because the right dose grows with them.
  • If your reading seems off, repeat the process to confirm before dosing.
Got the weight? Calculate the dose. Enter the weight in the CloseDose calculator for an exact, age-appropriate recommendation.
Disclaimer

Medication Safety & Usage

This tool does not provide medical advice. The dosing information is for educational purposes only and should be verified with a healthcare provider.

  • If your baby is gaining or losing weight unusually quickly, contact your pediatrician.
  • For the most accurate weight (especially for newborns or unwell infants) ask your pediatrician's office to weigh your child on their clinic scale.
  • Contact Poison Control (1-800-222-1222) if an overdose is suspected.
Read the full disclaimer →

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