Diaper size guide 🇺🇸 United States
Find the right size by your baby's weight
| Size | Weight | |
|---|---|---|
| Size 1 | 8–14 lbs (3.6–6.4 kg) | Compare prices → |
| Size 2 | 12–18 lbs (5.4–8.2 kg) | Compare prices → |
| Size 3 | 16–28 lbs (7.3–12.7 kg) | Compare prices → |
| Size 4 | 22–37 lbs (10–16.8 kg) | Compare prices → |
| Size 5 | 27+ lbs (12.2+ kg) | Compare prices → |
| Size 6 | 35+ lbs (15.9+ kg) | Compare prices → |
How to choose the right size
- • Always go by weight, not age — babies grow at different rates
- • If your baby is between sizes, go up — too tight causes leaks
- • Red marks on the thighs or waist mean the diaper is too small
- • Frequent blowouts usually mean it's time for the next size up