Diaper Size Guide
Complete guide to baby diaper sizing for all ages and brands. Find the perfect fit by weight and age, prevent leaks, and get expert tips for newborns to toddlers.
πΆ Find Your Baby's Diaper Size
Universal Diaper Size Chart
| Size | Weight Range | Age Range | Daily Usage | Duration |
|---|---|---|---|---|
| Preemie | Under 6 lbs (2.7 kg) | Premature babies | 8-12 diapers | 2-4 weeks |
| Newborn | 6-10 lbs (2.7-4.5 kg) | 0-2 months | 8-12 diapers | 4-6 weeks |
| Size 1 | 8-14 lbs (3.6-6.4 kg) | 1-4 months | 8-10 diapers | 2-3 months |
| Size 2 | 12-18 lbs (5.4-8.2 kg) | 3-6 months | 6-8 diapers | 3-4 months |
| Size 3 | 16-28 lbs (7.3-12.7 kg) | 6-18 months | 5-7 diapers | 6-8 months |
| Size 4 | 22-37 lbs (10-16.8 kg) | 18-36 months | 5-6 diapers | 8-12 months |
| Size 5 | 27+ lbs (12.2+ kg) | 2+ years | 4-6 diapers | Until potty training |
| Size 6 | 35+ lbs (15.9+ kg) | 3+ years | 4-5 diapers | Until potty training |
| Size 7 | 41+ lbs (18.6+ kg) | 4+ years | 3-4 diapers | Until potty training |
Popular Brand Comparison
Pampers
- Preemie to Size 7 available
- Best for smaller/slimmer babies
- Wetness indicator on most sizes
- Umbilical cord notch (newborn)
- Multiple product lines (Swaddlers, Cruisers, Baby Dry)
Huggies
- Preemie to Size 6 available
- Better for chunkier babies
- DoubleGrip Strips
- Pocketed waistband
- Little Snugglers, Little Movers lines
Honest
- Newborn to Size 6
- Plant-based materials
- Hypoallergenic
- Fun, colorful designs
- Eco-friendly packaging
Luvs
- Newborn to Size 6
- Budget-friendly option
- Single product line
- 12-hour protection
- Stretch tabs
Cloth Diaper Sizing Guide
Cloth diapers offer an eco-friendly alternative with different sizing approaches than disposables.
One-Size Fits All
Adjustable from 8-35 lbs
Birth to potty training
Most economical option
Birth to potty training
Most economical option
Sized System
Small, Medium, Large
Better fit at each stage
Less bulk on newborns
Better fit at each stage
Less bulk on newborns
Newborn Specific
6-12 lbs typically
Trim fit for tiny babies
Umbilical cord snap-down
Trim fit for tiny babies
Umbilical cord snap-down
Cloth Diaper Size Chart
Newborn: 6-12 lbs
Small: 8-18 lbs
Medium: 15-25 lbs
Large: 22-35 lbs
One-Size: 8-35 lbs
Perfect Diaper Fit Checklist
Waist Fit: Should sit just below belly button. You should be able to fit two fingers between diaper and baby's tummy.
Leg Openings: Snug but not tight. No red marks on baby's skin after removal.
Back Coverage: Diaper should cover baby's entire bottom and come up their back.
Tab Position: Tabs should fasten straight across, not angled up or down.
Wetness Indicator: If visible, this often means it's time to size up.
Movement Test: Baby should be able to move legs freely without restriction.
Signs to Size Up
- Frequent leaks or blowouts
- Red marks on baby's skin
- Difficulty fastening tabs
- Diaper doesn't cover baby's bottom
- Wetness indicator shows consistently
- Baby seems uncomfortable
Quick Size Recommendations
Newborn Baby
6-10 lbs β’ 0-2 months
Growing Infant
12-18 lbs β’ 3-6 months
Mobile Baby
16-28 lbs β’ 6-18 months
Active Toddler
22-37 lbs β’ 18+ months
Preschooler
35+ lbs β’ 3+ years
Overnight Diapers
Size up for 12-hour protection
Planning Family Travel with Baby?
Find baby-friendly accommodations, family packages, and child-safe destinations worldwide
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