8-Month-Old Baby Weight & Length Chart
Eight months brings exciting motor leaps — many babies start pulling to stand this month. The Pincer grasp is developing, making self-feeding (and dropping everything) a new hobby.
Boy — 50th %ile
Girl — 50th %ile
⚖️ Weight by Percentile
| Percentile | 👦 Boy | 👧 Girl |
|---|---|---|
| 5th Percentile | 15 lbs 14 oz | 14 lbs 9 oz |
| 10th Percentile | 16 lbs 9 oz | 15 lbs 3 oz |
| 25th Percentile | 17 lbs 10 oz | 16 lbs 1 oz |
| 50th Percentile (median) | 18 lbs 15 oz | 17 lbs 7 oz |
| 75th Percentile | 20 lbs 5 oz | 18 lbs 12 oz |
| 90th Percentile | 21 lbs 6 oz | 19 lbs 10 oz |
| 95th Percentile | 22 lbs 4 oz | 20 lbs 5 oz |
📏 Length/Height by Percentile
| Percentile | 👦 Boy | 👧 Girl |
|---|---|---|
| 5th Percentile | 2' 2.8" | 2' 2.1" |
| 10th Percentile | 2' 3.1" | 2' 2.3" |
| 25th Percentile | 2' 3.4" | 2' 2.7" |
| 50th Percentile (median) | 2' 3.8" | 2' 3" |
| 75th Percentile | 2' 4.1" | 2' 3.4" |
| 90th Percentile | 2' 4.5" | 2' 3.8" |
| 95th Percentile | 2' 4.8" | 2' 4" |
📊 What Does My Baby's Percentile Mean?
A baby at the 50th percentile weighs more than 50% of babies the same age. The 25th–75th percentile range is considered average. Any percentile from the 5th to the 95th is medically normal — your baby's growth curve matters more than their rank. A consistently healthy 10th-percentile baby is thriving; a baby who drops from the 70th to the 30th percentile warrants a conversation with your pediatrician.
🌟 Developmental Milestones
- Pulls to standing position
- Pincer grasp emerging (thumb + forefinger)
- Waves bye-bye
- Says "dada" or "mama" (non-specifically)
Pulling to stand creates a new safety concern — make sure furniture is secured and there are no sharp edges at pulling height. Baby-proofing should be complete by now.
🍼 Feeding at 8 Month Old
Offer solids 2–3 times per day. Introduce soft finger foods to support pincer grasp development. Continue breast milk or formula (24–32 oz/day).
🚨 Talk to Your Pediatrician If…
- Not sitting independently
- Not trying to stand with support
- No back-and-forth babbling
- Doesn't look where you point
Frequently Asked Questions
How much should an 8-month-old weigh?
WHO median is 8.6 kg (19.0 lbs) for boys and 7.9 kg (17.4 lbs) for girls. Healthy range: roughly 7.2–10.1 kg (15.9–22.3 lbs).
When do babies start using a pincer grasp?
The pincer grasp (picking up small objects with thumb and forefinger) typically emerges between 8–10 months. Before that, babies rake food with their whole hand.
What finger foods are safe for 8 months?
Safe options include soft-cooked vegetables cut into small pieces, ripe banana, soft pieces of avocado, scrambled egg, and small pasta pieces. Avoid anything that doesn't dissolve easily.
My baby is standing but not walking — is that normal?
Absolutely. Most babies pull to stand at 8–10 months but don't take independent steps until 10–14 months (or later). There's a wide normal range.