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Size chart

Pehr baby size chart

Pehr publishes 9 baby and toddler sizes, Newborn to 4T, by weight and height. A separate sleepwear chart is included. Checked against pehr.com on October 4, 2026.

Size chart

Measurement
Chart
Units
  1. Newbornup to 9 lb
  2. 0-3M9 to 14 lb
  3. 3-6M15 to 20 lb
  4. 6-12M20 to 25 lb
  5. 12-18M25 to 30 lb
  6. 18-24M26 to 32 lb
  7. 2Tnot published
  8. 3Tnot published
  9. 4Tnot published

Weight in lb, exactly as Pehr publishes it.

Does Pehr run small or large?

Runs large

Across 9 size labels that other brands also use, Pehr's published ranges cover bigger babies than the typical chart for the same label, by about a quarter to half a size. A given label should last a little longer.

Based on published size charts compared with other brands. This is not a fit review.

What a typical baby wears in Pehr

For a baby in the middle of the WHO growth chart, with room to grow. Your baby's own measurements give a closer answer in the calculator below.

AgeTypical weightTypical lengthPehr size
Birth7.3 lb19.5 inNewborn
3 months13.5 lb23.9 in3-6M
6 months16.8 lb26.2 in6-12M
9 months18.9 lb28 in6-12M
12 months20.5 lb29.5 in12-18M
18 months23.3 lb32.1 in18-24M
2 years26.1 lb34 in2T
3 years31.1 lb37.6 in3T

The chart as published

The original wording from Pehr's chart, size by size.

Clothing
SizeWeightHeight or lengthAge
NB (one size)up to 9 lbs17" to 21"Not published
0-3m9 to 14 lbs22" to 23"Not published
3-6m15 to 20 lbs23" to 26"Not published
6-12m20 to 25 lbs26" to 29"Not published
12-18m25 to 30 lbs29" to 32"Not published
18-24m26 to 32 lbs30" to 34"Not published
2TNot published34" to 37"Not published
3TNot published37" to 39"Not published
4TNot published40" to 43"Not published
Sleepwear
SizeWeightHeight or lengthAge
0-6m9 to 20 lbs22" to 25"Not published
6-12m20 to 25 lbs26" to 29"Not published
12-24m26 to 32 lbs30" to 34"Not published

Notes on this chart. Merges the brand's newborn, baby, and toddler tables. For 2T, 3T, and 4T the brand publishes height and waist only. The sleepwear chart is the brand's combined sizing table for sleep, swim, and knitwear, which uses combined size labels.

Sources

Retrieved October 4, 2026. Brands update their charts, so check the brand's page before a big purchase. This site is not affiliated with Pehr.

Calculator

What Pehr size on your date?

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Baby's latest measurements

For the growth chart

Only used to choose the growth curve. Not sure uses the average of both.

What is the occasion?

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Fit preference

When baby lands between two sizes, room to grow picks the larger one.

Start with a birth or due date

Sizes for each brand you pick will appear here, ready for the date you choose.

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