Toddler Clothing Size Chart & Fit Guide (Ages 1–3)
Toddler sizing has only a loose relationship to age. A child wearing 18–24 month pajamas may already need 2T pants, while another comfortably wears 2T shorts and 3T tops. The size on the label is only a starting point.
Between ages one and three, children grow quickly, but not always evenly. Legs lengthen, torsos stretch, and body proportions change. Some toddlers still wear diapers while others have already started potty training. Healthy children of the same age can wear completely different sizes.
Garment construction also plays an important role. Infant sizes are designed around diaper bulk and baby proportions, while 2T and 3T are built for active toddlers who run, climb, jump, and play.
The guide below covers sizing from 12 months to 3T, measuring tips, international conversions, brand differences, and when it's time to size up.
True-to-Size Basics
Standard US sizing, 2 to 10 years, with free returns and exchanges if the fit is off.
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BUY 2 - 15% BUY 3 - 20% BUY 4 - 25%$40.002-3,3-4,4-5,6,7,8,9 yearsSELECT SIZE$40.002-3,3-4,4-5,6,7,8,9 yearsORGANIC COTTON BOYS' BOXER BRIEFS MULTI-PACK | 5 COLORSRegular price $40.00Regular priceUnit price per -
BUY 2 - 15% BUY 3 - 20% BUY 4 - 25%$40.002-3,3-4,4-5,6,7,8,9 yearsSELECT SIZE$40.002-3,3-4,4-5,6,7,8,9 yearsORGANIC COTTON GIRLS' BRIEFS MULTI-PACK | 5 COLORSRegular price $40.00Regular priceUnit price per -
$42.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsSELECT SIZE$42.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsORGANIC COTTON OAK PANT IN NAVALRegular price $42.00Regular priceUnit price per$42.00Sale price $42.00 -
$36.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsSELECT SIZE$36.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsORGANIC COTTON BIRCH SHORT IN SANDRegular price $36.00Regular priceUnit price per$36.00Sale price $36.00 -
$34.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsSELECT SIZE$34.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsORGANIC COTTON WILLOW TEE IN TASSELRegular price $34.00Regular priceUnit price per$34.00Sale price $34.00 -
$34.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsSELECT SIZE$34.002-3,3-4,4-5,5-6,6-7,7-8,8-9,9-10 yearsORGANIC COTTON OAK TEE IN NAVALRegular price $34.00Regular priceUnit price per$34.00Sale price $34.00
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