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Kids (Boy & Girl) Both Underwear Size Calculator & Chart

Kids (Boy & Girl) Both Underwear Size Calculator & Chart

Picking the perfect pair of undies for your little explorer might feel like solving a pint-sized puzzle. Fear not! In this whimsical guide, we’ll decode the enigma of kids’ underwear dimensions and equip you with clever measuring magic to ensure a snug, spot-on fit every time.

years
Age range: 2-16 years
inches
Measure around the narrowest part of waist
inches
Measure around the widest part of hips

Your Size Recommendation

Age Group:
Size Range:
Fit Type:

Alternative Sizes to Consider

💡 Sizing Tips

How to Measure

1

Waist Measurement

Measure around the narrowest part of your child’s waist, typically just above the hip bones

2

Hip Measurement (Optional)

Measure around the widest part of the hips for a more accurate fit assessment

Key Features:

👧 Girls’ Underwear Size Calculator

Find the perfect fit based on age and measurements

years
Age range: 2-16 years
inches
Measure around the narrowest part of waist
inches
Measure around the widest part of hips

Your Size Recommendation

Age Group:
Size Range:
Fit Type:
Style Recommendation:

💡 Sizing Tips

How to Measure

1

Waist Measurement

Measure around the narrowest part of your child’s waist, typically just above the hip bones

2

Hip Measurement (Optional)

Measure around the widest part of the hips for a more accurate fit assessment

Key Features for Girls:

👦 Boys’ Underwear Size Chart

Complete sizing guide for boys aged 2-16 years

Age
Size
Waist (inches)
Hip (inches)
Age Group
2 years
2T / XS
16 – 18
18 – 20
Toddler
3 years
3T / XS
17 – 19
19 – 21
Toddler
4 years
4T / XS
18 – 20
20 – 22
Toddler
5 years
XS / S
19 – 21
21 – 23
Little Kid
6 years
S
20 – 22
22 – 24
Little Kid
7 years
S / M
21 – 23
23 – 25
Little Kid
8 years
M
22 – 24
24 – 26
Little Kid
9 years
M / L
23 – 25
25 – 27
Big Kid
10 years
L
24 – 26
26 – 28
Big Kid
11 years
L / XL
25 – 27
27 – 29
Big Kid
12 years
XL
26 – 28
28 – 30
Big Kid
13 years
XL / XXL
27 – 30
29 – 32
Teen
14 years
XXL
28 – 32
30 – 34
Teen
15 years
XXL / XXXL
30 – 34
32 – 36
Teen
16 years
XXXL
32 – 36
34 – 38
Teen

📝 Boys’ Sizing Notes

  • Sizes may vary between brands – always check individual size charts
  • If between sizes, choose the larger size for comfort and growth
  • Measure waist at the narrowest point, typically above hip bones
  • Cotton materials may shrink slightly after washing
  • Active boys may prefer slightly looser fits for comfort

👧 Girls’ Underwear Size Chart

Complete sizing guide for girls aged 2-16 years

Age
Size
Waist (inches)
Hip (inches)
Age Group
2 years
2T / XS
16 – 17.5
18 – 19.5
Toddler
3 years
3T / XS
16.5 – 18
18.5 – 20
Toddler
4 years
4T / XS
17 – 18.5
19 – 20.5
Toddler
5 years
XS / S
17.5 – 19
19.5 – 21
Little Girl
6 years
S
18 – 19.5
20 – 21.5
Little Girl
7 years
S / M
18.5 – 20
20.5 – 22
Little Girl
8 years
M
19 – 20.5
21 – 22.5
Little Girl
9 years
M / L
19.5 – 21
21.5 – 23
Big Girl
10 years
L
20 – 21.5
22 – 23.5
Big Girl
11 years
L / XL
20.5 – 22
22.5 – 24
Big Girl
12 years
XL
21 – 22.5
23 – 24.5
Big Girl
13 years
XL / XXL
21.5 – 23.5
23.5 – 25.5
Teen
14 years
XXL
22 – 24.5
24 – 26.5
Teen
15 years
XXL / XXXL
23 – 26
25 – 28
Teen
16 years
XXXL
24 – 27
26 – 29
Teen

📝 Girls’ Sizing Notes

  • Girls’ sizing typically runs smaller than boys’ at equivalent ages
  • Hip measurements become more important for accurate fit from age 9+
  • Consider comfort and confidence equally when choosing sizes
  • Organic cotton options are gentle on sensitive skin
  • Style preferences may influence size choice for teens
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