Kids Pants Size Chart & Conversion: Boys, Girls & All Ages

Navigating the world of children’s clothing sizes can be daunting, and trying to decode a kids’ pants size chart is sometimes a guessing game. But it doesn’t have to be.

Pants must sit right, or they can quickly become too tight and restrictive or too loose and difficult to wear.

This article will guide you on effectively utilizing a kids’ pants size chart, ensuring your little ones always have the right fit. We’ll help take the guessing, trying, dressing room meltdowns, and returns out of the picture.

Baby Pants Size Chart (Boys and Girls)

Baby pants are measured in age, height, weight, and waist. Use our chart as a general guide.

Toddler Pants Size Chart (Boys and Girls)

When you move up to toddler sizes, measuring the hips and inseam is essential. Toddler pant sizes usually range from two to five years. Here’s our general guide:

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Months Vs. 2T 

Girls’ Pants Size Chart (Five to 13 Years)

When your girl reaches 5 years of age, brands move up to labels such as XS, S, M, L, and XL.

Boys’ Pants Size Chart (Five to 13 years)

For boys, you should always ensure there’s enough room in the crotch area. Restrictive clothing in that area can make your boy uncomfortable and lead to complications over time. So when you fit pants, add an inch if you feel it’s necessary.

How to Measure a Kid’s Pant Size

Children’s apparel sizes are usually specified according to age. However, if you want to find the perfect fit, using your child’s height, weight, hip, waist, and inseam measurements is much better.

Let your child wear skin-tight pants or only underwear — there should be as little padding as possible for an accurate reading. Using a cloth measuring tape, here’s what you do:

• Hips: Begin by measuring your child’s hips. Ensure you place the measuring tape around the fullest part.
• Waist: Measure the waist by going around the lower belly, near the belly button.
• Inseam: Measure from the center of the crotch, on the inside of the leg, down to the foot.
• Height: Let your child stand against a wall, with the feet aligned and back straight. Then measure their height from the top of the head to the floor.

Once you’ve got the measurements, match them with the clothing brand you’re buying.

Tips for Buying Pants/Bottoms

To prevent as many frustrations as possible, we’ve gathered some additional tips for buying pants/bottoms for the above age groups. Let’s start with babies:

Tips for Babies

When buying pants or bottoms for babies, there are a few considerations to keep in mind. Avoid buying in bulk for your newborn. Babies grow quickly within the first weeks and months, so they will probably change sizes quickly ⁽¹⁾.

• Buy larger: Babies can easily rock a size or two bigger pants. Your little one will likely soon enter a growth spurt, and the bottoms will fit just right.
• Ensure it’s simple: You must consider how easy the pants are to put on and off for diaper changes. Buttons and tiny zippers aren’t ideal when changing a wiggly baby.
• Go for soft and stretchy: Soft, stretchy materials are best for babies. This ensures optimal comfort as well as easy changing.
• Opt for elastics: Look for an elastic waistband, even on jeans. Non-elastics may appear cute, but they’re likely uncomfortable for your baby.

Tips for Toddlers

As a toddler, your little one suddenly becomes much more independent. Here are some tips:

• Easy to pull on and off: Opt for pants that are easy to pull on and off. This way, tots can do it themselves if they prefer.
• Consider the diaper: Not all toddlers have mastered the art of toilet training yet. If so, consider how much room the diaper takes up and ensure you can close the zipper with one on. My little one went down a pant size once the diaper was off.
• Opt for comfort: Sticking soft, stretchy materials is best.
• Involve your toddler: If you can, bring your toddler along with you when shopping. Pick out two or three pairs and let them choose. You might even get them into the fitting room to try them on.
• Look for sturdiness: Toddler pants need to be of durable material because of how active the wearers are.

Tips for Older Kids

Once your child is out of the toddler years, involving them in the process generally becomes easier. Here are some tips:

• Bring your child: If you can, bring your child with you to the shop. Perhaps let them pick out what they like and have them try it on in the fitting room. This way, you’ll be sure it’s the right fit.
• Buy one size up: Your child is likely to experience growth spurts until age 14 for girls and 16 for boys ⁽²⁾. Hence, we recommend buying one size up to avoid having to buy new pants too often. You can always buy a belt for them until the pants fit correctly.
• Bring a pair of pants: If you’re shopping alone, bring a pair of pants that fit your child. Then, use them as a guide for the new ones.
• Keep measurements with you: You can keep them on your phone or a small piece of paper in your wallet or purse. Make sure to update them as your child grows.
• Stick to the same brands: Sizes vary between brands. If you have a favorite brand, use it for as long as possible to make it easier for yourself.

International Conversion Chart

Various countries and continents use different measurements for clothing sizes. If you’re shopping online or even abroad, you will need a size conversion chart. We’ve made one for you below.

What Age Is Juniors Clothing For?

Junior clothing is essentially for preteen to teenage girls; there’s no boys’ division. The sizing is slightly different, but your daughter could easily upgrade to juniors when she’s in a U.S. kids’ size 14 or 16.

The sizes go like this:

Kids Pants Size FAQs

How Do Kids’ Sizes Work?

Kids’ sizes are usually determined by age, height, and weight. The size corresponds to the average measurements for age groups, but it’s always best to measure as kids grow at different rates.

How Do You Measure a Child For a School Uniform?

Measure their height, chest, waist, and hip sizes. For length, measure from the waist down for pants, and for tops, measure shoulder to waist. Always check the specific sizing guide for the uniform.

How Do You Convert to Kids’ Size?

Kids’ size conversions can vary by brand, but typically you’ll convert using age, height, and weight as a guide. Some brands also offer a conversion chart based on international sizing standards.