Diapers & Formula in Japan (2026): Where to Buy & Brands

By the littletabi editors · June 30, 2026

AI-assisted guide, fact-checked against official and primary sources — not a sponsored stay. We don’t claim to have personally visited every place; we verify details, cite official sites, and flag anything you should confirm before you go. How we make these guides →

You can buy diapers and baby formula in Japan at major baby specialty stores like Akachan Honpo and Nishimatsuya, as well as at larger supermarkets, drugstores, and even convenience stores. Finding the right brand and size for your little one amidst the dazzling array of Japanese products is half the fun — or perhaps, a desperate, jet-lagged quest for essentials at 2 AM.

• Dedicated baby stores like Akachan Honpo and Nishimatsuya offer the widest selection of diapers, formula, and baby gear.
• Supermarkets (like Ito-Yokado, often housing Akachan Honpo 'Selections'), drugstores (e.g., Matsumoto Kiyoshi, Daikoku Drug), and even convenience stores (FamilyMart, Lawson, 7-Eleven) stock essential baby supplies.
• Japanese diaper sizes are generally based on weight, similar to Western brands, but always double-check the weight range on the packaging.
• Popular Japanese formula brands include Meiji, Morinaga, and Wakodo, though specific formulas may differ from your home country.
• Look for tax-free shopping options, especially at larger stores, to save money.

Where to Find Diapers and Baby Formula

Japan offers several reliable options for purchasing baby essentials. Knowing where to go will save you precious travel time and keep your little one comfortable.

Dedicated Baby Stores: Akachan Honpo and Nishimatsuya

For the most comprehensive selection, Akachan Honpo (アカチャンホンポ) and Nishimatsuya (西松屋) are your go-to destinations. These specialized chains are designed with parents in mind, offering everything from maternity wear to car seats and, of course, a vast range of diapers and formula.

• Akachan Honpo: This store is a treasure trove, stocking a wide variety of domestic diaper brands like Merries, Moony, and Goo.N, alongside various formula options. Akachan Honpo also carries unique items like the "Water 99% Super Head Refreshing Thick Sheet" dry shampoo for infants aged 0 months and up, released in June 2026. Many locations offer tax-free shopping for international visitors. Note that smaller "Akachan Honpo Selection" shops, found within larger Ito-Yokado supermarkets, typically carry a focused range of approximately 400 to 1,000 baby products.
• Nishimatsuya: Known for its competitive pricing, Nishimatsuya focuses heavily on baby and children's clothing (up to 160cm) but also carries a substantial range of baby goods. Their private brand, SmartAngel, offers high-quality products at accessible prices. Nishimatsuya often runs sales and promotions, which can be found via their in-store flyers or online.

Supermarkets, Drugstores, and Convenience Stores

While not as extensive as the specialty stores, these common retail outlets are excellent for quick purchases and topping up your supplies.

• Supermarkets: Larger supermarkets, such as those under the Ito-Yokado or Aeon chains, will carry a decent selection of diapers and formula, often including major Japanese brands. They're also great for stocking up on baby food, snacks, and other groceries.
• Drugstores (Drugstore or Yakkyoku): Chains like Matsumoto Kiyoshi, Daikoku Drug, and Sundrug are ubiquitous across Japan. They often have dedicated baby sections with diapers, wipes, formula, and baby healthcare items. Prices can be quite competitive, especially during promotional periods. Many offer tax-free shopping.
• Convenience Stores (Konbini): FamilyMart, Lawson, and 7-Eleven are everywhere, even in rural areas. While their selection is limited to smaller packs of diapers and a few standard formula options, they are lifesavers for late-night or emergency purchases. Don't expect a wide variety of brands or sizes here, but they reliably stock the most common necessities.

Japanese Diaper Brands and Sizes

Japanese diapers are highly regarded for their quality and softness. The main brands you'll encounter are Merries (Kao), Moony (Unicharm), and Goo.N (Daio Paper).

Japanese diaper sizes typically correspond to these weight ranges:

• Newborn (新生児): Up to 5 kg
• S (小さめ S): 4-8 kg
• M (Mサイズ): 6-11 kg
• L (Lサイズ): 9-14 kg
• Big (ビッグ): 12-22 kg

Always check the specific weight guidance on the package, as ranges can vary slightly by brand. If your child is between sizes, it's generally advisable to go up a size for comfort.

Baby Formula in Japan

Japanese baby formula brands include Meiji (明治), Morinaga (森永乳業), and Wakodo (和光堂). These are typically cow's milk-based and fortified with various vitamins and minerals. If your child requires a specific type of formula (e.g., hypoallergenic, soy-based, or a specialized brand from your home country), it is highly recommended to bring an adequate supply, as finding exact equivalents can be challenging.

When purchasing formula, be aware that preparation instructions will be in Japanese. Most formulas follow a standard preparation ratio, but having a translation app ready or noting down key Japanese terms like "hot water" (お湯 - oyu) and "ml" (ミリリットル - miririttoru) can be helpful.

Tips for Parents Traveling with Babies in Japan

• Pre-order Online: If you're staying in one location for a while, consider ordering from Akachan Honpo's or Nishimatsuya's online shops and having items delivered to your accommodation. Confirm with your hotel if they accept packages beforehand.
• Tax-Free Shopping: Many larger Akachan Honpo stores, drugstores, and department stores offer tax-free shopping for tourists on purchases over a certain amount (typically ¥5,000, as of 2026, confirm current regulations). Remember to bring your passport.
• Pack a Starter Supply: It's always wise to bring enough diapers and formula for the first few days of your trip, especially if you arrive late or are heading directly to a more remote area. This buys you time to locate a suitable store.
• Consider Alternatives for Gear: While you're planning for essentials like diapers and formula, remember you can rent a stroller, car seat, and other baby gear in Japan, saving you the hassle of lugging bulky items from home and ensuring you have suitable, safe equipment for Japanese transport.
• Allergies: If your child has allergies, exercise extreme caution with formula and baby food. Consult with your pediatrician before your trip, and always double-check ingredients. Japanese packaging will list allergens, but a translation app is essential if you cannot read Japanese.

FAQ

Are Japanese diaper sizes very different from Western ones?

Generally, Japanese diaper sizes are comparable to Western sizes and are primarily categorized by your baby's weight. However, slight variations exist between brands, so always check the specific weight range (in kilograms) printed on the package.

Can I find organic baby formula in Japan?

While standard cow's milk-based formulas like Meiji, Morinaga, and Wakodo are widely available, specific organic or specialized formulas might be harder to find. If your baby requires a particular type, bringing a supply from home is recommended.

What are the most popular Japanese diaper brands?

The most popular Japanese diaper brands are Merries, Moony, and Goo.N. They are known for their quality, softness, and absorbency, and are widely available across baby stores, drugstores, and supermarkets.

Do stores in Japan offer tax-free shopping for baby products?

Yes, many larger Akachan Honpo stores, drugstores, and department stores offer tax-free shopping for tourists. You'll generally need to make a purchase above ¥5,000 (as of 2026, confirm current regulations) and present your passport at checkout.

Is Japanese baby food readily available?

Yes, a wide variety of Japanese baby food (離乳食 - rinyushoku) is available in pouches, jars, and convenient snack forms at supermarkets, drugstores, and baby specialty stores. Options cater to different developmental stages.

What if my child has allergies to specific ingredients?

For allergies, it's crucial to be cautious. Japanese formula and baby food packaging will list ingredients, but if you cannot read Japanese, a translation app is indispensable. Bringing a safe supply of your child's specific formula or food is the safest approach.

Are online options available for buying baby supplies in Japan?

Yes, both Akachan Honpo and Nishimatsuya have online shops. You can order products for delivery to your accommodation, but it's essential to confirm with your hotel beforehand that they accept guest package deliveries.

What about baby wipes and other toiletries?

Baby wipes, lotions, shampoos, and other toiletries are widely available from Japanese brands at baby stores, drugstores, and supermarkets. Many are noted for being gentle and fragrance-free.

Preparing for baby essentials in Japan is straightforward with a little planning, to make your family trip as smooth and comfy as possible.