Keto & Low-Carb in Japan: Complete Guide
Japan is a land of rice and noodles — but staying keto is absolutely possible. From yakitori to yakiniku, sashimi to convenience store hacks, this guide shows you how to maintain ketosis while enjoying Japanese cuisine.
Keto + Gluten-Free? You're in the right place
Many keto foods in Japan are naturally gluten-free. This guide highlights both keto and GF considerations. Items that contain gluten are marked separately so you can avoid them if needed.
The Keto Challenge in Japan
Rice is the default
Every Japanese set meal comes with rice. You'll need to actively request "gohan nashi" (no rice) at nearly every meal. Staff may be confused — rice is considered essential.
Hidden sugars everywhere
Japanese cooking uses sugar and mirin (sweet rice wine) liberally in sauces, glazes, and marinades. Teriyaki, tare, and most simmered dishes contain significant hidden carbs.
But keto options exist
Yakitori, sashimi, yakiniku, and izakaya culture make Japan surprisingly keto-friendly — if you know what to order and how to ask for it.
Keto-Safe Japanese Foods
Yakitori with salt (焼き鳥 塩)
Grilled chicken skewers with salt seasoning. Avoid tare (sauce) as it contains sugar and soy sauce. Ask for "shio" (塩) only.
Sashimi (刺身)
Raw fish slices — pure protein and healthy fats, zero carbs. Skip the soy sauce (contains sugar) or bring tamari.
Grilled fish (焼き魚)
Salt-grilled mackerel (saba), salmon, or sanma. Naturally zero-carb and packed with omega-3 fatty acids.
Yakiniku (焼肉)
Japanese BBQ — grill your own meat. Stick to salt-seasoned cuts and avoid sweet marinades and tare sauces.
Shabu-shabu (しゃぶしゃぶ)
Hot pot with thinly sliced beef/pork. Eat the meat and vegetables, skip the rice and noodles typically added at the end.
Edamame (枝豆)
Steamed soybeans — about 5g net carbs per serving. A solid keto-friendly appetizer at any izakaya.
Miso soup (味噌汁) — without potatoes
About 3g carbs per bowl. Avoid versions with potatoes (じゃがいも) or sweet corn. Tofu and wakame versions are best.
Tamagoyaki (卵焼き)
Japanese rolled omelet. Some versions contain a small amount of sugar and mirin — ask for plain if possible.
Foods to Avoid on Keto
White Rice (白米)
The foundation of Japanese cuisine. One bowl of rice contains 45-50g of carbs — enough to kick you out of ketosis immediately.
Ask "gohan nashi de onegaishimasu" (ご飯なしでお願いします) — "without rice, please." Most restaurants will comply.
Ramen, Udon & Soba Noodles
All noodles are extremely high in carbs (50-80g per serving). Ramen and udon are wheat-based (also not gluten-free). Even soba contains significant carbs.
Skip noodle shops entirely. If dining with friends at a ramen shop, some offer rice-less, noodle-less "soup only" options.
Tonkatsu & Panko-Breaded Foods
Deep-fried breaded pork cutlet. Panko breadcrumbs are wheat-based and add 20-30g carbs plus gluten. Includes korokke (croquettes) and ebi fry.
Choose grilled (yaki) over fried (age/furai) versions of any protein.
Teriyaki Sauce (照り焼き)
Made with soy sauce, mirin, and sugar. A typical teriyaki glaze adds 10-15g of sugar per serving.
Request salt (shio) seasoning instead. Most grilled items can be prepared with salt only.
Mirin-Heavy Dishes
Mirin is sweet rice wine with about 45% sugar content. Heavily used in simmered dishes (nimono), glazes, and sauces.
Stick to simply grilled or raw preparations. Avoid simmered dishes (煮物) as they almost always contain mirin.
Hidden Carbs: What to Watch For
Sushi Rice (酢飯)
Sushi rice is seasoned with sugar and rice vinegar. Even a small sushi meal contains 40-60g of carbs from the rice alone.
Order sashimi instead of sushi. Many sushi restaurants will serve "sashimi mori" (刺身盛り) — a platter of fish without rice.
Miso Paste (味噌)
Some miso varieties contain barley (mugi miso). While miso itself is relatively low-carb (2-3g per tablespoon), be aware of the gluten content in barley miso.
Choose rice miso (kome miso / 米味噌) which is both lower-carb and gluten-free.
Salad Dressings
Japanese salad dressings (especially sesame and wafu) often contain significant sugar and mirin. A seemingly healthy salad can hide 10-15g of carbs in the dressing.
Ask for olive oil and salt, or bring your own dressing packets. Request "dressing nashi" (ドレッシングなし) for no dressing.
Imitation Crab (カニカマ)
Surimi (imitation crab meat) found in many salads and sushi contains starch and sugar — about 6-8g carbs per serving.
Choose real crab or other plain seafood instead. Always check if "kani" is real crab or kamaboko (surimi).
Pickled Vegetables (漬物)
Many Japanese pickles are preserved with sugar. Fukujinzuke (curry accompaniment) and sweet pickled ginger can be surprisingly high in carbs.
Plain salt-pickled vegetables (shiozuke / 塩漬け) and umeboshi (pickled plum) are lower-carb options.
Convenience Store Keto Guide
Japan's convenience stores (konbini) are open 24/7 and surprisingly keto-friendly. Here are the best low-carb options available at 7-Eleven, Lawson, and FamilyMart.
Restaurant Tips for Keto in Japan
Izakaya is your best friend
Japanese pubs (izakaya) are the most keto-friendly restaurants in Japan. You order individual small plates, making it easy to choose grilled meats, sashimi, edamame, and salads while skipping rice and noodles.
Yakiniku = perfect keto meal
Japanese BBQ restaurants let you grill your own meat at the table. Order fatty cuts like karubi (short rib) and harami (skirt steak) with salt seasoning. Add vegetables and skip the rice.
Master the "no rice" phrase
"Gohan nashi de onegaishimasu" (ご飯なしでお願いします) is the most important phrase for keto in Japan. Most set meals come with rice — you need to actively opt out every time.
Convenience store breakfast strategy
Start your day with salad chicken, boiled eggs, and cheese from 7-Eleven. This zero-prep, high-protein, low-carb combo is available 24/7 at any convenience store in Japan.
Choose drinks wisely
Shochu (distilled spirit) and whisky are zero-carb. Dry sake has about 1-2g carbs per serving. Avoid beer (high carbs) and sweet cocktails. Highball (whisky + soda) is a safe default.
Carry a dietary card in Japanese
Show restaurant staff a card explaining "no rice, no noodles, no sugar in cooking please" (ご飯・麺類なし、調理に砂糖を使わないでください). This prevents misunderstandings.
Keto + Gluten-Free: The Overlap
Good news: Keto and gluten-free diets overlap significantly in Japan. Most keto-safe foods (sashimi, grilled meats, eggs) are also naturally gluten-free. The main additional concerns for keto+GF eaters are soy sauce (contains wheat) and some seasonings.
Safe for Both
- Sashimi (with tamari instead of soy sauce)
- Salt-grilled yakitori
- Yakiniku with salt seasoning
- Edamame
- Plain grilled fish
- Boiled eggs
- Salad chicken (konbini)
Keto-OK but NOT GF
- Soy sauce (contains wheat)
- Some miso (barley miso contains gluten)
- Yakitori tare sauce (soy sauce-based)
- Some processed meats (wheat fillers)
- Certain convenience store items with wheat additives
Essential Japanese Phrases for Keto
ご飯なしでお願いします
Gohan nashi de onegaishimasu
Without rice, please
砂糖は使わないでください
Satou wa tsukawanaide kudasai
Please don't use sugar
塩だけでお願いします
Shio dake de onegaishimasu
Salt only, please
たれなし、塩で
Tare nashi, shio de
No sauce, salt instead
麺なしにできますか？
Men nashi ni dekimasu ka?
Can you make it without noodles?
パンなしでお願いします
Pan nashi de onegaishimasu
Without bread, please
炭水化物を控えています
Tansuikabutsu wo hikaete imasu
I'm limiting carbohydrates
小麦アレルギーがあります
Komugi arerugii ga arimasu
I have a wheat allergy
Plan Your Japan Trip
Find Hotels with Kitchen Access
Stay in apartments or hotels with kitchenettes to prepare your own keto meals. Book on Booking.com for free cancellation.
Browse Tokyo hotels →Book Japanese Food Tours
Guided food tours through Tokyo's izakaya and sashimi spots — many options naturally align with keto eating.
Explore food tours →Links above are affiliate links. We may earn a commission at no extra cost to you.