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Unfurnished flats in Japan often come without kitchen appliances, so a microwave is one of the first things newcomers buy. The catches: two electrical frequencies, outlet limits, heating times in watts and Japanese buttons. To bake cookies or roast a chicken for the holidays, you need a combination microwave oven (oven renji).
We compare six models sold on Amazon Japan, from ¥14,955 to ¥63,448, by Iris Ohyama, Panasonic, Sharp, Zojirushi and Toshiba. Specs are from the makers’ spec pages and manuals; prices from kakaku.com on 11 October 2026. Still flat-hunting? See our guide to renting in Japan.
📌 What you will learn
You do not have to read it all — jump to what you need.
- How to choose: 50/60 Hz, the outlet, watts, oven heat, wall gaps
- The 6 best picks, from ¥14,955
- Comparison table
- Using it: Japanese buttons, safety rules, when to buy
- Frequently asked questions
- The short version
※ Start wherever fits your situation.
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How to choose a microwave in Japan
1. Microwave only, or a microwave oven?
A simple microwave (tankinou renji) only reheats and defrosts. A combination microwave oven (oven renji) adds heaters to bake, roast and grill. Three of our ovens reach 250 °C or 300 °C, but only for about five minutes before dropping automatically. If you only reheat bento and leftovers, a ¥15,000 to ¥24,000 microwave is enough.
2. Hertz-free: 50 Hz in the east, 60 Hz in the west
Japan’s grid runs at 50 Hz in the east and 60 Hz in the west, split near the Fuji River and Itoigawa (Hitachi Energy). Sharp warns that some microwaves need parts replaced or adjusted to work in the other region, and says inverter circuits have made many newer models “hertz-free”. Look for “50/60Hz” or “50Hz・60Hz共用” in the specs, not “50Hz専用” or “60Hz専用”. All six picks are listed as hertz-free (the Toshiba on kakaku.com), useful if you move between Tokyo and Osaka; see our guide to moving within Japan.
3. One appliance per 15 A outlet
Our picks are rated at up to 1,460 W. Zojirushi’s manual says to plug the oven alone into a 15 A (or higher) AC 100 V outlet, warning that sharing a branched outlet with other appliances can overheat it and cause a fire. Do not share a power strip with a kettle or toaster; if the breaker trips often, ask your landlord about the circuit.
4. Watts: match the numbers on the food pack
Japanese convenience-store meals and frozen foods print heating times for set wattages such as 500 W or 600 W. Every pick offers manual 500 W and 600 W. The “1,000 W” in the specs is a short burst of 1.5 to 5 minutes, and Iris Ohyama’s 900 W mode lasts 3 minutes.
5. Flat floor, capacity and size
All six have a flat floor rather than a turntable, which Panasonic notes is easier to wipe clean. Capacity runs from 15 L to 30 L, but check the interior height too: Panasonic’s NE-FS2E is only 135 mm tall inside. Measure your rack before ordering; the Toshiba weighs about 22 kg.
6. Wall gaps, the rule people skip
Makers’ clearances differ: Panasonic’s NE-FL1E needs one side fully open, 3 cm on the other side and behind, and 10 cm above, while Sharp’s RE-WF276 can touch the wall at the sides and back with 10 cm above. Zojirushi and Toshiba add: leave more near heat-sensitive walls or outlets, and at least 20 cm from glass behind.
The 6 best microwaves and microwave ovens to buy in Japan in 2026
Prices include tax. Buttons go to Amazon Japan only: these are 100 V appliances made for Japan.
1. Iris Ohyama IMB-FD2204 — best budget microwave
For reheating only, Iris Ohyama’s IMB-FD2204 costs ¥14,955 at Amazon Japan (the black version’s lowest shop was ¥14,803). It is a 22 L microwave with a flat floor and dial controls, released on 12 February 2026.
Its “時短” (time-saving) button suits food packs: enter the wattage and time printed on the pack, press it, and the oven raises the power and shortens the time, by up to 44% at 500 W in Iris Ohyama’s own comparison.
| Type / capacity | Simple microwave, about 22 L, flat floor |
|---|---|
| Output | 900 W (short burst, 3 min), 600 W, 500 W, 200 W |
| Power | AC 100 V, 50/60 Hz; 1,400 W |
| Size / weight | About W 495 × D 365 × H 302 mm (D 403 mm with handle); 9.6 kg |
✅ Pros
- About ¥15,000
- Time-saving button for pack instructions
- Hertz-free, dial controls
⚠️ Cons
- No oven or grill
- 900 W only for 3 minutes
- Clearances not in the release
👍 Best for
- Students and one-room flats
- Anyone who only reheats and defrosts
2. Panasonic NE-FL1E — best simple microwave
Panasonic’s NE-FL1E (released on 1 September 2026, per kakaku.com) is a 22 L microwave with a flat interior 33.2 cm wide, a side-opening door, a backlit display and a steam sensor for automatic reheating.
Start at 500 W or 600 W and press the speed button: it switches to up to 1,000 W and, in Panasonic’s test, cut a 500 W, 2 min 20 s bento to 1 min 26 s. Amazon Japan charged ¥24,000; the lowest shop was ¥23,760.
| Type / capacity | Simple microwave, 22 L, flat floor, side-opening door |
|---|---|
| Output | Auto up to 1,000 W (max 1 min 30 s, then 600 W); manual 600, 500, 150 W |
| Power | 100 V, 50/60 Hz; 1,400 W |
| Size / weight | W 488 × D 380 × H 298 mm (D 405 mm with handle); 8.9 kg |
✅ Pros
- Speed button for pack instructions
- Wide flat interior
- Steam sensor for auto reheating
⚠️ Cons
- No oven or grill
- One side must stay open
- 1,000 W only in short bursts
👍 Best for
- Bento and leftover reheating
- Flats where a toaster handles the baking
3. Sharp RE-WF276 — best value microwave oven
Sharp’s RE-WF276 is the cheapest way here to bake and roast: a 27 L steam oven range with a 110–250 °C oven, a grill and a steam cup, for ¥29,800 at Amazon Japan (lowest shop ¥26,480 for the white model). Above 210 °C it runs for about five minutes, then switches to 200 °C.
Sharp says the sides and back can touch the wall, with 10 cm free above. It is a 2025 model; Sharp also lists the newer RE-WF277, about ¥47,600 at the lowest shop, with no Amazon Japan offer on kakaku.com.
| Type / capacity | Steam oven range, 27 L, one oven level, flat floor |
|---|---|
| Oven | 110–250 °C (above 210 °C for about 5 min, then 200 °C); proofing 35, 40, 45 °C |
| Microwave | 1,000 W (max 3 min), 600, 500, 200 W |
| Power | AC 100 V, 50/60 Hz; 1,400 W (microwave), 1,320 W (oven) |
| Size / weight | W 465 × D 385 × H 390 mm; about 13 kg |
✅ Pros
- Oven, grill and steam for about ¥30,000
- Sides and back can touch the wall
- 100 auto menus
⚠️ Cons
- One oven level
- 250 °C only for about 5 minutes
- Older model; RE-WF277 is newer
👍 Best for
- Narrow kitchens with no side space
- Occasional baking and roasting
4. Panasonic NE-FS2E — compact oven for low shelves
Panasonic’s NE-FS2E is a 15 L oven range only 302 mm tall, for spots under low shelves. Its back can touch the wall (2 cm at the sides, 10 cm above), and its single-level oven runs from 100 °C to 200 °C, holding 200 °C for up to 60 minutes.
The trade-off is space: the interior is 135 mm tall and the tray 364 × 279 mm, enough for cookies or a gratin; check the height before roasting anything tall. Amazon Japan listed it at ¥32,500; the lowest shop charged ¥29,479.
| Type / capacity | Oven range, 15 L, one oven level, flat floor |
|---|---|
| Oven | 100–200 °C (200 °C up to 60 min); grill; proofing 40 °C |
| Microwave | Auto up to 1,000 W (about 3 min, then 600 W); manual 1,000, 600, 500, 200, 100 W |
| Power | 100 V, 50/60 Hz; 1,300 W (microwave), 1,370 W (oven) |
| Size / weight | W 464 × D 359 × H 302 mm; 11.5 kg |
✅ Pros
- Low 302 mm height
- Back can touch the wall
- Holds 200 °C for up to an hour
⚠️ Cons
- Only 15 L, 135 mm tall inside
- Oven tops out at 200 °C
- Costs more than the Sharp
👍 Best for
- 1R and 1K kitchens with a low shelf
- Cookies, toast and small bakes
5. Zojirushi EVERINO ES-GY26 — family-size all-rounder
Zojirushi’s EVERINO ES-GY26 is a 26 L oven range with a 100–250 °C oven, an infrared sensor and a “レジグリ” mode that switches automatically between microwave and grill. Its “うきレジ” mode lifts food off the floor in the included 2.4 L heat-resistant glass bowl so that, Zojirushi says, it heats from all directions.
It comes with a 400 × 304 mm ceramic tray, its back can touch the wall (2 cm at the sides, 10 cm above), and kakaku.com lists its release as 1 August 2026. Amazon Japan charged ¥45,531 for the white model; the lowest shop was ¥43,800.
| Type / capacity | Oven range, 26 L, one oven level, flat floor |
|---|---|
| Oven | 100–250 °C (220–250 °C about 5 min, then 210 °C); proofing 30–45 °C |
| Microwave | Auto up to 1,000 W (about 3 min, then 600 W); manual 1,000 (max 3 min), 600, 500, 300, 150 W |
| Power | AC 100 V, 50/60 Hz; 1,420 W (microwave), 1,295 W (oven) |
| Size / weight | Interior W 378 × D 309 × H 201 mm; about 17.5 kg |
✅ Pros
- Automatic microwave-to-grill switching
- Glass bowl and ceramic tray included
- Back can touch the wall
⚠️ Cons
- One oven level
- About ¥45,000
- Heavier than the simple models
👍 Best for
- Couples and families
- Weeknight grilling and reheating
6. Toshiba ER-D3000C — best for holiday baking and roasts
For Thanksgiving pies, Christmas cookies or a roast, Toshiba’s Ishigama Dome ER-D3000C is the real oven here: 30 L with hot-air convection on two levels, 100–250 °C plus a 300 °C setting that runs for about five minutes before dropping to 230 °C. It also cooks with superheated steam and has 122 auto menus.
Toshiba calls its 39.9 cm depth (44.6 cm with the handle) the shallowest of any 30 L-plus home oven range in Japan, as of 1 March 2026. Released in July 2026, it cost ¥63,448 at Amazon Japan (white); the lowest shop charged ¥57,198.
| Type / capacity | Superheated-steam oven range, 30 L, two oven levels (convection) |
|---|---|
| Oven | 100–250 °C, 300 °C (about 5 min); settings of 240 °C+ switch to 230 °C; two 41.2 × 29.1 cm trays |
| Microwave | 1,000 W (max 5 min, then 600 W); 600, 500, 200, 100 W |
| Power | 1,430 W (microwave), 1,460 W (oven) |
| Size / weight | W 498 × D 399 × H 399 mm; about 22 kg; 9 cm above |
✅ Pros
- Two-level convection baking
- 300 °C setting and superheated steam
- Shallow body for a 30 L oven
⚠️ Cons
- About ¥60,000
- About 22 kg
- 300 °C only for about 5 minutes
👍 Best for
- Holiday baking and roasting
- Bakers who want two trays at once
Comparison table
| Model | Best for | Type | Capacity | Oven max | Wall gaps (maker) | Price, 11 Oct 2026* |
|---|---|---|---|---|---|---|
| Iris Ohyama IMB-FD2204 | Budget pick | Microwave | 22 L | — | See manual | ¥14,955 (Amazon) |
| Panasonic NE-FL1E | Simple reheating | Microwave | 22 L | — | 1 side open; 3 cm; 10 cm above | ¥24,000 (Amazon); lowest ¥23,760 |
| Sharp RE-WF276 | Value oven | Steam oven range | 27 L | 250 °C (about 5 min) | Sides and back 0; 10 cm above | ¥29,800 (Amazon); lowest ¥26,480 |
| Panasonic NE-FS2E | Low shelves | Oven range | 15 L | 200 °C | Back 0; 2 cm sides; 10 cm above | ¥32,500 (Amazon); lowest ¥29,479 |
| Zojirushi ES-GY26 | Family all-rounder | Oven range | 26 L | 250 °C (about 5 min) | Back 0; 2 cm sides; 10 cm above | ¥45,531 (Amazon); lowest ¥43,800 |
| Toshiba ER-D3000C | Holiday baking | Steam oven range, 2 levels | 30 L | 300 °C (about 5 min) | 9 cm above; rest in diagram | ¥63,448 (Amazon); lowest ¥57,198 |
* Amazon.co.jp offer on kakaku.com, incl. tax; “lowest” = lowest shop on kakaku.com; white model where colours differ. Wall gaps are the makers’ minimums.
Using a Japanese microwave: buttons, safety and timing
The Japanese buttons you will see
Labels vary, but these words cover most panels: あたため (atatame, reheat), 解凍 (kaitou, defrost), レンジ (renji, microwave power), オーブン (oobun, oven), グリル (guriru, grill), スチーム (suchiimu, steam), 予熱 (yonetsu, preheat), 自動 (jidou, auto), 手動 (shudou, manual), 取消 or とりけし (torikeshi, cancel), and スタート (start). For auto menus, point a translation app at the manual’s menu list.
Safety rules from the manual
Zojirushi’s ES-GY manual lists rules worth following with any microwave (your own manual comes first): do not heat fried eggs, raw eggs unless beaten first, or boiled eggs, shelled or not and including those in oden, because they can burst; do not overheat drinks, which can suddenly boil and spatter when you take them out; never run the microwave empty; and keep metal containers, aluminium foil, foil bento cups, retort pouches and cans out of microwave mode. It also warns against heating cloths, microwave hot-water bottles or kairo warmers. With the heaters on, ventilate and move pet birds to another room.
When to buy
Amazon.co.jp’s Prime Kanshasai (プライム感謝祭) has a pre-sale on 13–15 October and the main sale on 16–19 October 2026 for Prime members; its point-up campaign needs an entry. We do not know which microwaves will be discounted, so compare sale prices with ours (see our sale calendar).
Frequently asked questions
Can I use a microwave from Tokyo in Osaka?
Yes, if it is hertz-free. Japan uses 50 Hz in the east and 60 Hz in the west, and Sharp says microwaves made for one frequency may need parts replaced or adjusted to work in the other. Look for “50/60Hz” in the manual’s specifications; all six picks here are listed as hertz-free (the Toshiba on kakaku.com).
Do I need a microwave oven or is a simple microwave enough?
A simple microwave is enough if you only reheat and defrost: the Iris Ohyama IMB-FD2204 costs ¥14,955 and the Panasonic NE-FL1E ¥24,000. To bake or roast, pick a combination oven such as the Sharp RE-WF276 (¥29,800) or, for two trays, the Toshiba ER-D3000C.
Can I bake a whole chicken or a turkey?
Compare the bird with the interior height in the maker specs: Zojirushi lists 201 mm for the ES-GY26, while Panasonic’s NE-FS2E is only 135 mm tall inside. A large turkey may need to be cut into parts.
Why can I not run 1,000 W for long?
The makers rate 1,000 W as a short high-output burst: up to 1 minute 30 seconds on Panasonic’s NE-FL1E, about 3 minutes on the Sharp, Zojirushi and NE-FS2E, and 5 minutes on the Toshiba. Panasonic, Zojirushi and Toshiba then switch to 600 W automatically.
The short version
To reheat, buy Panasonic’s NE-FL1E, or Iris Ohyama’s IMB-FD2204 on a budget. To bake cheaply, Sharp’s RE-WF276; for a low shelf, Panasonic’s NE-FS2E; for a family, Zojirushi’s ES-GY26; for two-tray holiday baking, Toshiba’s ER-D3000C. Check for 50/60 Hz, give it its own outlet and leave the maker’s wall gaps.
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