The interior dimensions of a microwave oven are measured inside the oven cavity in terms of width, height, and depth. Depending on the functions and brands, the interior volume and dimensions may vary.
External Dimensions
External dimensions refer to the measurements taken outside the microwave oven, including width, height, and depth. Similar to interior dimensions, external dimensions also vary depending on the functions, brand, and capacity of the oven.

Common Sizes of Popular Microwave Ovens Nowadays
Countertop Microwaves
Countertop microwaves are the most commonly used type. They typically come in compact sizes, making them convenient to place in kitchen spaces. Depending on household needs, these countertop microwaves also come in various capacities.
The capacity of countertop microwaves usually ranges from 20 to 30 liters, with corresponding common sizes:
- Interior Dimensions:
Length: 27.8 – 34 cm
Height: 17.5 – 21.1 cm
Depth: 25.5 – 32.4 cm
- External Dimensions:
Length: 43 – 52 cm
Height: 28.9 – 29.5 cm
Depth: 37.8 – 42.2 cm

Built-in Microwave Ovens
Built-in microwave ovens are designed to be installed into kitchen cabinets. The dimensions of this type vary depending on the brand, capacity, and usage needs.
The commonly used capacity for built-in microwaves nowadays ranges from 20 to 26 liters. Here are the interior and exterior dimensions of built-in microwaves:
- Interior Dimensions:
Length: 56 cm
Height: 38 cm
Depth: 33 – 38 cm
- External Dimensions:
Width: 59.5 cm
Height: 39 cm
Depth: 34 – 39.5 cm

Which Microwave Oven Fits Your Kitchen Space?
Countertop Microwaves
Countertop microwaves are the most popular choice for households due to their diverse designs and styles. You need to determine the placement of the microwave to ensure convenient usage and enhance the aesthetics of your kitchen space.
If your kitchen space is small, opt for a microwave with a capacity below 25 liters. For spacious kitchens, you can choose larger ones, starting from 25 liters and above.

Space-Saving Built-in Microwave
Built-in microwaves are designed with a built-in cabinet cavity, leaving only the front face for usage. This type of microwave helps save kitchen space and adds a more elegant, modern touch.
Similar to countertop microwaves, when choosing a built-in microwave, you also need to determine your usage needs and the space available to select a microwave with suitable dimensions.

Some Commonly Sized Microwave Models Today
Sharp Microwave Sizes
Sharp R-G222VN-S Microwave with Grill (20L)
The Sharp R-G222VN-S Microwave with Grill has a capacity of 20 liters, with dimensions of 44 x 25.8 x 34 cm. It is suitable for small families of 2 to 4 members. This microwave has a microwave power of 800W and a grill power of up to 1000W.
The Sharp R-G222VN-S Microwave with Grill features a modern design with simple control panel and easy operation. It offers various functions such as defrosting, reheating, cooking, allowing for quick food preparation.

Sharp R-370VN-S Microwave (23L)
The Sharp R-370VN-S Electronic Microwave has a capacity of 23 liters. The external dimensions of the product are 34 x 22 x 320 cm. It has a power of 900W and versatile functions such as cooking and reheating for quick meal preparation.
The compact design of the product helps save kitchen space and is suitable for families of 3 to 5 members. The Sharp R-370VN-S Microwave offers 11 power levels to easily meet all food needs in the family.

Electrolux Microwave Dimensions
Electrolux EMG20K38GWP Microwave (20L)
The Electrolux EMG20K38GWP Microwave has a capacity of 20 liters with a compact design. It is suitable for small families. With external dimensions of 45.1 x 33.9 x 25.8 cm and internal dimensions of 29.5 x 29.6 x 19.2 cm.
This microwave offers multiple functions to help you prepare a variety of meals efficiently. With a microwave power of 800W and grill power of 1000W, it cooks and grills food faster.

Electrolux EMG23D22B Convection Microwave Oven (23L) with Grill
The Electrolux EMG23D22B convection microwave oven has a capacity of 23 liters with 4 main functions: cooking, grilling, reheating, and defrosting. It features 5 power levels and a maximum power of up to 1280W.
With dimensions of 48 x 33.7 x 29.5 cm and weighing 12.6kg, this microwave oven offers ample space, allowing you to heat or cook multiple dishes simultaneously. Its standout feature is the perfect combination of heating and crisping modes, ensuring deliciously crispy results.

Bosch Microwave Oven Dimensions
Bosch BEL554MB0 Built-in Microwave Oven with Grill (20L)
The Bosch BEL554MB0 Built-in Microwave Oven with Grill is crafted from premium materials. This product offers easy installation and convenience in your kitchen space. With a capacity of 20 liters, the oven comes with the following dimensions:
- External dimensions: 38.2 x 59.5 x 38.8 cm
- Internal dimensions: 20.8 x 32.8 x 36.9 cm
- Microwave installation dimensions: 38-38.2 x 56-56.8 x 55 cm
The microwave features an easy-to-use control panel design. It offers 5 power levels ranging from 90W to 1200W depending on the function.

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Bosch BFL523MS0B Series 4 Built-in Microwave Oven (20L)
The Bosch BFL523MS0B Series 4 Built-in Microwave Oven has a capacity of 20 liters. External dimensions are 38.2 x 59.4 x 31.7 cm and internal dimensions are 36.2 x 56 x 30 cm. The product features 7 microwave programs, 4 defrost programs, and 3 cooking programs. Additionally, it offers 5 power levels for time-saving and efficient food preparation.

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