Introduction
If you are asking, “How Big Is a 20l Microwave?”, you are probably trying to work out whether that capacity will fit your kitchen, your plates, and your everyday cooking needs. A 20 litre microwave sits in the compact-to-medium range. It is large enough for most reheating, defrosting, and simple cooking tasks, but it is not the largest size available. This guide explains the typical external dimensions, internal space, turntable size, countertop footprint, and practical fit of a 20l microwave so you can choose with confidence.
Table of Contents
- What Does 20 Litres Mean?
- Typical External Dimensions of a 20l Microwave
- Internal Cooking Space and Usable Capacity
- Turntable Size and Plate Fit
- How a 20l Microwave Compares to Other Sizes
- Is a 20l Microwave Big Enough for Everyday Cooking?
- Countertop Space and Kitchen Fit
- Built-in, Over-the-Range, and Compact Placement
- How to Measure Before You Buy
- Size vs Power and Features
- Tips and Best Practices
- Common Mistakes to Avoid
- Frequently Asked Questions
- Conclusion
What Does 20 Litres Mean?
The “20l” rating refers to the internal capacity of the microwave cavity, not the external size of the appliance. In simple terms, it means the usable cooking space inside the microwave is about 20 litres. Manufacturers calculate this from the internal width, height, and depth of the cavity. However, the practical usable space can feel slightly smaller because of the turntable, walls, door curve, and any internal shelf or accessory.
A 20 litre microwave is usually considered a compact family or single-person size. It is larger than very small 15 litre models and smaller than 23, 25, or 30 litre models. For many kitchens, it offers a useful balance between cooking space and countertop footprint.
Typical External Dimensions of a 20l Microwave
External dimensions vary by brand, design, door style, and control panel layout, but most 20l microwaves fall within a fairly predictable range. A typical model may be around 46 to 50 centimetres wide, 28 to 32 centimetres high, and 35 to 40 centimetres deep. Some compact models are slightly narrower, while models with larger handles or rear ventilation may be a little deeper.
When measuring your kitchen, always use the exact product dimensions rather than assuming a standard size. Even a difference of two or three centimetres can matter if the microwave must fit under a cabinet, beside a kettle, or inside a dedicated shelf. Also remember to include space for the door to open fully and for ventilation around the appliance.
Internal Cooking Space and Usable Capacity
The internal cavity of a 20l microwave is usually around 30 to 34 centimetres wide, 20 to 24 centimetres high, and 30 to 34 centimetres deep. These measurements give you a better idea of what will actually fit inside. A 20 litre capacity is enough for a standard dinner plate, a medium casserole dish, a jug of milk, or a bowl of soup, but it may feel tight for large roasting trays or wide rectangular dishes.
The shape of the cavity matters as much as the capacity. Some microwaves have a wider but shallower cavity, while others are deeper and more square. If you often cook with rectangular containers, check the internal width and depth rather than relying only on the litre rating.
Turntable Size and Plate Fit
The turntable is one of the most important size details because it determines which plates and bowls can rotate safely. Many 20l microwaves have a turntable diameter of about 24.5 to 27 centimetres. That is usually enough for a standard dinner plate, but it may not fit very large plates, pizza stones, or oversized serving dishes.
A turntable that is too small can cause uneven heating because food near the edges may not rotate properly. If your household uses large plates, look for a model with a turntable of at least 27 centimetres. If you use compact bowls or smaller plates, a 24.5 centimetre turntable may be perfectly adequate.
How a 20l Microwave Compares to Other Sizes
Comparing a 20l microwave with other common capacities helps put its size into context. Smaller models save space but may limit dish size, while larger models offer more flexibility but take up more room. (See Also:How Long To Put Buldak In Microwave)
| Capacity | Typical Use | Approximate External Width | Best For |
|---|---|---|---|
| 15l | Very compact | 40 to 44 cm | Small kitchens, single servings |
| 17l | Compact | 43 to 47 cm | Basic reheating and small plates |
| 20l | Compact to medium | 46 to 50 cm | Everyday reheating, small families |
| 23l | Medium | 48 to 52 cm | Larger plates and more flexible cooking |
| 25l | Medium to large | 50 to 54 cm | Families and batch cooking |
| 30l | Large | 52 to 58 cm | Big dishes, roasting, and frequent cooking |
As the table shows, a 20l microwave is a middle-ground option. It is not the smallest available, but it is still compact enough for many apartments, dorm rooms, offices, and smaller kitchens.
Is a 20l Microwave Big Enough for Everyday Cooking?
For many people, a 20l microwave is big enough for daily use. It handles reheating leftovers, warming drinks, defrosting frozen food, cooking ready meals, softening butter, and preparing simple microwave recipes. It is also suitable for steaming vegetables, heating soup, and melting chocolate when you use appropriately sized containers.
It may be less suitable if you regularly cook large family meals, roast whole chickens, bake large dishes, or use wide rectangular trays. In those cases, a 23l or 25l model may provide more comfortable space. The right size depends less on the litre number and more on the shape of the food and containers you use most often.
Countertop Space and Kitchen Fit
When people ask “How Big Is a 20l Microwave?”, they often mean the space it will occupy on the counter. A 20l model usually needs a clear area of about 50 centimetres wide, 40 centimetres deep, and 35 centimetres high. You should also allow extra space behind and above the unit for ventilation, which is often recommended by manufacturers.
Do not measure only the footprint. Check the door swing, the location of the power outlet, and whether the microwave will block nearby appliances. A microwave that fits physically may still feel awkward if the door opens into a wall, sink, or another appliance.
Built-in, Over-the-Range, and Compact Placement
Most 20l microwaves are countertop models, but placement options can vary. Some compact models are designed for shelves or small kitchen nooks, while others may be installed in a cabinet with proper ventilation. Over-the-range microwaves are usually larger and include extraction features, so a 20l countertop model is not normally the same type of appliance.
If you want a built-in look, check whether the manufacturer offers a trim kit or approved installation method. Never enclose a standard countertop microwave in a tight cabinet without ventilation, because heat can build up and affect performance or safety.
How to Measure Before You Buy
Measuring carefully is the best way to avoid buying a microwave that does not fit. Follow these steps:
- Measure the width of the intended space from left to right, including any side walls or cabinets.
- Measure the depth from the back wall to the front edge of the counter or shelf.
- Measure the height from the counter to the underside of the cabinet above.
- Add at least 5 to 10 centimetres of clearance for ventilation, depending on the manufacturer’s guidance.
- Measure your most-used plates, bowls, and containers to confirm they fit on the turntable.
- Check the door swing direction and make sure it opens without hitting a wall or appliance.
- Confirm the power cord can reach the outlet without stretching across a sink or hot surface.
These measurements take only a few minutes and can prevent an expensive mistake. If your space is tight, compare the exact external dimensions of several 20l models rather than choosing by capacity alone.
Size vs Power and Features
Capacity is only one part of microwave selection. A 20l microwave may come with different power levels, usually around 700 to 900 watts for standard models. Higher wattage generally heats food faster, but it does not change the physical size. Some compact microwaves include grill, convection, or inverter technology, which can add useful cooking functions without necessarily increasing capacity. (See Also:How To Dry Oregano Leaves In Microwave)
Controls, door handle design, and interior shape can also affect usability. A digital panel may take up space on the front, while a dial control may leave more room for the cavity. If you want maximum cooking space in a compact footprint, look for a model with a flatbed design, which removes the turntable and can make the cavity feel larger.
Tips and Best Practices
- Check the turntable diameter before buying, especially if you use large dinner plates.
- Measure your kitchen space with clearance included, not just the microwave footprint.
- Choose a model with enough internal height for tall mugs and bowls.
- Use microwave-safe containers that fit comfortably without touching the walls.
- Leave ventilation space at the back and sides as recommended by the manufacturer.
- Consider a flatbed microwave if you want more flexible internal space.
- Compare exact dimensions across brands because two 20l models can have different footprints.
Common Mistakes to Avoid
One common mistake is assuming that all 20l microwaves have the same external size. In reality, design details can make one model wider, taller, or deeper than another. Another mistake is buying based only on capacity without checking whether your favourite plates fit on the turntable.
Some buyers also forget to allow for door clearance and ventilation. A microwave that fits neatly on the counter may still be awkward to use if the door cannot open fully. Finally, avoid placing a standard countertop microwave in a fully enclosed cabinet unless the manufacturer specifically approves that installation.
Frequently Asked Questions
What are the typical dimensions of a 20l microwave?
A typical 20l microwave is around 46 to 50 centimetres wide, 28 to 32 centimetres high, and 35 to 40 centimetres deep externally. Internal dimensions are usually smaller and vary by model.
Will a 20l microwave fit a dinner plate?
Most 20l microwaves fit a standard dinner plate, especially if the turntable is 24.5 to 27 centimetres wide. Very large plates may not fit comfortably, so check the turntable diameter.
Is a 20l microwave good for a family?
It can suit a small family for reheating and simple cooking, but larger families may prefer 23l, 25l, or 30l models for bigger dishes and batch cooking. (See Also:How To Replace Over The Oven Microwave)
Does a flatbed 20l microwave feel bigger?
Yes. A flatbed design removes the turntable, which can make the cavity feel more spacious and allow rectangular containers to sit more evenly.
How much ventilation space does a 20l microwave need?
Ventilation needs vary by model, but many microwaves need several centimetres of space at the back, sides, and top. Always follow the manufacturer’s instructions.
Conclusion
So, how big is a 20l microwave? Externally, it is usually a compact appliance around 46 to 50 centimetres wide, while internally it offers about 20 litres of cooking capacity. That size works well for everyday reheating, defrosting, and simple meals, provided your plates and containers fit the turntable. By measuring your space, checking exact dimensions, and comparing turntable size, you can choose a 20l microwave that fits both your kitchen and your cooking habits.