Teenager's Room Bed Sizes: 90x190 or 100x200?
Short answer: The standard bed size for a teenager's room is 90 × 190 cm. For teens taller than 175 cm choose 90 × 200 cm, for a wider sleeping space 100 × 200 cm, and if the room is larger than 11 m² a 120 × 200 cm (small double). The outer size of the bed frame is bigger than these figures: with the headboard and side rails, a 90 × 190 cm bed takes up roughly 100 × 200 cm in the room. The depth of a teenager's wardrobe does not depend on age; it is always 55-60 cm.
Teenager's room bed size chart
The table below gives two columns together: the size of the bed itself and the real floor space that bed occupies in the room once the frame is included. Use the second column when planning the room.
| Bed size | Name | Space taken with frame | Room needed |
|---|---|---|---|
| 90 × 190 cm | Single | ~100 × 200 cm | 8 m² and above |
| 90 × 200 cm | Long single | ~100 × 210 cm | 9 m² and above |
| 100 × 200 cm | Wide single | ~110 × 210 cm | 10 m² and above |
| 120 × 200 cm | Small double | ~130 × 210 cm | 11-12 m² and above |
| 140 × 200 cm | Narrow double | ~150 × 210 cm | 13 m² and above |
↔ Scroll the table sideways to see all of it.
The room column assumes that a wardrobe and a desk also fit in the room. If only a bed is going in, smaller rooms are enough; but by definition a teenager's room has to serve three functions at once: sleeping, studying and storage.
Bed size or bed frame size? The most common mix-up
In the shop, "a 90 bed" refers to the size of the mattress. The bed frame is the structure around the mattress and it adds space in every direction:
- Side rails: 4-6 cm on each side. A 90 cm bed sits in a 98-102 cm frame.
- Head end: Headboard thickness varies between 5 and 15 cm. With thick upholstered headboards the total length can reach 210 cm.
- Foot end: If there is a panel at the foot, add another 3-5 cm.
That is why, if you measure an 8 m² room and decide that "90 × 190 will fit", the frame may turn out to be 10 cm too long when it arrives. The rule: draw the size of the bed frame, not the mattress, on your room plan. We explained the step-by-step method of measuring in our article on how to measure furniture.
90 × 190, 100 × 200 or 120 × 200?
Two things decide the choice of bed in a teenager's room: the teenager's height and the space left in the room after the bed. The order is as follows:
- 90 × 190 cm: For primary and middle school age, or a teenager no taller than 175 cm. Being the most common size, bedding and mattresses are easiest to find.
- 90 × 200 cm: The right choice once height starts to increase. The width stays the same so the room plan does not change; only 10 cm of length is added. For a teenager who is growing taller, this is the smartest upgrade.
- 100 × 200 cm: High school and university years. For teens who move around in their sleep, 90 cm feels narrow; 10 cm of extra width makes a noticeable difference.
- 120 × 200 cm: For long-term use. If the room is under 11-12 m², you will have to give up a desk or a wardrobe; draw the plan before choosing this size. More details: small double bed sizes.
- 140 × 200 cm: Makes sense if the room is planned to become a guest room later; in a teenager's room layout it leaves no space for a desk and wardrobe.
We compared all single and double sizes in our articles on single bed sizes and bed sizes.
Bunk bed sizes and safety margins
In rooms with two children, a bunk bed makes you think about height rather than bed size. There are four measurements to check:
| Measurement | Value |
|---|---|
| Bunk bed mattress size | 90 × 190 / 90 × 200 cm |
| Total bunk bed height | 150-180 cm |
| Clear gap between lower and upper bed | at least 75-80 cm |
| Gap between upper bed and ceiling | at least 90-100 cm |
| Guardrail height above the mattress base | at least 16 cm |
↔ Scroll the table sideways to see all of it.
The last row is a safety measure, and the thicker the mattress, the less effective the guardrail becomes: if you put a 20 cm thick mattress on a bunk bed with a 16 cm guardrail, the protection is almost zero. On a bunk bed the mattress thickness should not exceed 16 cm. In rooms with a ceiling height below 240 cm, a 180 cm bunk bed makes it impossible to sit up on the top bunk; choose a low bunk bed in these rooms.
Teenager's room wardrobe sizes
The depth of a teenager's wardrobe is the same as an adult's, because what matters is not age but the shoulder width of the hanger.
| Measurement | Value |
|---|---|
| Wardrobe depth (with hanging rail) | 55-60 cm |
| Wardrobe depth (shelves only) | 40-45 cm |
| Door width | 45-50 cm |
| Wardrobe height | 200-220 cm |
| Gap between hanging rail and shelf (short hanging) | at least 100 cm |
| Gap between hanging rail and shelf (long hanging) | at least 150 cm |
| Door swing clearance (hinged) | at least 60 cm, 90 cm for comfortable use |
↔ Scroll the table sideways to see all of it.
A two-door wardrobe is 90-100 cm wide, a three-door 135-150 cm, and a four-door 180-200 cm. In a teenager's room a two-door wardrobe is often not enough: school clothes, sportswear and seasonal clothing each need a separate section. A three-door wardrobe is the practical minimum for a teenager's room.
If there is not 90 cm of free space in front, a hinged door cannot open fully; in that case a sliding door is the only solution, and bear in mind that a sliding wardrobe loses 5-8 cm of interior depth. For more on depth see how deep should a wardrobe be. For interior dividing and shelf layout, take a look at our article on wardrobe sizes and interior layout.
What fits in a 10 m² teenager's room?
In flats in Turkey a teenager's room is usually between 9 and 12 m². In a 10 m² room (about 300 × 330 cm) a realistic layout is this:
- Bed: A 100 × 200 cm frame, placed against the short wall. Leave at least 60-70 cm of walkway along the open long side of the frame.
- Wardrobe: Three doors, 150 cm wide, 60 cm deep. 90 cm of free space must remain in front of the doors.
- Desk: 120 × 60 cm. You need 75 cm behind it for pulling the chair back, or 90 cm if people will walk behind it.
- Remaining space: Once these three pieces are in place, about 1.5-2 m² of free space remains in the middle of the room. This space is not "wasted"; it is the part that lets the room breathe.
If the room is under 9 m², you have to compromise on one of the three pieces. The most common solution is to keep the bed at 90 × 200 and grow the wardrobe upwards: a 220 cm high wardrobe gives about 10% more interior volume on the same floor area than a 200 cm one. We gathered the selection criteria that go beyond measurements, such as materials, durability and age-based layout, in our teenager's room sizes and buying guide; you can see the models in the teenager's room category and bedroom alternatives in the bedroom category.
Frequently Asked Questions
What are the bed sizes for a teenager's room?
The standard is 90 × 190 cm. For teens who are growing taller use 90 × 200 cm, for a wider sleeping space 100 × 200 cm, and if the room allows, 120 × 200 cm. The outer size of the frame is 4-10 cm bigger than these figures in every direction.
What should the wardrobe sizes be in a teenager's room?
Depth 55-60 cm, height 200-220 cm, door width 45-50 cm. A three-door (135-150 cm) wardrobe is the practical minimum for a teenager's room; a hinged door needs at least 60 cm of free space in front, and 90 cm for comfortable use.
Will a 120x200 bed fit in a teenager's room?
It will if the room is 11-12 m² or larger. In smaller rooms a 120 × 200 frame (outer size ~130 × 210 cm) leaves no space for either the wardrobe or the desk.
How many cm should there be between the lower and upper bunk?
At least 75-80 cm of clear gap. There should also be at least 90-100 cm between the upper bunk and the ceiling so the teenager can sit up on the top bunk.
How high should a teenager's bed be?
Getting in and out is most comfortable when the top of the mattress is 45-55 cm above the floor. With storage-drawer or base-fitted frames this can exceed 60 cm; for younger children, staying below 50 cm is safer.
How many m² should a teenager's room be?
At least 9 m² for a bed, wardrobe and desk to fit together; 11-12 m² for a comfortable layout. In rooms under 8 m² you need solutions such as putting the desk at the head of the bed or taking the wardrobe up in height.