How to Measure Up for Low Wooden Platform Beds: A Simple Sizing Guide

To measure for a low wooden platform bed, start with the external frame size rather than the mattress size, then measure the length and width of your room, the clearance you need on each side, and the route the bed will take into the room. Because platform frames sit close to the floor and often extend beyond the mattress, they can take up more floor space than you expect. As a rule of thumb, allow at least 60 cm of clear space on each side you use and at the foot, and check that the frame’s overall height, including the mattress, will be comfortable for you to get in and out of.

Low platform beds have a calm, grounded look that suits modern, Japandi and minimalist bedrooms. Their simplicity makes them popular, but it also means the proportions need to be right. You can browse low and platform styles in our modern wooden beds UK range, and our bedroom furniture UK sale section has pieces that suit the same low level aesthetic.

What Makes a Platform Bed Different

A platform bed is a frame with a solid or slatted surface that supports the mattress directly, without a separate box spring or divan base. Low versions sit close to the floor, sometimes only 15 to 25 cm high before the mattress is added. Many have a wide surround or ledge that extends beyond the mattress on the sides and foot, giving the characteristic floating or framed look.

This design affects measuring in two ways. First, the external dimensions can be considerably larger than the mattress. Second, because the bed is low, you may need a little more space around it to get up comfortably.

Step One: Know Your Mattress Size

Start with the mattress, because the frame is built around it. Standard UK sizes are:

• Single: 90 x 190 cm
• Small double: 120 x 190 cm
• Double: 135 x 190 cm
• King size: 150 x 200 cm
• Super king: 180 x 200 cm

European sizes differ, so if you already own a mattress, measure it rather than relying on the label. A frame designed for a UK king will not suit a European king mattress, and the reverse is also true.

Step Two: Find the External Frame Size

Look for the overall width, length and height in the product details. For a standard frame, the external size may be only a few centimetres larger than the mattress. For a platform bed with a wide surround, it can be 20 to 40 cm wider and longer. A king size platform bed with a generous ledge could measure around 180 to 190 cm wide and 220 to 240 cm long.

That difference matters. In a typical UK double bedroom of around 3 by 3.5 metres, an extra 30 cm on the width and length can decide whether bedside tables and a wardrobe still fit comfortably.

If you are considering a larger frame, our king size wooden beds UK sale range lists external measurements so you can compare designs easily.

Step Three: Measure the Room

Measure the full length and width of the bedroom at floor level. Then note the position of:

• Doors and the direction they swing
• Windows, sills and radiators
• Built in wardrobes and their door clearance
• Sockets and light switches, especially for bedside lamps
• Chimney breasts, alcoves or sloping ceilings

Draw a simple plan on paper or use masking tape on the floor to mark the external frame footprint. Seeing the outline in the room is the most reliable way to judge how it will feel.

Step Four: Plan the Clearance

Clearance is the space you need around the bed to move, make it and reach storage. For low beds, it deserves particular attention.

Side clearance

Allow at least 60 cm on each side you use to get in and out. For a more comfortable feel, 70 to 90 cm is better. Because you are getting up from a lower height, a little extra room helps you stand without bumping into furniture.

Foot clearance

If you walk past the foot of the bed, leave at least 60 to 70 cm. If a wardrobe or chest of drawers faces the foot of the bed, check that its doors or drawers can open fully without hitting the frame.

Wide surrounds and ledges

If your chosen platform has a wide ledge, remember that the ledge itself sits in your walking path. Low ledges can catch toes in the dark, so a bit more clearance is sensible.

Step Five: Check the Height

A low platform bed looks striking, but it needs to be comfortable. Measure the height of the frame and add the depth of your mattress. Most adults find a total sitting height of around 40 to 50 cm workable for a low bed, while standard beds tend to sit around 50 to 60 cm.

If anyone in the household has knee or back issues, sit on a surface of similar height before you buy. A low bed that looks wonderful but is difficult to rise from will be frustrating day to day.

Mattress depth makes a big difference here. A deep hybrid mattress of 30 cm will raise the bed far more than a 20 cm foam mattress. If you are buying a new mattress at the same time, our mattresses UK sale collection lists depths so you can calculate the finished height.

Step Six: Plan Bedside Tables

Bedside tables should sit roughly level with the top of the mattress. With a low platform bed, standard bedside tables may look too tall. Low profile tables, floating shelves or a wide ledge on the platform itself often work better.

Our guide to bedside table measurements for UK bedrooms explains how to match table height to bed height. If you are weighing up a larger bed, our guide to UK king size bed dimensions sets out frame and room sizes in more detail.

Step Seven: Measure the Access Route

Even a flat packed bed has large components. Measure the width and height of your front door, hallway, staircase and bedroom door, plus any tight turns. Low platform beds often have long side rails and wide headboard panels, so compare these with the narrowest point on the route.

In flats, check lift dimensions if there is one. In older houses, look out for low beams over stairs and narrow landings.

Common Measuring Mistakes

• Using mattress size instead of frame size: This is the most frequent error and can leave you with a bed that is too large.
• Forgetting skirting boards: Skirting can reduce usable floor width by a couple of centimetres on each wall.
• Ignoring door swing: A door that opens into the room needs its full arc kept clear.
• Overlooking radiators: Placing a bed tight against a radiator can reduce heat output and dry out the wood.
• Not allowing for bedding: A thick duvet overhangs the frame, which reduces clearance slightly in practice.

Measuring for Awkward Rooms

Not every bedroom is a neat rectangle. Loft conversions, bay fronted rooms and new build bedrooms with boxed in pipework all need extra thought.

Sloping ceilings

Low platform beds are often a good fit under eaves, because their modest height keeps your head clear when sitting up. Measure the ceiling height at the point where your head will be when you sit against the headboard, not just at the highest part of the room. As a guide, you will want at least 90 cm of clear headroom above the mattress surface to sit up comfortably.

Bay windows and alcoves

A bay can seem like a natural spot for a bed, but the curve or angle of the walls rarely matches the straight edge of a platform frame. Measure the narrowest point of the recess, not the widest, and remember that curtains and radiators in a bay reduce usable space.

Boxed in pipes and uneven walls

Measure at floor level and again at around 40 cm high, because boxing and skirting can project further at the base. On uneven floors, check whether the frame has adjustable feet or whether you may need discreet packers to keep it level.

Taking these extra measurements at the start saves a great deal of frustration once the bed arrives.

Styling a Low Platform Bed

Once the measurements work, styling is straightforward. Low beds suit calm palettes, natural linen bedding and simple wall art hung low to keep the eye at a comfortable level. A rug that extends well beyond the frame helps define the bed and softens the floor. Keep surrounding furniture low as well, so the room feels balanced rather than mismatched in height.

When your plan is ready, you can explore the full range of bedroom pieces at Furniture in Fashion, with free delivery to most UK mainland postcodes.

Frequently Asked Questions

How much bigger is a platform bed than the mattress?

It depends on the design. Some add only a few centimetres, while those with wide ledges can be 20 to 40 cm wider and longer than the mattress. Always check the external measurements.

Are low platform beds comfortable to get out of?

Most people find them comfortable once they adjust. If you have mobility concerns, choose a slightly higher frame or a deeper mattress to raise the sitting height.

Do platform beds need a special mattress?

No. Most foam, hybrid and pocket sprung mattresses work well on a platform, provided the base is solid or has closely spaced slats.

What room size suits a king size platform bed?

Allowing for clearance, a room of around 3 by 3.5 metres or larger usually works well, though the exact size depends on the frame’s surround and other furniture.