How to Measure Up for Leather King Size Beds: A Simple Sizing Guide

To measure up for a leather king size bed, you need three sets of measurements: the room, the bed frame and the route into your home. A UK king size mattress measures 150cm by 200cm, but the leather frame around it is always larger, so the figure that matters is the external frame size. Compare that with your room, allow comfortable walkways around the bed, and check that the largest boxed piece will fit through your doors and up your stairs. If all three work, the bed will fit.

Our range of modern king size leather beds UK lists full external dimensions for each design, and you can plan the rest of the room with pieces from our bedroom furniture UK sale collection. This guide shows you exactly what to measure and how to use the numbers.

What You Will Need

Gather a few simple tools before you start:

• A retractable tape measure, ideally at least five metres long
• A notepad and pencil, or a notes app on your phone
• Masking tape for marking the floor
• A second person to hold the other end of the tape, if possible

Measure in centimetres throughout. Product dimensions for beds are usually listed in centimetres, and using the same unit avoids conversion errors.

Step One: Understand Mattress Size Versus Frame Size

This is the point that catches most people out. The 150cm by 200cm king size measurement refers to the mattress only. A leather frame adds side rails, padding, a headboard and sometimes a footboard. Depending on the design, the overall frame can be noticeably wider and longer than the mattress.

Features that increase the frame size include:

• Thick padded side panels
• Wingback headboards with side wings
• Sleigh style curved ends
• Footboards, especially tall or curved ones
• Headboards that are wider than the frame

Always find the external width, length and height listed for the specific bed you are considering. Those are the numbers you will use for planning.

Step Two: Measure the Room

Measure the width and length of the room at floor level, from wall to wall. Measure at more than one point, as walls in older UK properties are not always straight, and use the smallest figure.

Next, mark the position of everything that affects the layout:

• The bedroom door and the arc of its swing
• Wardrobe doors and how far they open
• Windows, including the sill height from the floor
• Radiators, including their width and height
• Sockets, switches and any wall lights
• Chimney breasts, alcoves and sloping ceilings

Draw a simple floor plan with these features in place. Even a rough sketch makes it much easier to see where the bed can sit.

Step Three: Allow for Walkways

A bed needs space around it to be comfortable to use. Subtract the external frame width from the room width to see how much space is left on either side. Do the same with the length to see how much space remains at the foot.

A common rule of thumb is to leave at least 60cm of clear space along each side you need to access and at the foot of the bed. More is better if you can manage it, especially if two people will be moving around the room at the same time. If the bed sits against one wall, you only need a walkway on the open side, though making the bed becomes a little harder.

Remember that walkways must stay clear when doors and drawers are open. A wardrobe door that swings into the walkway beside the bed can make the room awkward to use, even if the bed technically fits.

Step Four: Check Headboard Height

Leather king size beds often have generous headboards, so check the wall where the bed will stand. Compare the headboard height with:

• The height of any windowsill behind the bed
• The bottom of any wall lights, shelves or artwork
• The height of a sloping ceiling at that point
• The top of any radiator on that wall

If the headboard will cover part of a window or radiator, consider a different wall or a design with a lower headboard.

Step Five: Allow for Ottoman Lift and Drawers

Storage beds need extra clearance. For an ottoman bed, the mattress platform lifts upward, so check that nothing above the bed will block it. Allow enough space at the opening end or side to stand and reach into the base.

For drawer beds, measure how far the drawers extend when fully open and add space for you to stand in front of them. In narrower rooms, an ottoman bed often works better than drawers, because it does not need side clearance.

Step Six: Plan Bedside Space

A king size bed looks best with bedside tables on each side, and they need to fit within the walkway space you have calculated. Measure the space between the frame and the wall on each side, then check that a bedside table will fit without blocking movement.

Height matters too. A bedside table that sits roughly level with the top of your mattress is usually the most comfortable to use. Our modern bedside cabinets UK come in a range of widths and heights to suit different frames.

Step Seven: Consider Mattress Depth

The overall height of the bed depends on both the frame and the mattress. A deep mattress raises the sleeping surface and reduces the amount of headboard visible above the pillows. Check the platform height of the frame and add your mattress depth to find the final height.

If you are buying a new mattress at the same time, our king size mattresses UK range lists depths so you can plan the finished height. Also check slat spacing against your mattress guidance, especially for memory foam.

Step Eight: Mark It Out on the Floor

Before you order, use masking tape to mark the external frame size on the floor in the position you have chosen. Walk around it, open the wardrobe and bedroom doors, and imagine getting in and out of bed. This simple step shows you how the room will feel far more clearly than numbers alone.

If the taped outline feels cramped, consider a frame with slimmer sides or a lower headboard, or think about whether a double might suit the room better.

Step Nine: Measure the Route Into the Room

A bed that fits the room still has to get there. Leather king size beds usually arrive in several boxes, but headboards and side rails can still be long and bulky. Measure each point on the route:

• Front door width and height
• Hallway width, including any tight corners
• Staircase width and the height above the stairs at each turn
• Landing width
• Bedroom door width and height

Compare these with the dimensions of the largest boxed component. In flats, check lift sizes and communal stairways too. Clear the route before delivery day.

Common Measuring Mistakes to Avoid

A few small errors account for most beds that do not fit as expected. Keep these in mind as you measure:

• Using the mattress size instead of the frame size. The frame is always larger, sometimes by a noticeable amount.
• Measuring at skirting height only. Radiators, window boards and sockets can project from the wall higher up, reducing usable space.
• Forgetting the door swing. A bedroom door that opens inwards needs a clear arc, and the bed should not sit within it.
• Ignoring carpet and underlay. Thick carpet can slightly reduce the clearance under doors when moving large pieces, and it raises the height of low frames a little.
• Measuring only one wall. Rooms in older homes are rarely completely square, so measure each wall and use the smallest figure.
• Overlooking the headboard depth. Padded and wingback headboards can stand some way out from the wall, adding to the overall length the bed takes up.

Taking a few extra minutes to double check each figure is far easier than rearranging a room around a bed that is slightly too large.

Putting the Numbers Together

Once you have your measurements, check each one against the bed you are considering. The external frame should leave comfortable walkways, the headboard should sit well against your wall, any storage should have space to open and the largest box should fit through your route. For a full breakdown of king size frame and room figures, see our guide to UK king size bed dimensions for frame, mattress and room, and for bedside planning, our article on bedside table measurements for UK bedrooms explains height and width in detail.

When everything lines up, you can order with confidence. You can browse leather king size beds with full dimensions listed at Furniture in Fashion, with free delivery to most UK mainland postcodes.

Frequently Asked Questions

What size is a UK king size bed?

A UK king size mattress measures 150cm by 200cm. The frame will be larger, so always check the external dimensions of the specific bed.

What size room do I need for a king size bed?

It depends on the frame, but you need enough space for the external frame plus a clear walkway along each side you use and at the foot. Measuring and taping the outline on the floor is the most reliable test.

Is a UK king size the same as a US king?

No. A UK king size is smaller than a US king. Always use UK sizes when buying a bed and mattress for a UK home.

Will a king size bed fit up my stairs?

Usually, yes, as most leather king size beds arrive in sections. Check the size of the largest component, usually the headboard, against the narrowest point of your stairs and landing.