How Do You Raise Dining Chair Height?

You can raise dining chair height by fitting leg risers or extenders to the chair feet, adding a firm seat cushion, or replacing the existing feet with taller ones. Leg risers give the largest and most stable increase, typically 5 to 12 centimetres. A firm cushion adds 4 to 6 centimetres and is the quickest option. Which you choose depends on how much height you need and whether the chair legs are straight enough to accept risers.

Before doing any of this, measure. The gap between the top of the seat and the underside of the table should be 28 to 30 centimetres. If your current gap is larger than that, raising the chair is the right correction. If it is already within range and the chair still feels low, the issue is likely the table height rather than the chair.

Measuring What You Actually Need

Measure from the floor to the top of the seat cushion, with the cushion uncompressed. Then measure from the floor to the underside of the table, or to the underside of the apron rail if the table has one, since that rail is what your thighs meet.

Subtract the seat height from the table clearance. That difference is your working gap.

A standard UK dining table sits at 74 to 76 centimetres. A standard dining chair seat sits at 45 to 47 centimetres. That combination gives roughly 28 centimetres, which is the target.

If your gap is 33 centimetres, you need around 4 centimetres of lift. If it is 38 centimetres, you need closer to 9 centimetres, which is beyond what a cushion can sensibly provide.

Also check whether the chair can still tuck under the table after being raised. Chairs with arms are the usual casualty here, since raising the seat lifts the arms into the table apron.

Leg Risers and Extenders

Leg risers are the most substantial solution. They come in several forms and the right one depends on the leg profile.

Cup style risers are shallow cups that the chair leg sits into, usually with a recess sized for a common leg diameter. They suit round or square legs of standard section and typically add 5 to 8 centimetres. They are quick to fit and require no modification to the chair, though they can be knocked off if the chair is dragged rather than lifted.

Screw in extenders replace the existing foot or glide. If your chair has a threaded insert in the base of each leg, an extender screws straight in. This is the most secure option because the extender becomes part of the chair, and heights of 5 to 10 centimetres are common.

Timber blocks are the bespoke approach. Cut four blocks from hardwood to the exact height you need, drill and screw them into the base of each leg, and finish them to match. This gives full control over the height and looks intentional rather than added on. It is the best option for angled or tapered legs where standard risers will not sit flat.

Whichever you choose, all four legs must be raised by exactly the same amount. A chair with unevenly raised legs rocks, and on a raised chair that instability is more pronounced because the centre of gravity has moved up.

Cushions as a Height Solution

A firm cushion is the simplest route and adds 4 to 6 centimetres of usable height. It only works if the cushion is genuinely firm, since a soft cushion compresses under body weight and the actual height gain disappears.

High resilience or high density foam is essential. Fibre filled cushions flatten to almost nothing under an adult and provide no meaningful lift.

Fix the cushion in place. A raised cushion that slides is a hazard, particularly for children or anyone with limited mobility. Ties to the chair back posts are the most reliable, with non slip backing as a fallback.

Bear in mind that a cushion raises the seat but does not raise the back support, so the backrest now meets you lower down your spine than the designer intended. On a chair with a low back this can make the chair less comfortable rather than more, even though the height is now correct.

Replacing Feet and Glides

Many chairs have plastic glides pressed or screwed into the base of each leg. Replacing these with taller versions gains 2 to 4 centimetres, which is often exactly the amount needed for a marginal adjustment.

Pull out the existing glide, measure the diameter of the hole and the depth, then fit a taller equivalent. Threaded glides with an adjustable stem are especially useful because they let you fine tune each leg independently, which also solves any rocking at the same time.

This is the most discreet option visually, since a taller glide reads as part of the chair rather than an addition.

Lowering the Table Instead

Sometimes the chair is correct and the table is the problem. If your chairs sit at a standard 45 centimetres but your table is 80 centimetres tall, raising the chairs to compensate leaves everyone with their feet off the floor.

In that situation, either lower the table or accept the chair height and add a footrest. Cutting table legs is possible on a solid timber table but it is irreversible, so measure carefully and cut all four legs on a marked line with a jig.

A footrest is the less drastic fix. A low rail or a slim box under the table lets shorter household members rest their feet, which removes the pressure on the backs of the thighs that comes from dangling legs. It costs nothing and reverses easily.

Safety Considerations

Raising a chair moves its centre of gravity up and makes it easier to tip, particularly backwards. Anything above around 10 centimetres of added height on a standard dining chair starts to affect stability noticeably.

Check the footprint. Chairs with legs that splay outwards remain stable when raised. Chairs with vertical legs set close to the seat edges are less forgiving.

Test the raised chair without anyone in it first by pushing it firmly at the top of the back. If it lifts easily on two legs, the height gain is too much for that frame.

Avoid raising chairs that will be used by young children beyond a modest amount. A proper junior chair or a booster designed for the purpose is safer than a modified adult chair.

Where the height difference is large, replacing the chairs is usually the safer and simpler answer than engineering around it. Our dining chairs UK sale lists seat heights on every product so you can match to your table before ordering.

Getting the Combination Right From the Start

If you are furnishing from scratch, buying the table and chairs together removes this problem entirely, since seat heights are designed against the table apron. Our modern dining table and chairs sets UK are matched for exactly that reason.

Where you already have a table you want to keep, note its height and the apron depth before shopping. A table with a deep apron needs a lower chair than the tabletop height alone would suggest, and that is the detail that most often catches people out.

Counter height and bar height situations are different again and should not be solved with risers. If your surface sits at 90 centimetres or higher, you need a stool rather than a raised chair, and our bar stools UK sale range covers the standard counter and bar heights. Everything is available at Furniture in Fashion with free delivery to most UK mainland postcodes.

Frequently Asked Questions

How much can I safely raise a dining chair?

Up to around 10 centimetres on a chair with a stable footprint. Beyond that, the raised centre of gravity makes tipping backwards noticeably easier.

What is the correct height gap between chair and table?

28 to 30 centimetres measured from the top of the seat to the underside of the table or its apron rail.

Do seat cushions actually raise chair height?

A firm high density foam cushion adds 4 to 6 centimetres of usable height. Soft or fibre filled cushions compress under body weight and give almost no real gain.

Can I put risers on chairs with angled legs?

Standard cup risers rarely sit flat on angled legs. Cut timber blocks with a matching angle on the top face, or use adjustable threaded glides instead.

Should I raise the chair or lower the table?

Measure both against the standards first. If your chairs are at 45 to 47 centimetres and the gap is still wrong, the table is the outlier and adjusting it is the better fix.