You can love a dining table and still dread sitting at it. Elbows knock the edge, knees catch on the frame, or you feel like a child peering over a counter. Nine times out of ten the culprit is not the table or the chair on its own. It is the distance between them.
Most tables are about 71–76 cm high, and 75 or 76 cm is the most common. Most dining chairs have a seat around 45–48 cm off the floor. Subtract one from the other and you get the first gap: from the seat up to the top of the table. Furniture guides agree that about 25–30 cm feels natural. Less than that and the table sits uncomfortably high against your ribs. Much more and you are reaching down to your plate.
The second gap is hidden. Under the tabletop there is usually a frame (the apron) running around the edge. The space between the seat and the underside of that frame is where your thighs and knees live. Guides suggest at least about 20 cm there, and more for taller people. This is the number most people forget to check, because a table can look fine from above and still leave no room for legs.
Before you replace anything, try the cheap fixes. A firm cushion on the seat raises you by a few centimetres, which helps when the table feels high. Felt or rubber pads under the chair legs add a little height too, and removing worn-out ones takes it back down. If the table is too low for the chairs, look for slimmer-framed chairs rather than a new table. Second-hand chairs are a good way to test a different seat height: borrow one for a week before you commit to a set of six.
Swapping which chairs go where also works. Armchairs often look best at the ends of a table, while armless chairs tuck in neatly along the sides, which saves floor space as well.
All you need is a tape measure. Measure from the floor to the top of the table. Then measure from the floor to the underside of the frame at the spot where your legs would go. For chairs, measure from the floor to the top of the seat (with the cushion, if it has one) and, if they have arms, to the top of the armrest. Four numbers are enough to put into the sliders above before you buy anything. When shopping online, check that a listing gives the seat height. If it only shows overall height, look for the seat figure in the specifications, or ask the seller.
These are rules of thumb for an average adult. A tall household may want a few extra centimetres of legroom, and a child sitting at a family table will often need a booster cushion. A much higher or lower table (a counter, a coffee table used as a desk) follows different seat heights altogether. If everyone in your home is comfortable at your current table, the numbers do not need to match perfectly. The goal is a table you actually want to linger at, not a spreadsheet you pass.