Knee Room
Keeping your guests comfortable is important. Each person needs 12 inches of knee space when sitting at a dining room table, although 14 inches is even better, notes Hgtv.com.
Needed Space
In addition, diners should have 18 inches to 24 inches of space in which to move while sitting down at the tables and pulling their chairs up to the table, explains Furniturefirst.com. They also need 24 to 30 inches of space at the table so they aren’t bumping elbows with the person next to them. Ideally, there will be 4 or 5 feet between the table and the wall.
Regulation Height
The regulation height of a dining room table is 29.5 inches, although they are made in a lower size (27.5) for shorter individuals. Dining room chairs should be 18 inches high at the seat, according to Unique-home-décor-ideas.com. Most dining room tables are 32 inches wide, so your dining room should be at least 94 inches wide.