How tall should chairs be for a 30-inch table?

Chairs for a 30-inch table should typically be between 18 and 20 inches tall when measured from the seat to the floor. Generally, the seat height of a chair should be 10 to 12 inches lower than the height of a tabletop. Tables measuring 30 inches in height are generally standard height and should work well with most standard dining chairs. Find a wide range of dining chairs on 1stDibs.