Use a measuring tape to determine the desired height of the table.
Measure the current height of the table.
Subtract the desired height from the current height. The difference is the amount you will remove from the table legs.
Cut a strip of cardboard, 2 inches by the amount you will remove from the table legs.
Flip the table over onto its top.
Hold the cardboard piece vertically along the side of one table leg. The 2-inch end of the cardboard should be flush with the end of the leg.
Make a straight pencil mark on the leg, along the edge of the cardboard.
Repeat the procedure of holding the cardboard and marking with the pencil on all four sides of each table leg.
Turn the table on its side.
Using a handsaw, cut off the end of each table leg at the pencil marks.
Sand the bottom of each freshly cut leg before flipping it over and using your newly adjusted table.