Pick up the table and take it to a place where you have room to work, such as out in a garage. Set the table, with the top down, on the floor.
Find and remove the screws, if any, used to secure the legs to the table with the screwdriver.
Measure the height of each of the table legs with the tape measure. Make a note of the measurement of the shortest table leg.
Measure the other table legs to the measurement you noted in Step 3. Make a mark on the each table leg with the pencil.
Place a carpenter's square on the pencil marks and draw a straight line. This will be where the table legs need to be cut or trimmed.
Set one of the table legs on a pair of saw horses and secure it with a clamp.
Plug the circular saw into an electrical outlet. Align the blade of the saw on the pencil line you made in Step 5. If you do not have a circular saw, use a hand saw.
Pull the trigger on the saw and cut along the line. Repeat Steps 6 through 8 for the remaining table legs.
Reattach the legs to the table and turn it right-side up. Place a level on the table to see if it sits level on the floor.