Though end tables can be afterthoughts when designing your living room, selecting the correct size is important. Side tables are often resting spots for drinks and the ideal location for a table lamp. To keep from straining to set a drink down or being blinded by lamplight, we offer some important size guidelines to follow when selecting a side table.
End tables should be within two inches of a sofa's arm height. For example, if the sofa's arm is 22 inches tall, a proper end table can be anywhere from 20-24 inches tall.
The bottom of a lampshade shouldn't fall higher than eyelevel when you're seated on the sofa or chair that's placed next to the lamp.
The ideal depth of an end table is equal to the depth of the sofa or chair it's placed next to.