Famous Dance Floor Size For Wedding 100 Guests References. With 300 guests you need a 600 foot dance floor. Web if you figure 40 of 100 guests will dance, then you need about a 200 square foot dance floor.

Here’s a good rule of thumb: So, if you have 150 guests, you would need a 15' x 15' dance floor; Guests need the dance floor area to be clearly defined and separated from.