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How much sq ft is 16x20?

320 square feet. The calculation: 16 feet x 20 feet = 320 sq ft. This is a versatile size that shows up across residential construction: a large family room, a generous primary suite, a two-car garage on the small side, a substantial deck, or a workshop.

As a living space, 320 sq ft holds a full furniture arrangement with distinct zones. As a deck, it fits dining and lounge areas comfortably. Material estimates: flooring needs 335-350 sq ft with waste; deck boards, joists, and concrete are all calculated off the same base area. A useful check at this size: verify both dimensions independently rather than trusting a label, since a room that's actually 15'6" x 19'6" is 302 sq ft, an 18 sq ft difference.

When your source is a drawing rather than the physical space, MeasureFloorPlan lets you confirm both wall lengths and the true traced area after calibrating the plan's scale, so material orders and area calculations rest on real geometry instead of nominal labels.