How many square feet is a 16×20 room?
16 ft × 20 ft = 320 sq ft · 35.56 sq yd · 29.73 m² · perimeter 72 ft
The math is one line: length × width. Sixteen by twenty is great-room territory — 320 square feet is the footprint of many open-plan living areas, and also a common one-car-plus-workshop garage size.
Check it — or change it — in the calculator
The room is pre-loaded below. Adjust the numbers to your real measurements, add an alcove or subtract an island as another row, and the totals update as you type.
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| Area incl. waste | — |
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Everything is calculated locally in your browser — no measurements are sent anywhere. Mixed units are converted exactly (1 ft = 0.3048 m, 1 sq yd = 9 sq ft, 1 acre = 43,560 sq ft).
What is a 16×20 room usually used for?
- Great room / open living-dining area — two seating zones or seating plus a dining table for eight
- Primary suite — sleeping zone plus sitting room area before the ensuite
- Home gym or workshop — racks and benches along the walls, open floor in the middle
- Garage conversion shell — the starting footprint for an accessory dwelling unit (ADU) plan
At the calculator's default price of $4.50 per sq ft with 10% waste, flooring this room costs about $1,584 in materials — change the price field to your product to get your own figure.
The same room in other units
| Unit | Area |
|---|---|
| Square feet | 320 sq ft |
| Square yards | 35.56 sq yd |
| Square meters | 29.73 m² |
| Square inches | 46,080 sq in |
| Acres | 0.0073 acres |
Other common room sizes
Questions about 16×20 rooms
Is a 16×20 room 320 sq ft including the closet?
The 320 sq ft is the full rectangle, walls to walls, so a closet inside that outline is already included. A closet outside the rectangle adds its own little rectangle on top — add it as a row in the calculator.
How much flooring do I need for a 16×20 room?
Order for 352 sq ft — the area plus 10% waste for cuts. For diagonal or herringbone layouts use 15%, i.e. about 368 sq ft. The flooring calculator turns that into boxes for your specific product.