Room size · 20 × 20
A 20×20 room is 400 square feet
That’s 44.44 square yards or 37.16 square meters — also written 20×20. The room below is drawn to scale, furniture and all, so the number has something to stand next to.
Drawn to scale. Grid squares are 1 foot. Shown: car.
Parking, doors and walk-around room
Garage layouts are decided by car widths and door swings, not floor area. The facts above come from a drawn fit — a typical mid-size sedan against this footprint’s real walls — and the walk-around inches are measured, not assumed. Garage door widths are named as the conventions they are.
- Two cars park side by side — each is a typical mid-size sedan (about 15 ft 7 in long) — with 30 in beside each wall and 36 in between the doors.
- With the cars in, only 4 ft 4 in remains at the front wall — not enough for a bench and the space to stand at it.
- A common garage door is 8 or 9 ft wide, against this footprint’s 20 ft opening wall.
The same room as a living room
400 square feet reads two ways, and both are drawn from the same measured floor. Laid out as a living room:
- A typical 84-inch three-seat sofa on one long wall faces a typical 60-inch TV console on the other, with 15 ft 8 in between seat and screen.
- A coffee table sits 16 in off the sofa — the commonly used reach — a typical 48 by 24 inch coffee table.
- A second seat fits across the end wall: a typical 60-inch loveseat.
- The far end takes a typical six-seat 72 by 36 inch dining table with 3 ft of chair room kept clear on both long sides — this is great-room territory.
Slab, walls and what this size costs to finish
A 20×20 garage is 400 ft² of slab and 80 linear feet of wall. The concrete calculator takes the slab side — depth, bags or truck yards — and the paint calculator handles the walls if you’re finishing the inside.
Common questions
How many square feet is a 20x20 room?
A 20×20 room is 400 square feet — multiply the two wall lengths. That’s 44.44 square yards or 37.16 square meters, and the same answer whether you write it 20x20 or 20x20.
Does a car fit in a 20x20 garage?
Two cars park side by side — each is a typical mid-size sedan (about 15 ft 7 in long) — with 30 in beside each wall and 36 in between the doors.
What garage door does a 20-foot wall take?
Two cars park side by side — each is a typical mid-size sedan (about 15 ft 7 in long) — with 30 in beside each wall and 36 in between the doors.
The rest of the toolbox
Measured this room? Take the number to whichever material you’re buying — every tool runs in your browser, same as this page.