How Many Square Feet Is a 24x36 Room?
A 24 ft × 36 ft room equals 864 square feet. Use the calculator below to double-check or customize with waste and cost.
Last updated:Tip: If you only have the diameter, divide by 2 to get the radius.
L-shape = two rectangles sharing a corner.
Add one row per rectangle and we'll sum them.
Key Measurements for a 24x36 Room
| Metric | Value |
|---|---|
| Floor area | 864 sq ft |
| Floor area (m²) | 80.27 m² |
| Floor area (sq yd) | 96.00 sq yd |
| Perimeter | 120 ft |
| Wall area (8 ft ceiling) | 960 sq ft |
| Wall area (9 ft ceiling) | 1,080 sq ft |
| Wall area (10 ft ceiling) | 1,200 sq ft |
Common Uses for a 24x36 Space
- detached shop
- small barn
At 864 sq ft, this falls in the xlarge category — best suited for two-car garages, workshops, or open great rooms.
How Much Flooring Will You Need?
For a 24' × 36' room, buy enough flooring to cover 864 sq ft plus a waste allowance:
| Flooring Type | Waste % | Buy This Much |
|---|---|---|
| Laminate / LVP (plank) | 10% | 951 sq ft |
| Hardwood | 10% | 951 sq ft |
| Ceramic tile (straight) | 10% | 951 sq ft |
| Ceramic tile (diagonal) | 15% | 994 sq ft |
| Carpet | 10% | 951 sq ft (106 sq yd) |
Need an exact estimate? Use our Flooring Calculator for plank count, or the Tile Calculator for boxes of tile.
How Much Paint for a 24x36 Room?
With 8 ft ceilings you'll paint about 960 sq ft of wall. A gallon covers ~350 sq ft, so you'll need 3 gallons per coat. Plan on two coats for a color change.
Detailed breakdown on our Paint Calculator.
Is a 24x36 Room Big?
This size is typical of a two-car garage or a very large open living space.
How Much Does It Cost to Build a 24x36 Room?
At typical US rates of $150–$300 per sq ft for new construction, a 24x36 addition would cost roughly $129,600–$259,200. For remodels:
- Basic flooring replacement: $2,592–$8,640
- Mid-range remodel: $43,200–$86,400
- Full gut renovation: $86,400–$216,000
Refine with our Cost per Square Foot Calculator.
Frequently Asked Questions
How many square feet is 24x36?
24 × 36 = 864 square feet.
How many square meters is 24x36?
80.27 m².
How many tiles will fit in a 24x36 room?
Depends on tile size. 12"×12" tiles = 951 tiles (with 10% waste). See our Tile Calculator for 6", 18", and 24" sizes.
How much carpet do I need for a 24x36 room?
96.00 sq yd minimum, or 105.60 sq yd with 10% waste for cuts and seams.