How Many Square Feet Is a 50x100 Room?
A 50 ft × 100 ft room equals 5,000 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 50x100 Room
| Metric | Value |
|---|---|
| Floor area | 5,000 sq ft |
| Floor area (m²) | 464.52 m² |
| Floor area (sq yd) | 555.56 sq yd |
| Perimeter | 300 ft |
| Wall area (8 ft ceiling) | 2,400 sq ft |
| Wall area (9 ft ceiling) | 2,700 sq ft |
| Wall area (10 ft ceiling) | 3,000 sq ft |
Common Uses for a 50x100 Space
- warehouse
- large shop
At 5,000 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 50' × 100' room, buy enough flooring to cover 5,000 sq ft plus a waste allowance:
| Flooring Type | Waste % | Buy This Much |
|---|---|---|
| Laminate / LVP (plank) | 10% | 5,500 sq ft |
| Hardwood | 10% | 5,500 sq ft |
| Ceramic tile (straight) | 10% | 5,500 sq ft |
| Ceramic tile (diagonal) | 15% | 5,750 sq ft |
| Carpet | 10% | 5,500 sq ft (612 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 50x100 Room?
With 8 ft ceilings you'll paint about 2,400 sq ft of wall. A gallon covers ~350 sq ft, so you'll need 7 gallons per coat. Plan on two coats for a color change.
Detailed breakdown on our Paint Calculator.
Is a 50x100 Room Big?
This is a spacious footprint — think workshop, pole barn, or open-plan great rooms in larger homes.
How Much Does It Cost to Build a 50x100 Room?
At typical US rates of $150–$300 per sq ft for new construction, a 50x100 addition would cost roughly $750,000–$1,500,000. For remodels:
- Basic flooring replacement: $15,000–$50,000
- Mid-range remodel: $250,000–$500,000
- Full gut renovation: $500,000–$1,250,000
Refine with our Cost per Square Foot Calculator.
Frequently Asked Questions
How many square feet is 50x100?
50 × 100 = 5,000 square feet.
How many square meters is 50x100?
464.52 m².
How many tiles will fit in a 50x100 room?
Depends on tile size. 12"×12" tiles = 5,500 tiles (with 10% waste). See our Tile Calculator for 6", 18", and 24" sizes.
How much carpet do I need for a 50x100 room?
555.56 sq yd minimum, or 611.11 sq yd with 10% waste for cuts and seams.