Room & fit tool
Rug Size Calculator & Visualizer
Enter the room, border, and furniture measurements to compare a calculated maximum with common nominal rug sizes.
Plan dimensions
Measurements calculate in millimeters.
Room fit calculated
9 x 12 ft maximum
Calculated maximum: 108 x 144 in
Nearest sourced nominal sizes
- 9 x 12 ft
- 8 x 10 ft
- 7 x 9 ft
Input recap
- Room
- 12 ft x 15 ft
- Border
- 18 in
- Layout
- Room only
Assumptions
- The room is rectangular and the requested border is uniform.
Planning warnings
- Nominal rug sizes are planning suggestions, not guarantees of availability or fit.
Physical verification matters
Tape the outline and confirm exact product dimensions before purchase.
Nominal sizes are planning suggestions; actual rug dimensions and availability vary.
Source date: July 10, 2026. Home Depot rug size guide
How the estimate works
Maximum rug width and length equal the room dimensions minus twice the exposed-floor border. Furniture modes then filter nominal suggestions against the entered furniture footprint.
Nominal size reference
Rug size chart: US nominal sizes
Compare the nine rectangular nominal sizes used by the visualizer. Metric dimensions are rounded conversions for planning, not separate product specifications.
| Nominal size | Rectangular area | Approximate metric size |
|---|---|---|
| 3 x 5 ft | 15 sq ft | 91 x 152 cm |
| 4 x 6 ft | 24 sq ft | 122 x 183 cm |
| 5 x 7 ft | 35 sq ft | 152 x 213 cm |
| 6 x 9 ft | 54 sq ft | 183 x 274 cm |
| 7 x 9 ft | 63 sq ft | 213 x 274 cm |
| 8 x 10 ft | 80 sq ft | 244 x 305 cm |
| 9 x 12 ft | 108 sq ft | 274 x 366 cm |
| 10 x 13 ft | 130 sq ft | 305 x 396 cm |
| 12 x 15 ft | 180 sq ft | 366 x 457 cm |
Actual product dimensions and availability vary. Tape the exact seller-listed dimensions in the room before buying.
Dataset checked 2026-07-10. See Sources and verification for the recorded guide and purchase check.
Guides for this calculation
Check the measurements, assumptions, and worked examples in the related guides. Return to Room fit planning for the full decision sequence, or review the tool methodology for formulas and limits.