Units: Metric (m)
Room & Layout Inputs
Switching updates labels only; values persist.
Where the main sofa back aligns.
Typical: 0.85–1.0 m or 34–40 in.
Indents sofa from the nearest corner along its axis.
Results & Recommendations
Enter values and click Calculate.
Room orientation considered—
Max main sofa length—
Estimated seating capacity—
Front walkway status—
L-shape feasibility—
Suggested arrangement—
TV viewing distance—
Tips: Adjust seat width for comfort. Increase end clearances for lamps and tables.
Visual Options
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Preview updates on Calculate and input changes.
Example Data
| Room (L × W) | Layout | Max sofa length | Seats | Front walkway | L-shape feasible |
|---|---|---|---|---|---|
| 5.5 m × 3.8 m | Straight | 4.3 m | 7–8 | OK (≥ 0.76 m) | Yes |
| 4.2 m × 3.2 m | L-shape | 3.0 m | 5–6 | Tight (≈ 0.60 m) | Maybe |
| 3.6 m × 3.0 m | Loveseat + chairs | 2.4 m | 3–4 | OK (≥ 0.76 m) | No |
Recommended Clearances & Reach Ranges
| Zone | Minimum | Preferred | Notes |
|---|---|---|---|
| Primary walkway | 0.76 m (30 in) | 0.91 m (36 in) | Main circulation paths between seating and doors. |
| Between sofa and coffee table | 0.40 m (16 in) | 0.45 m (18 in) | Closer for reach, but allow movement comfortably. |
| Side clearance at sofa ends | 0.45 m (18 in) | 0.60 m (24 in) | Room for end tables, lamps, and access. |
| Behind sofa (floating layout) | 0.30 m (12 in) | 0.45 m (18 in) | Increase when sofa backs face traffic. |
| TV viewing distance | 1.2× screen diagonal | 1.6× screen diagonal | Adjust for resolution and preference. |
Seating Capacity Guide by Sofa Length
| Sofa length | Seats @ 0.53 m | Seats @ 0.56 m | Seats @ 0.61 m |
|---|---|---|---|
| 2.0 m | 3 | 3 | 3 |
| 2.4 m | 4 | 4 | 3 |
| 3.0 m | 5 | 5 | 4 |
| 3.6 m | 6 | 6 | 5 |
| 4.2 m | 7 | 7 | 6 |
Capacities use floor(length ÷ seat width). Adjust for arms and cushions.
Layout Fit Matrix (Room Size vs. Arrangement)
| Room (L × W) | Straight | L-shape | U-sectional | Loveseat + chairs |
|---|---|---|---|---|
| 3.0 m × 3.0 m | Good | Tight | No | Good |
| 3.6 m × 3.0 m | Good | Fair | Tight | Good |
| 4.2 m × 3.2 m | Good | Good | Fair | Good |
| 5.5 m × 3.8 m | Good | Good | Good | Good |
| 6.0 m × 4.5 m | Good | Good | Good | Good |
Matrix assumes typical depths and clearances; verify with your measurements.
Formulas Used
- Orientation: longer side = max(room length, room width); shorter side = min(…).
- Max sofa length (axis): axis length − 2 × side clearance.
- Seating capacity: floor(max main sofa length ÷ seat width).
- L-shape feasibility: shorter side ≥ sofa depth + front clearance + 0.30 m.
- Front walkway status: front clearance ≥ target walkway (0.76 m or 0.91 m).
- TV viewing distance: 1.2× to 1.6× screen diagonal (inches) × 0.0254.
- Unit conversion: ft ↔ m by 1 ft = 0.3048 m.
How to Use
- Select units, then enter room length and width.
- Choose layout and anchor wall to position the sofa.
- Set sofa depth, seat width, and clearances for comfort.
- Optionally add TV diagonal for viewing guidance.
- Click Calculate to view capacity and the live plan.
- Use CSV, PDF, or PNG to export findings and visuals.
FAQs
Many planners use about 0.45 m (18 in) between sofa front edge and coffee table for comfortable reach and movement.
A common target is 0.76 m (30 in) minimum, with 0.91 m (36 in) preferred for enhanced comfort around major traffic routes.
Divide usable sofa length by a comfortable seat width. Many choose 0.53–0.61 m (21–24 in) per person, depending on style and cushions.
A simple rule is 1.2–1.6 times the TV diagonal (in inches), converted to meters. Adjust for your preference and resolution.
Yes. Adjust clearances and seat width downward slightly, switch to loveseats or chairs, and prioritize traffic flow for compact spaces.