RandoziRoom Capacity Calculator
Enter the size of a room and the area to subtract for a stage or a bar. You get the number of people for the layout you pick and for the other layouts, from an area per person you can change. This is a planning estimate: it is not a safety rating or a legal occupancy limit.
Estimated capacity (planning only)
114 people
Planning estimate only, NOT a fire-safety or legal occupancy figure. The permitted maximum depends on exits, door widths, fire rules and the venue's own limits: check your local regulations and ask the venue or the fire authority.
| Layout | m² per person | Usual range | People |
|---|---|---|---|
| Theatre | 0.7 | 0.5 to 0.9 | 114 |
| Classroom | 1.6 | 1.2 to 2 | 50 |
| Banquet | 1.5 | 1.2 to 1.8 | 53 |
| Standing | 0.5 | 0.3 to 0.6 | 160 |
| Cocktail | 0.9 | 0.6 to 1.1 | 88 |
Area per person (m²)
Common planning rules of thumb, not an official standard. Tighter figures than the usual range raise a warning on the result. Aisles and circulation are already part of these figures.
Capacity = whole number of times the area per person fits in the usable area (room area minus the area to subtract). It does not know your exits, doors, fire rules or local regulations. Nothing you type leaves your browser.
How it works
- Pick the layout and the unit, then enter the length and width of the room, or its area if you know it.
- Enter the area to subtract for a stage, a bar or fixed furniture, or leave 0.
- Read the number of people, then compare the other layouts in the table.
- Change the area per person of any layout if your chairs, tables or crowd are different. A warning appears if you go below the usual range.
What people use it for
Choosing a room for an event
Check whether a hall can take your guests as a lecture, a dinner or a standing reception before you visit it.
Comparing layouts of the same room
See how many fewer people a banquet takes than a theatre layout in the same space.
A first sizing for a class or a meeting
Get a quick count for tables and chairs before drawing a seating plan.
Questions
- How is the capacity calculated?
- Usable area = room area − area to subtract. Capacity = the whole number of times the area per person fits in the usable area. A 10 × 8 m room has 80 m²; with 0.7 m² per person in theatre layout, 80 ÷ 0.7 = 114.28, so 114 people.
- Is this the legal capacity of the room?
- No. The permitted number of people in a room depends on its exits, the width of its doors and stairs, fire rules and the limits set for the venue, and these differ by country and by town. This page only divides an area by an area per person. Check your local regulations and ask the venue or the fire authority for the real limit.
- Where do the default areas per person come from?
- They are common planning rules of thumb, not an official standard: about 0.7 m² (7.5 ft²) in theatre layout, 1.6 m² (17 ft²) in classroom layout, 1.5 m² (16 ft²) at banquet round tables, 0.5 m² (5.5 ft²) for a standing crowd and 0.9 m² (10 ft²) for a cocktail reception. Each layout shows its usual range, and the page warns you when you enter a tighter figure.
- What does the area to subtract do?
- It removes space that nobody will occupy, such as a stage, a bar, a buffet or fixed furniture. Aisles and circulation space are already part of the area per person, so do not subtract them twice.