Classroom Capacity Calculator
Convert room dimensions or area into a realistic seating capacity using space-per-student assumptions.
Seating capacity
- 1.Area = 8 × 6 = 48 m²
- 2.Capacity = floor(48 ÷ 1.4) = 34
How capacity is calculated
Area ÷ space per student
Enter length × width (metres) or total area. Choose m² per student (default 1.4). Capacity is the integer floor of area ÷ space.
Dedicate circulation/teacher space by lowering usable area or raising m² per student.
Source
capacity = floor(area_m² ÷ m²_per_student). Common planning heuristics use ~1.2–1.5 m²/student for dense exam seating and higher for activity rooms. Not a fire-code certificate — verify against local building bye-laws.
Frequently asked questions
What m² per student should I use?
Dense exam halls often plan near 1.0–1.2 m²; regular classrooms 1.2–1.5+; labs need more. Check your affiliation/building norms.
Does RTE prescribe classroom size?
The Central RTE Schedule requires at least one classroom per teacher but does not set a national m² figure in the Schedule text used here.
Can I enter feet?
Convert to metres first (1 ft = 0.3048 m), or multiply length×width in metres.
Is furniture layout considered?
Only via the space-per-student assumption — not CAD layout.
For developers & AI agents
The Classroom Capacity Calculator is also available as a free, unauthenticated JSON API — no API key, no sign-up, CORS enabled for all origins. Send a GET request with the parameters below and receive the computed result as JSON, including the source of the format or formula used. Invalid input returns HTTP 400 with a JSON { "error": "..." } body.
GET https://knwdle.com/api/tools/classroom-capacity-calculator| Parameter | Required | Description |
|---|---|---|
areaSqM | No | Usable floor area in m² (or provide lengthM & widthM) |
lengthM | No | Room length in metres |
widthM | No | Room width in metres |
sqMPerStudent | No | Space per student in m² (default 1.4) |
Request:
GET https://knwdle.com/api/tools/classroom-capacity-calculator?lengthM=8&widthM=6&sqMPerStudent=1.4
Response:
{
"tool": "classroom-capacity-calculator",
"name": "Classroom Capacity Calculator",
"source": "capacity = floor(area_m² ÷ m²_per_student). Common planning heuristics use ~1.2–1.5 m²/student for dense exam seating and higher for activity rooms. Not a fire-code certificate — verify against local building bye-laws.",
"areaSqM": 48,
"sqMPerStudent": 1.4,
"capacity": 34,
"steps": [
"Area = 48 m²",
"Capacity = floor(48 ÷ 1.4) = 34 students"
]
}