Classroom Seating Calculator
How many desks fit a room safely.
Reviewed by James Whitfield · How we check our maths
Your values
ⓘ Live results
Results
- Students that fit
- 22
- Room area
- 63 m²
- Usable area
- 47.3 m²
- Area per student
- 2.1 m²
Quick answer
Classroom capacity is usable floor area divided by the space each student needs.
The formula
Capacity = area × (1 − circulation) ÷ space per student
Worked example
Worked example
Using the values the calculator loads with.
Inputs
- Room length9 m
- Room width7 m
- Space per student2.1 m²
- Circulation allowance25 %
Result
- Students that fit22
- Room area63 m²
- Usable area47.3 m²
- Area per student2.1 m²
How to use the Classroom Seating Calculator
- 1Measure the room length and width.
- 2Set the space each student needs.
- 3Allow for teacher circulation and exits.
Frequently asked questions
What is a normal space per student?
About 2 m² for secondary desks, more for practical rooms.
Does this meet fire rules?
Check local regulations — this is a planning estimate only.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error