Circus Tent Sizing Calculator

Tent capacity from ring size and seating configuration.

Ring diameter (m)

Rows of seating

Seat width (cm)

Number of aisles

Aisle width (m)

Tab to move between fields

Tent diameter (m)

Seating capacity

1,283

Tent diameter (ft)104.99

Floor area (m²)804.25

Floor area (ft²)8,656.84

Centre pole height (m)19.2

Fabric needed (m²)1,256.28

How to Use This Calculator

Enter the ring diameter (m) — standard circus ring is 13 m.
Set the number of seating rows and seat width per person (cm).
Enter the number of aisles dividing the seating sections.
Review Tent Diameter, Total Capacity (seats), Seating Area, and recommended Tent Height.
Use these dimensions when sourcing or designing your circus tent structure.

How the result changes with Rows of seating

Ring diameter (m): Standard circus ring is 13 m (42 ft). Enter the performance ring diameter.
Rows of seating: Number of concentric bench/bleacher rows surrounding the ring.
Seat width (cm): Width per person on the bench (50 cm is standard bench seating).
Number of aisles: Aisles that divide the seating sections for entry/exit.
Aisle width (m): Width of each aisle in metres (fire code minimum is usually 1.1 m).

Tent diameter (m): Required tent diameter in metres.
Tent diameter (ft): Required tent diameter in feet.
Floor area (m²): Total ground-level footprint of the tent.
Floor area (ft²): Total ground-level footprint in square feet.
Seating capacity: Total number of seats across all rows.
Centre pole height (m): Recommended centre pole height for a conical big-top.
Fabric needed (m²): Approximate tent fabric area (conical canopy).

Identify Input Parameters
4 parameters
Ring diameter (m) = 13, Rows of seating = 10, Seat width (cm) = 50, Number of aisles = 2 = 5 input(s) provided
Calculate Tent diameter
Tent diameter = tentRadius * 2
32 = 32
Calculate Seating capacity
1283 = 1283
Calculate Tent diameter
Tent diameter = tentRadius * 2
104.99 = 104.99
Calculate Floor area
Floor area = π * tentRadius * tentRadius
804.25 = 804.25