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Tent Size Calculator

A seated dinner at round tables needs 12 to 15 square feet per guest, long banquet tables need 10 to 12, and a standing reception needs about 8. Add a dance floor at 3 square feet for 40 percent of your guest list. For 100 guests at rounds that is 1,200 to 1,500 square feet, which a 40 x 40 tent covers.

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Your event

Rounds of 8 with chair push back room and walking aisles
Entertainment

Stations

Bars

Suggested for 100 guests: 2, one bar per 75.

Buffet tables, 8 ft
Cake, gift or card tables

Covered space you need

1,200 to 1,500

square feet

Tent sizes that cover it

Smallest stocked sizes that fit the requirement. Sized against the upper figure, so the tent still works when four more people arrive.

Space plan, 40 x 40 ft

Fits, with 100 sq ft to spare.

  • Seating1,500 sq ft
  • Free space100 sq ft

Drawn to scale from the figures above: each block is the area it needs. It shows whether it all fits, not where each table goes. Your tent supplier draws the final layout.

How that breaks down

Seating area1,200 to 1,500 sq ft
Tables13
Chairs100

Square feet per guest, by seating style

These are published industry densities, shown as ranges because that is how the sources give them. Averaging a range into one number invents a precision nobody has.

Seating styleSq ft per guestWhat that includes
Cocktail or standing8Standing room plus scattered highboy tables
Ceremony rows8 to 12Chairs in rows with a centre aisle and an altar zone
Seated, long banquet tables10 to 12Chairs both sides, guest aisles between rows
Seated, round tables12 to 15Rounds of 8 with chair push back room and walking aisles
Full reception15+Seated dinner plus dance floor, head table, buffet and bar
  • Dance floor: 3 square feet for 40 percent of the guest list. Not everyone dances at once.
  • Aisles: 4 feet for guest aisles, 6 to 8 feet wherever catering staff carry trays.

Tent size by guest count

The smallest stocked tent for each guest count, sized against the upper figure for the seating style so it still works when a few more people arrive. Guests and tables only: add a buffet, bars or a band in the calculator above.

GuestsCocktail or standingSeated, long banquet tablesSeated, round tablesRound tables and a dance floor
5020 x 20 ft (400 sq ft)20 x 30 ft (500 to 600 sq ft)20 x 40 ft (600 to 750 sq ft)30 x 30 ft (660 to 810 sq ft)
7520 x 30 ft (600 sq ft)30 x 30 ft (750 to 900 sq ft)20 x 60 ft (900 to 1,125 sq ft)30 x 45 ft (990 to 1,215 sq ft)
10020 x 40 ft (800 sq ft)20 x 60 ft (1,000 to 1,200 sq ft)40 x 40 ft (1,200 to 1,500 sq ft)30 x 60 ft (1,320 to 1,620 sq ft)
12520 x 60 ft (1,000 sq ft)40 x 40 ft (1,250 to 1,500 sq ft)40 x 60 ft (1,500 to 1,875 sq ft)40 x 60 ft (1,650 to 2,025 sq ft)
15020 x 60 ft (1,200 sq ft)30 x 60 ft (1,500 to 1,800 sq ft)40 x 60 ft (1,800 to 2,250 sq ft)40 x 80 ft (1,980 to 2,430 sq ft)
20040 x 40 ft (1,600 sq ft)40 x 60 ft (2,000 to 2,400 sq ft)40 x 80 ft (2,400 to 3,000 sq ft)Over 40 x 80: two tents or a structure (2,640 to 3,240 sq ft)

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Free to use on your own site, so customers get a straight answer before they call. Paste this where you want the tool to appear. It sizes itself to fit, and works in Wix, Squarespace, WordPress and plain HTML.

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Frequently asked questions

What size tent do I need for 50 guests?
For a seated dinner at round tables, 600 to 750 square feet, which a 20 x 40 tent covers. Long banquet tables bring that down to 500 to 600. A standing reception needs about 400. Add 60 square feet if you want a dance floor.
How many people fit in a 20x20 tent?
A 20 x 20 tent is 400 square feet. That seats roughly 26 to 33 guests at round tables, 33 to 40 at long banquet tables, or about 50 standing. Those figures assume no dance floor, buffet or bar inside the same tent.
How many tables fit under a 20x20 tent?
Four to five tables of 8 at 5 foot rounds, once you allow chair push back room and a walking aisle. Long 8 foot banquet tables pack tighter and fit roughly 30 to 40 percent more seats in the same footprint, which is the move when a layout almost fits.
How much tent space does a dance floor take?
Size the floor first: 40 percent of the guest list at 3 square feet each, so 120 square feet for 100 guests, laid as a 12 x 12 floor. This calculator adds that floor to the seating space under the tent. The dance floor size calculator works out the floor itself, panel by panel.
Does a bounce house go in the tent?
Usually not. Inflatables need their own clearance on all sides and enough overhead height, and they anchor to the ground, which a tent floor plan does not leave room for. Site the inflatable beside the tent on its own footprint and check the manufacturer's clearance.
What size tent do I need for 100 guests?
For a seated dinner at round tables, 1,200 to 1,500 square feet, which a 40 x 40 tent covers. Long banquet tables need 1,000 to 1,200, a 20 x 60, and a standing reception about 800, a 20 x 40. With a dance floor, round tables need 1,320 to 1,620 square feet, a 30 x 60.
What size tent do I need for 150 guests?
For a seated dinner at round tables, 1,800 to 2,250 square feet, which a 40 x 60 tent covers. Long banquet tables need 1,500 to 1,800, a 30 x 60, and a standing reception about 1,200, a 20 x 60. Add a dance floor and round tables need up to 2,430 square feet, a 40 x 80.

Sources

Forever Party Rentals, Event Spacing Guide, read 21 September 2026, for the per guest densities, the dance floor formula and the aisle widths. Corroborated by The Party Centre, which gives 10 square feet per person for a seated dinner and 6 to 8 for a standing event, and by Tent Explorer, which gives 6 to 15 by seating style. Tent sizes are the footprints party rental companies commonly stock. This is planning guidance, not an engineering calculation: your tent supplier sizes the actual install. MUNRO Enterprises, Tent Sizing Calculator, published 4 May 2026 and read 22 September 2026, for the allowances for a DJ or band, bars, buffet tables and cake or gift tables.

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