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Round Table Seating Calculator

Enter guest count, table diameter and seat width to plan round-table seating.

Result

11
8
88
188.5 in

How it is calculated

Both table diameter and the width each guest needs are in inches. The width per seat defaults to 24 in if you leave it empty. The tool takes the table's edge length, circumference = π × diameter, and fits seats along it: seats per table = ⌊circumference ÷ width per seat⌋, rounded down and never below 1. Then tables = ⌈guests ÷ seats per table⌉, rounded up, and total capacity = tables × seats per table. All tables are treated as identical and full-sized, so a mixed layout, head table or rectangular tables is not modelled. Guests, diameter and seat width must be greater than zero.

Worked example

You have 85 guests, 60 in round tables, and allow 22 in per person. Circumference: π × 60 = 188.5 in. Seats per table: 188.5 ÷ 22 = 8.57, rounded down to 8. Tables: 85 ÷ 8 = 10.6, rounded up to 11. Total capacity: 11 × 8 = 88 seats, so there are 3 spare seats. With the default 24 in per person the same table seats only 7, and you would need 13 tables.

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Common mistakes

  • Entering the diameter in centimetres or feet. The tool reads inches, so a 150 cm table must be entered as about 59, and a 5 ft table as 60.
  • Using the seat width as if it were the chair width. It is the stretch of table edge each person gets, including elbow room, usually more than the chair itself.
  • Treating the spare seats as free to use. The result rounds tables up, and the last table may be nearly empty; check whether two smaller groups can share.
  • Forgetting that the tool does not count a head table, a stage, a dance floor or aisle space, which all reduce how many tables fit in the room.

About this calculator

Seats per table follow from the table's circumference: seats = floor(π × table diameter ÷ seat width), since each guest needs roughly a fixed linear width of table edge to sit comfortably (commonly 24 inches / 60 cm per person). Tables needed = ceil(total guest count ÷ seats per table), rounding up because a partial table still has to be set and staffed.

Wedding and event planners use this to figure out how many 60-inch or 72-inch round tables a venue needs for a given guest list, and caterers and venue coordinators use the same math to plan linens, place settings, and floor layout so the room doesn't run short — or end up with awkward half-empty tables.

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Comments (1)

  • Editorial team

    Table size changes the table count more than the guest list does. For 100 guests at 24 in per seat, a 60 in table seats 7 and needs 15 tables, with 105 seats in total, while a 72 in table seats 9 and needs 12 tables, with 108 seats. Leaving the per-seat width blank assumes 24 in. Measure your actual room before ordering. What table diameters does your venue stock?

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