Calculator

How many tables do I need?

Enter your guest count and table size to see how many tables to book — or enter the tables you have to see how many guests go at each.

Tables-needed calculator

13guest tables· plus the head table106 seats in total · 6 empty seats

Already know how many tables? Guests per table:

8.3 guests per table on average9 at the fullest table

Seat counts only — check your venue’s real table sizes.

How the calculation works

The calculator takes your guest count, subtracts the people at the head or sweetheart table, adds the spare seats you want to keep free, and divides by the seats per table — always rounding up, because you can’t book part of a table.

For example, 100 guests with a sweetheart table for 2, two spare seats, and tables of 8: (100 − 2 + 2) ÷ 8 = 12.5, so you need 13 tables plus the sweetheart table.

The second calculation works the other way. If your venue has a fixed number of tables, it divides your guests across them so you can see whether tables will be comfortable or tight.

How many people fit at a table?

Table capacity depends on the table’s size and on how much space each place setting needs. These are typical figures used by venues and hire companies; always confirm with yours.

TableComfortableMaximum
48 in (122 cm) round68
60 in (152 cm) round810
72 in (183 cm) round1012
6 ft (183 cm) rectangle68 (with ends)
8 ft (244 cm) rectangle810 (with ends)

"Comfortable" leaves room for centrepieces, sharing plates and chair backs. "Maximum" works for buffet-style service or short receptions, but looks crowded in photographs.

Quick reference

GuestsTables of 8Tables of 10Tables of 12
40544
60865
801087
10013109
150191513
200252017

This table counts every guest at a guest table. Subtract your head table first if it is separate.

Should I book extra tables?

A small buffer is sensible. Late RSVPs, a plus-one confirmed at the last minute, or a vendor who needs a meal can all add people after you have finalised numbers. Keeping two or three seats free across the room is usually enough; a whole spare table is only worth it if the venue doesn’t charge for it, or if your guest list is still very uncertain.

Mixing table sizes

Many venues have more than one size. Mixing them can solve awkward numbers — 92 guests fit neatly at seven tables of 12 and one of 8, for instance — and lets you put large families together without splitting them. In the SeatFinch planner each table has its own capacity, so you can model exactly the mix your venue offers and the auto-seater will respect it.

Next steps

Once you know your table count, sketch the room on the wedding table plan page, pick a round or rectangular layout, and download a blank seating chart template if you want to fill one in by hand.

Know your tables? Set them up and auto-seat your guests.

Start planning free

Related guides: head table vs sweetheart table and planning a kids’ table.

Last updated 2026-11-02

Questions, answered

How many tables do I need for 100 guests?

With tables of 8 you need 13; with tables of 10 you need 10; with tables of 12 you need 9. Add a head or sweetheart table separately if you are having one.

How many guests should sit at a round table?

Eight at a 60-inch round and ten at a 72-inch round are the usual comfortable numbers.

Does the head table count?

Enter the head-table seats in the calculator and it will subtract them from the guest tables and add the head table separately.

What if my numbers don’t divide evenly?

The calculator rounds up. The leftover seats show as empty seats — keep them as your buffer, or use a smaller table for the overflow.

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