How much floor space does each table need?

As a rule, allow at least 1.5 metres clearance between table edges for comfortable chair movement and service access. A 1.7m round table with 1.5m aisles needs roughly a 3.5m × 3.5m zone. For rectangular tables, allow the full table length plus aisle space on each side. This calculator uses your aisle width setting to compute room space automatically.

Should I use round or rectangular tables?

Round tables encourage conversation across the table and look elegant — they are the most popular choice for weddings and formal dinners. Rectangular tables fit more guests in the same floor area and suit narrower rooms. Long banquet tables create a communal, family-style atmosphere but require a large venue and longer service runs.

How big should my head table be?

Allow approximately 60 cm per seat along the front of the head table — an 8-person head table is about 4.8 m long, a 12-person table about 7.2 m. The head table is traditionally set on one side only so guests face the room. Consider a sweetheart table (just the couple) as a more modern, intimate alternative for weddings.

What if my guest count does not divide evenly across tables?

It rarely does. Having one or two fewer guests on some tables is perfectly normal and looks fine. Avoid any table with fewer than half its intended capacity — combine small groups at larger tables instead. Spread empty seats across tables rather than leaving one table noticeably sparse, as this draws attention to absent guests.

How many spare seats should I plan for?

Zero to two spare seats per table is ideal. Too few and you have no flexibility for last-minute changes; too many and tables look sparse. If you are expecting RSVPs to drift in late, plan for 5–10% more capacity than your confirmed guest count to absorb additions without reorganising the entire plan.

Seating Plan Calculator — Tables, Spare Seats & Room Layout

Calculate exactly how many tables you need, how many spare seats you will have, and get a room layout suggestion for your party or event.

Total Guests

Total number of people attending the event — use your confirmed RSVP count or best estimate if invitations are still outstanding

Table Shape

Choose the table shape for your venue — round tables suit formal events; rectangular and banquet tables fit more guests in a narrow space

Seats Per Table

Number of guests per standard table — 8 is the most common for round tables at UK weddings and parties; 6 for smaller tables; 10–12 for larger round tables

Include Head Table

A head table seats the wedding party, guests of honour, or hosts at the front of the room — enter the number of seats it will hold below if included

Head Table Size

Number of guests seated at the head table — these are subtracted from the regular guest count before calculating how many standard tables you need

How We Calculate This

The calculator separates the head table guests from the regular guest count before dividing into tables.

Table calculation

Regular guests = Total guests − Head table seats

Tables needed = Regular guests / Seats per table (rounded up)

Spare seats = Total seats − Total guests

Room space

Each table footprint = (Table length + aisle) × (Table width + aisle). Total room space = footprint × tables, plus the head table footprint if applicable.

Layout suggestion

The layout suggestion is based on the number of tables — from a single row for intimate gatherings to five or more rows for large venue events.

Frequently Asked Questions

Last updated: March 2026

All calculations are estimates. Adjust quantities based on your guests and event type.