Guest Seating & Venue Size Calculator
Plan the room, not just the guest list — count the tables, chairs and floor space.
Work out how many tables, chairs and tablecloths you need — and how big a venue to book — for a seated banquet, a standing cocktail event or theatre-style seating. Enter your guest count and seats per table, pick the format, and see the floor area to look for before you sign a venue contract.
Rule-of-thumb planning figures for tables, chairs, linens and floor space — a starting guide only. Always confirm the venue's fire-safety capacity.
How the tables and venue size are worked out
Tables first, then floor space
The number of tables is simple arithmetic: tables = guests ÷ seats per table, rounded up. At 10 per table, 100 guests fill exactly 10 tables; at 8 per table you'd need 13 (100 ÷ 8 = 12.5). Seats per table depends on the table size — a 1.5 m round comfortably seats 8 and a 1.8 m round seats 10. Floor space is set by the format: seated dining needs about 1.2 m² per guest, a full reception with a dancefloor and bar about 1.6 m² per guest, a standing cocktail event about 0.8 m² per guest, and theatre-style seating about 0.9 m² per guest. On top of the tables themselves, leave at least 1 m between tables so guests and staff can move.
Worked example
100 guests at 10 per table = 10 tables. For a full seated reception at ~1.6 m² per guest that's about 160 m² of floor to look for; run the same 100 guests as a standing cocktail event at ~0.8 m² per guest and you only need about 80 m². You'll also order about 100 chairs and 10 tablecloths, plus a dancefloor of roughly 25 m² if you're dancing.
Always confirm the venue's fire-safety capacity. These are planning rules of thumb; the legal maximum for a room is set by its exits and fire rating, not by floor area alone. Check the venue's stated capacity for your layout before you book, and leave clear paths to every exit.
Why the format changes the space so much
The same guest list can need double the floor area depending on how they're seated. These are the typical space-per-guest allowances used by venues and caterers:
- Seated dining — ~1.2 m² per guest. Round tables, chairs and room to serve, without a dancefloor.
- Full reception with dancefloor & bar — ~1.6 m² per guest. The wedding-style figure: tables plus a dancefloor, bar, cake and gift tables. Use this for a sit-down wedding.
- Standing cocktail — ~0.8 m² per guest. No dining chairs, just a few high tables and lounges, so people pack in closer.
- Theatre / ceremony — ~0.9 m² per guest. Rows of chairs facing the front for a ceremony or presentation, with aisles.
Whichever format you pick, leave at least 1 m between tables for guests and serving staff, and a wider path on the main aisle and around the dancefloor. Over-packing a room is the most common way an event feels cramped — err on the side of a slightly larger venue.
Chairs, tablecloths and how big a dancefloor
Chairs and tablecloths to order
Your rental order follows straight from the tables: one chair per guest (plus a few spares) and one tablecloth per table, sized to the table. A 1.5 m round usually takes a 2.7 m (108") round cloth for a floor-length drop; a 1.8 m round takes a 3.0 m (120") cloth. Add cloths for the cake, gift, guestbook and any grazing tables, and napkins to match the guest count.
How big a dancefloor
Allow about 0.4–0.5 m² per dancing guest and assume 30–40% of guests dance at once. For 100 guests that’s roughly 15–20 m² — a floor around 4 m × 4 m. That dancefloor is already inside the ~1.6 m² per guest full-reception allowance, so don't add it twice. Position it central or to one side of the room so no table is too far from the action.
Seats per table: 8 vs 10
Ten guests on a 1.8 m round means fewer tables and a shorter table count to dress, but a little less elbow room; eight on a 1.5 m round feels roomier and easier to talk across, at the cost of more tables, more cloths and more floor space. Match the seats to your table hire so no one is squeezed.
❓ Frequently asked Frequently asked questions
How many tables for 100 guests?
Divide the guest count by the seats per table and round up. At 10 per table, 100 guests need 10 tables; at 8 per table you'd need 13 tables (100 ÷ 8 = 12.5, rounded up). A 1.5 m round comfortably seats 8 and a 1.8 m round seats 10, so choosing bigger rounds means fewer tables. Add a separate head or bridal table if the hosts sit apart from the main floor.
How big a venue do I need?
It depends on the format. Seated dining needs about 1.2 m² per guest; a full sit-down reception with a dancefloor and bar closer to 1.6 m² per guest; a standing cocktail event about 0.8 m² per guest; and theatre-style seating about 0.9 m² per guest. For 100 guests that's roughly 120–160 m² seated or about 80 m² for a cocktail party. Always confirm the venue's fire-safety (maximum) capacity before you book.
How much space per guest for a wedding?
Plan on about 1.5–1.6 m² per guest for a seated wedding reception once you allow for the dancefloor, bar, cake table and gift table — so roughly 150–160 m² for 100 guests. Leave at least 1 m between tables so guests and staff can move around, and a little more along the main aisle and near the dancefloor.
How many people fit at a round table?
A 1.5 m (5 ft) round comfortably seats 8; a 1.8 m (6 ft) round seats 10; a 2.0 m round can take 12 at a squeeze. Long trestle or banquet tables seat about one guest per 60 cm of usable edge. Ten per table gives fewer tables and slightly more elbow room than eight, so it's the common choice for weddings.
How much space for a dancefloor?
Allow roughly 0.4–0.5 m² per dancing guest and assume 30–40% of guests dance at once — so about 15–20 m² for 100 guests, which is a floor around 5 m × 5 m. That dancefloor space is already included in the ~1.6 m² per guest full-reception figure, so you don't need to add it a second time on top.
Where these figures come from
The figures here are the mainstream event-planning and venue-hire rules of thumb used by caterers, function centres and wedding planners — not a legal standard. The one hard rule is the venue's own fire-safety capacity, which is set by its exits and building certification and always takes priority.
- Tables — tables = guests ÷ seats per table, rounded up; a 1.5 m round seats 8, a 1.8 m round seats 10, a 2.0 m round up to 12.
- Space per guest — seated dining ~1.2 m², full reception with dancefloor and bar ~1.6 m², standing cocktail ~0.8 m², theatre/ceremony ~0.9 m²; leave ≥1 m between tables.
- Dancefloor — ~0.4–0.5 m² per dancing guest, assuming 30–40% dance at once (already counted in the ~1.6 m² reception figure).
- Rentals — one chair per guest plus spares, one tablecloth per table, plus cloths for cake, gift and grazing tables.
Last checked: July 2026. This is a planning estimate, not a venue guarantee. Table sizes, chair styles and room shapes vary, so confirm dimensions with your venue and hire company — and always work within the venue's stated fire-safety capacity for your chosen layout.
Select the question that matches where you are right now.
The headline number is the tables you need for your guest count and seats per table. The breakdown turns that into the chairs and tablecloths to order and the venue floor area to look for in your chosen format.
Take the table count to your hire company, the floor area to your venue shortlist, and the chair and linen figures to your rental order. Treat them as a starting point and confirm exact dimensions before you book.
It's not the legal capacity of a room. That's set by the venue's exits and fire certification, and it can be lower than the floor-area figure suggests. Always work to the venue's stated maximum.
The same 100 guests need about 160 m² seated but only about 80 m² standing. Choosing a cocktail format instead of a sit-down dinner can halve the venue size you need.
Four things move the tables and venue size the most: guest count, seats per table, the layout format and whether you have a dancefloor.
Tables round up from guests ÷ seats per table, so 8 versus 10 per table changes the table count and everything you dress. More per table means fewer tables but tighter seating.
Seated (~1.2 m²), full reception (~1.6 m²), cocktail (~0.8 m²) or theatre (~0.9 m²) per guest — the format can nearly double the floor area for the same guest list.
A dancefloor adds ~0.5 m² per dancer, aisles and gaps between tables eat space, and a separate head or bridal table changes how the main floor lays out. Build in at least 1 m between tables.
A few habits keep the plan realistic and the room comfortable.
Over-packing is the classic mistake. If a venue is between your seated and cocktail figures, size up — guests remember a cramped room more than a slightly empty corner.
Ask the venue for its certified capacity for your exact layout, not just the floor area. Exits and fire rating set the legal maximum.
Match seats per table to the tables your venue or hire company actually stocks — a 1.5 m round is an 8, a 1.8 m round a 10. Don't seat 10 on a 5-footer.
Seating is one line in the event budget. Model the wider cost and how it fits your savings and monthly outgoings.