How Big a Marquee Do I Need?
Marquee sizes for every guest count, with space allowances for dining, dancing, bars and everything in between.
The Basic Formula
For a seated meal with round tables, allow 1 sqm per guest (roughly 10 sq ft). That accounts for the table, the chair and enough room for people to sit down and get up without bumping into the table behind them.
For a standing reception or drinks party, allow 0.5–0.7 sqm per guest. People cluster, move around and don't need as much personal space when they're on their feet.
These are minimums. Every supplier will tell you to round up. A marquee that's 10% too big feels airy and comfortable. One that's 10% too small feels packed, and there's nothing you can do about it on the day.
Marquee sizes by guest count
These assume seated dinner with round tables of 8–10. Sizes are standard marquee widths — your supplier will have these in stock.
50 guests
Dining only
6m x 9m (54 sqm)
+ Dance floor
6m x 12m (72 sqm)
The most common size for garden parties and smaller weddings. A 6m-wide marquee fits comfortably in most medium gardens. Five round tables of 10, or six tables of 8.
80 guests
Dining only
9m x 12m (108 sqm)
+ Dance floor
9m x 15m (135 sqm)
Moving up to 9m width gives enough room for eight tables of 10 and a proper aisle between them. The 12m length is manageable for most private land.
100 guests
Dining only
9m x 15m (135 sqm)
+ Dance floor
12m x 15m (180 sqm)
The classic wedding size. Ten tables of 10, head table, and a dance floor. At 12m width, the marquee starts to feel like a proper event space rather than a tent.
150 guests
Dining only
12m x 18m (216 sqm)
+ Dance floor
15m x 18m (270 sqm)
A serious installation. Delivery and setup take a full day. You'll need a site with good vehicle access. The internal space is large enough for separate dining and dancing zones without dividers.
200 guests
Dining only
15m x 18m (270 sqm)
+ Dance floor
15m x 21m (315 sqm)
At this scale, you're looking at clearspan or frame marquees — traditional pole marquees struggle at these widths. Budget for a generator rather than relying on domestic power.
Space you forget to account for
Guest seating is only part of the footprint. These extras eat into your floor area fast.
| Feature | Space needed |
|---|---|
| Dance floor (100 guests) | 25 sqm (5m x 5m) |
| Bar area | 12–18 sqm (3m x 6m) |
| Catering / kitchen | 12–20 sqm (3m x 4m min) |
| Band or DJ | 9–12 sqm (3m x 3m) |
| Head table | 6–10 sqm |
| Entrance / lobby | 6–9 sqm |
Layout tips that save space
- Long trestle tables seat more people per square metre than round tables. If space is tight, banquet-style seating gets you 15-20% more capacity.
- Put the bar and dance floor at one end. Guests naturally flow towards the action, leaving the dining area quieter for those who want to sit and talk.
- If your caterer can work from a separate tent or the house kitchen, that frees up 12-20 sqm inside the main marquee.
- A pagoda or small attached marquee for the bar saves internal space and creates a natural separation between drinking and dining.
- Ask your supplier for a floor plan. They draw these for every event and can show you exactly how your layout works at different sizes.
Ground space vs marquee size
The marquee footprint isn't the same as the ground you need. Traditional pole marquees require 1–2m extra on each side for guy ropes and stakes. Clearspan (frame) marquees sit flat on their own footprint with no guy ropes — better if your space is tight.
You also need room for delivery vehicles, a loading area behind the catering tent, and walkways around the marquee. As a rule, the total ground area should be at least 30% larger than the marquee itself.
Common Questions
What if my guest count changes after booking?
Most suppliers can adjust the marquee size up to a few months before the event, subject to availability. Going up a size (e.g., 9m x 12m to 9m x 15m) is usually a 3m extension added to the length. Going down is harder — check the supplier's cancellation terms.
Can I mix seated and standing areas?
Common at weddings: seated dinner for the full guest list, then clear some tables and open up a dance floor for the evening. Some guests leave, evening guests arrive. Your supplier can help plan a layout that works for both phases.
Is a round or long table layout better?
Round tables (8-10 per table) are more sociable and look good in photos. Long trestle tables fit more people per sqm and create a banquet atmosphere. Many weddings mix both — a long head table for the wedding party, rounds for everyone else.
How do I measure my garden for a marquee?
Measure the longest and widest flat area. Subtract 2m from each edge for access and guy ropes (less for clearspan marquees). The remainder is your maximum marquee footprint. Take photos and measurements to your site visit — your supplier will confirm what fits.
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