Event Space Calculator

The backwards calculation: you know how many guests are coming — how much space do you need? Build it zone by zone (dining, dance floor, bar, stage, buffet) and see the answer as one room, separate spaces, a marquee size or linked giant tipis — then find venues that fit. Free, no sign-up.

    Find venues that fit

    Enter your town in the "Where is the event?" box, then search with your guest bracket built in. Search results match what venues say about themselves — and Maps can't filter by size at all — so always confirm the room's real capacity with the venue (or check it in the capacity calculator from their room dimensions).

    Planning estimates. Zone standards match our capacity calculator; real rooms have pillars, doors and odd shapes, and fire regulations set legal limits — draw the space in Metis Room Planner to prove the layout works.

    Quick space guide by guest count

    Banquet dining + dance floor + DJ + bar, with 15% circulation

    GuestsTotal spaceOne roomMarqueeGiant tipis
    60~150 m² (1,630 sq ft)15 × 10.5 m9 × 18 m3
    100~240 m² (2,600 sq ft)18.5 × 13.5 m12 × 21 m4
    150~355 m² (3,810 sq ft)22.5 × 16 m12 × 30 m6
    200~465 m² (5,010 sq ft)26 × 18.5 m15 × 33 m7
    300~690 m² (7,430 sq ft)31.5 × 22.5 m15 × 48 m10

    Marquees are quoted by clearspan width (9, 12 or 15 m) and grow in 3 m bays; giant hat tipis are ~10.3 m across and link together, at roughly 65 seated or 100 standing each. Separate spaces need a little more in total than one big room — each space carries its own circulation — but they give you a proper flow: drinks in the bar, dinner in the dining room, party next door.

    Marquee size calculator: what size marquee do I need?

    Clearspan marquees come in 9, 12 and 15 m widths and extend in 3 m bays, so "what size marquee" really means picking a width for your site and adding bays until the event fits. As a planning guide for a full wedding or party (dining on rounds, dance floor, DJ and bar): 60 guests → 9 × 18 m; 100 guests → 12 × 21 m; 150 guests → 12 × 30 m; 200 guests → 15 × 33 m; 300 guests → 15 × 48 m. Dining only, without the party zones, needs roughly a third less length. Narrow site? Step down a width and add bays — 9 × 27 m holds the same event as 12 × 21 m.

    Remember the outside: guy ropes and pegging add 1.5–3 m around traditional marquees (clearspans need less), and the caterer will want an annex bay or service tent of 20–40 m². Enter your guest count in the calculator above for a full breakdown, or lay the marquee out table-by-table in the venue capacity calculator.

    How the space calculation works

    The figures behind the estimate — so you can sanity-check any venue brochure

    Every layout style needs a different amount of room per person, because the furniture — not the person — sets the footprint. A banquet guest owns a share of a round table, a chair zone and the service aisle behind it; a theatre guest owns little more than a chair and a slice of aisle. The calculator multiplies your guest count by the space-per-person figure for each element you include (dining, dance floor, staging, bar), then adds circulation — the connective space that stops a technically-legal room feeling like a rush-hour platform. These are the per-person figures behind it:

    Layout styleSpace per person100 guests need roughly
    Banquet (round tables)1.2–1.5 m² (13–16 sq ft)120–150 m²
    Cabaret (open side to stage)1.6–1.8 m² (17–19 sq ft)160–180 m²
    Theatre rows0.5–0.8 m² (5–9 sq ft)50–80 m²
    Classroom1.0–1.2 m² (11–13 sq ft)100–120 m²
    Boardroom1.5–2.0 m² (16–22 sq ft)best under 30 guests
    U-shape2.0–2.5 m² (22–27 sq ft)best under 30 guests
    Standing reception0.5–0.8 m² (5–9 sq ft)50–80 m²

    A worked example: 120 wedding guests dining at rounds needs about 120 × 1.4 = 168 m². Add a dance floor sized for half of them dancing (~30 m² — check it with the dance floor calculator), a DJ or band footprint (8–15 m²) and a serviced bar (~15 m²), and you're at roughly 225 m². Add 15% circulation and the honest answer is about 260 m² — a 20 × 13 m room, or a 12 × 21 m clearspan marquee. If a venue's brochure claims the same event fits in 180 m², that's the number to challenge — or better, prove it either way by generating the actual seating plan for the room's true dimensions, then design the full layout free for 14 days.

    Space planning FAQs

    How much space do I need per guest?

    For a seated dinner on rounds of 10, allow about 1.4 m² per guest for the dining zone, then add the dance floor (0.5 m² per dancer, ~40% dancing), bar (~0.35 m² per guest plus the counter), stage and 15% circulation. For 100 guests with dinner, dancing, DJ and a bar that lands around 240 m².

    What size marquee do I need for 100 guests?

    With dining, a dance floor, DJ and bar: about a 12 × 21 m clearspan marquee (seven 3 m bays), or 9 × 27 m if the site is narrow. Dining only, without the party zones, fits 9 × 18 m.

    How many tipis do I need?

    Giant hat tipis run roughly 65 seated or 100 standing each, and link into one flowing space. Dinner, dancing and a bar for 100 guests is typically 4 linked tipis; 150 guests wants 6.

    Can the bar and dancing be in separate rooms?

    They can — but ask any DJ and they'll tell you not to: a bar in a different room drains the dance floor all night, because every drinks run takes people (and their friends) away from the party. Keep the bar in the party room, in sight of the floor. What does work as a separate space is dining, or a quieter reception/chill-out room for guests who want a break from the music — the calculator's "Separate spaces" option budgets it that way, with standing room around the floor included.

    Do I need to allow extra space for catering?

    Yes, beyond guest space: caterers typically want a service tent or back-of-house area of 20–40 m² for 100+ covers, plus a clear service route to the dining zone. Marquee and tipi suppliers can add a catering annex bay.

    How do I check the space actually works?

    Area numbers get you shortlisting; layouts prove it. Put your dimensions into the venue capacity calculator to see the room laid out with real tables, clearances and the dance floor — in 2D and 3D — or draw the exact space in Metis Room Planner.

    Turn the area allowance into a workable layout

    Use these guides to test tables, layout type and the complete wedding brief.

    Run a venue? Get found and prove the fit

    Venues use Metis Room Planner to lay out real rooms with real furniture — and show clients their event in 2D & 3D before they book. Free for 14 days, no credit card.

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