Take your expected guest count and add a 10% margin. Take the layout into account: theatre style needs less space than a dinner with round tables. A venue that's exactly big enough often feels too tight.
More capacity tips in our article on finding an event venue.
🧮 Calculate instantly what your event needs
Use the Live Impact Event Oracle and see in one click how many m², drinks, bars, staff and toilets your situation needs, tailored to event type, group size, age and gender split.