Toilet Hire Calculator — Portable Toilet Requirements

As a rough guide, allow around 1 standard unit per 100 guests for events up to about 6 hours. For longer events, or whenever food and alcohol are served, increase to roughly 1 unit per 75 guests. Festival-density crowds may need 1 per 50. Always include at least 1 accessible unit and adequate hand washing facilities.

Yes. UK toilet-hire firms recommend adding roughly 15–20% extra capacity when alcohol is served (this calculator uses +20%). Events with free-flowing drinks or an open bar should size up accordingly, as peak usage often follows drinks service.

Yes. The Equality Act requires adequate accessible facilities at events open to the public. The industry rule of thumb is 1 accessible unit per 200 guests, or 1 per 10 standard units, whichever is greater, with a minimum of 1. These are also useful for guests with pushchairs or young children.

For events up to 4 hours, pre-event stocking is usually sufficient. For 4-8 hour events, one mid-event service is recommended. Full-day or multi-day events need servicing every 6 hours. More frequent servicing is needed when alcohol is served.

Luxury trailer units offer a better experience with flushing toilets, hand basins, and lighting. They are popular for weddings, corporate events, and premium parties. Consider replacing every third standard unit with a luxury unit if budget allows.