Sizing guide

How many porta potties do I need?

Start with 1 standard unit per 50 guests for a 4-hour event, a common industry guideline.

Pasadena Porta Potty Rentals

Small parties

50 guests? Usually one

50 guests need 1 unit for up to 4 hours, and 2 units for 6–8 hours.

Mid-size events

100 to 200 guests

100 guests: 2 units for 4 hours. 200 guests: 4 units for 4 hours, 6 for 8 hours.

Serving drinks?

Add 1 for every 4

With alcohol, add 1 unit for every 4 units, rounded up. 150 guests, 6 hours, bar: 5 units.

Food served?

Add hand washing

We recommend 1 hand washing station per 4 units when food is served.

Public events

Plan accessible units

At least 1 wheelchair-accessible unit per cluster and 5% of units accessible (2010 ADA Standards §213.2).

Work crews

1 per 10 workers

OSHA sets minimums. We recommend 1 standard unit per 10 workers on a 40-hour week, with weekly service.

Get the count right

Not sure? Ask us

In 174 calls we reviewed, about two-thirds of weekend-event callers needed just one unit.

Pasadena Porta Potty Rentals

Use the sizing guide