Portable Toilet Calculator

Determining the number of construction site portable toilets depends on workforce size, shifts, and the Florida Administrative Code.

The Florida Administrative Code and Princess Portable Toilets recommend 1 toilet for 1–10 workers for a 40-hour workweek. Since construction sites typically have a mixed-gender workforce, the total number of portable toilets should be doubled to accommodate both sexes. Use our portable toilet calculator to estimate how many portable toilets you may need, then reach out to Princess Portable Toilets to find the best construction site sanitation solution for your project.

Work shifts significantly affect the number of portable toilets needed on construction sites. Because OSHA and Florida Administrative Code requirements are based on a standard 40-hour workweek, multiple shifts increase restroom use as more workers share the same facilities throughout the day. Longer workdays also raise demand—sites operating 12-hour shifts typically need 25 to 50 percent more portable toilets.

To maintain hygiene and comply with regulations, portable toilet capacity should scale with the number of shifts. For instance, if a single-shift site requires four portable restrooms, a two-shift operation should provide eight. This approach minimizes wait times, prevents overcrowding, and ensures sanitary conditions across all working hours.

Determining the number of event porta potty rentals depends on the number of attendees and the event’s duration. A general rule is to have at least one porta potty for every 25 people for events lasting up to four hours.

If the event is longer than that, additional porta potties are necessary to accommodate increased usage and prevent long lines. Larger crowds or high-traffic events, such as festivals or concerts, may require even more porta potties to maintain cleanliness and convenience. Use our portable toilet calculator to estimate how many porta potties you may need, then reach out to Princess Portable Toilets to find the best portable sanitation for your event.

Alcohol increases porta potty demand because it makes people urinate more often, and events with alcohol tend to last longer. To prevent long lines and sanitation issues, experts recommend providing at least 20% more units when alcohol is served. Try our portable toilet calculator to see how alcohol affects your porta potty count.

Portable Toilet Calculator