HOW MANY RESTROOMS DO I NEED?

Portable Toilet Rental Calculator

Planning a special event or managing a job site? Use Global Sanitation Services’ portable restroom calculator to estimate how many units you’ll need for guest or crew comfort while meeting applicable OSHA sanitation guidelines.

Simply enter your event or project details below to receive a recommendation. Then, request a customized quote from our sanitation specialists. From delivery and setup to servicing and removal, our team is ready to support your portable sanitation needs.

Planning to serve alcohol? Consider increasing the recommended number of portable toilets by 15–20% to accommodate higher restroom usage.

Need a more comfortable, upscale option? Explore our available restroom trailers.

  1. 1 Calculate
  2. 2 Your Details
Plan with confidence

How Many Portable Toilets Do You Need?

Choose your project type and enter a few details for an instant planning estimate.

guests
hours
Estimated total 3 portable toilet units
Standard units 2
Accessible units 1

Based on the PSAI event planning chart. The accessible unit is included in the estimated total.

For multi-day events or custom service schedules, let our team confirm the final quantity.

How Many Porta Potties Do I Need for My Job Site?

The number of portable toilets required depends on the size of your crew and the applicable OSHA sanitation guidelines. Use the Global Sanitation Services portable restroom calculator to estimate the appropriate number of units needed to support worker comfort and job-site compliance.

How Many Porta Potties Do I Need for an Event?

For an event lasting up to four hours, a common recommendation is at least one portable toilet for every 50 guests. Event length, alcohol service and other factors may increase the number required. Use our calculator for a personalized estimate, then contact Global Sanitation Services for a customized quote.

Factors to Consider When Renting Portable Restrooms

Several details can affect the number and type of portable sanitation units your job site or event may require.

OSHA guidelines

  • 1–20 workers: Provide at least one portable toilet.
  • 20–190 workers: Provide at least one toilet seat and one urinal for every 40 workers.
  • 200 or more workers: Provide one toilet seat and one urinal for every 50 workers.

Event length: Multi-day events may require additional portable toilets, scheduled cleaning or more frequent servicing.

Number of attendees: Larger crowds require more units and careful placement. Restrooms should be easy to locate, free from obstructions and conveniently positioned near high-traffic areas, entrances and exits.

ADA accessibility: Plan for at least one ADA-compliant portable restroom for every 20 standard units, or approximately 5% of the total. Accessible units should be placed on level ground with a clear route free of curbs, steps and other barriers.

Alcohol service: Restroom usage typically increases when alcohol is served. Consider adding 10–20% more portable toilets to your estimated total.

Additional amenities: Handwashing stations and upscale restroom trailers can improve cleanliness, convenience and the overall guest experience.

Whether you’re coordinating a construction project or organizing a large outdoor gathering, the Global Sanitation Services portable restroom calculator can help you estimate the appropriate number of units for your crew or guests. Complete the calculator and request a personalized quote to get started.

Frequently Asked Questions About Portable Restroom Rentals

Yes. Global Sanitation Services offers ADA-compliant portable restrooms designed to meet federal accessibility standards. These spacious units include supportive handrails and sufficient interior room for wheelchair access and maneuverability.

Standard portable toilets are individual, self-contained units that typically do not include flushing systems. Restroom trailers provide a more comfortable, upscale experience with private stalls, flushing toilets, interior lighting, climate control, porcelain sinks, and hot and cold running water. They are an excellent choice for special events, long-term projects and construction-site rest areas.

Yes. We offer standalone handwashing stations that can be conveniently positioned throughout your event or job site. They are especially beneficial near dining areas, food-service stations, entrances and other high-traffic locations.

Service frequency depends on the number of users, rental duration and site conditions. For longer rentals or heavily attended events, more frequent servicing may be recommended to keep units clean, stocked and ready for use.

Portable restrooms should be installed on firm, level and accessible ground. Choose convenient locations near high-traffic areas while keeping entrances clear of vehicles, equipment and other obstructions. Our team can help determine suitable placement for delivery and servicing.