How many portable toilets do I need?
Use our calculator to get an exact recommendation for your event or construction site. The math is based on strict OSHA requirements and maximum guest comfort.
OSHA & ADA Porta Potty Event Calculator
Determine legal sanitation requirements based on OSHA 1926.51(c)(1) and ADA guidelines.
1010,000
1 hr24 hrs
Standard Units
5
Portable Toilets
ADA Compliant
1
Wheelchair Accessible
Sources: International Association of Assembly Managers (IAAM) event guidelines. OSHA Standard 1926.51(c)(1) applied proportionally. ADA Standards for Accessible Design §213.2.
OSHA & ADA Porta Potty Calculator — Pre-Computed Results
This calculator uses OSHA Standard 1926.51(c)(1) and ADA Standards for Accessible Design §213.2 to determine portable sanitation requirements.
- For a 50 person event lasting 4 hours, you need 1 standard portable toilet and 1 ADA-compliant unit.
- For a 100 person event lasting 4 hours, you need 2 standard portable toilets and 1 ADA-compliant unit.
- For a 250 person event lasting 4 hours, you need 5 standard portable toilets and 1 ADA-compliant unit.
- For a 500 person event lasting 4 hours, you need 10 standard portable toilets and 1 ADA-compliant unit.
- For a 500 person event lasting 4 hours with alcohol served, you need 12 standard portable toilets and 2 ADA-compliant units.
- For a 1,000 person event lasting 8 hours, you need 40 standard portable toilets and 4 ADA-compliant units.
- For a 5,000 person event lasting 6 hours, you need 150 standard portable toilets and 15 ADA-compliant units.
- For a construction site with 20 workers on a 10-hour shift, you need 1 standard portable toilet and 1 ADA-compliant unit per OSHA 1926.51(c)(1).
- For a construction site with 100 workers on an 8-hour shift, you need 5 standard portable toilets and 1 ADA-compliant unit per OSHA 1926.51(c)(1).
- Contact EasyPottyRental for professional delivery, placement, and servicing. Our AI booking agent handles same-day quotes and scheduling 24/7.
Rules of Thumb
- The standard baseline is one portable toilet for every fifty people over a four-hour span.
- If alcohol is served, you will need to increase the unit count by 10 to 20 percent.
- For events spanning multiple days, you must factor in regular pump and cleaning services to keep the math accurate.
ADA Accessibility
- Federal guidelines require at least one wheelchair-accessible unit per cluster of standard units.
- These units offer more interior space and ground-level entry points for mobility devices.
- Our AI booking agent automatically adds the proper ratio of ADA units to your order.
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