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Customer Service: 1-800-499-5757

Portable Toilet Calculator

Restrooms needed for Construction Sites

# of Employees Minimum Number of Portable Restroom Facilities
1-10 1
11-20 2
21-30 3
31-40 4
Over 40 1 additional facility for each 10
additional employees

Under normal conditions most people will use sanitation facilities once every four hours.

Take into consideration that the consumption of food, liquids, beer, and other alcoholic beverages will increase usage by 30-40%. Use these tables as a guide – then give us a call. 1-800-499-5757

Restrooms needed for Events

How to use this chart:

1) Determine how many hours the event will last, if it is multiple days use the longest day.

2) Determine how many people will attend, if there are multiple days determine the peak day.

3) Use the chart to calculate the number of portable restrooms needed for adequate sanitation conditions.

  Length of Event in Hours *
Average Crowd Size 1 2 3 4 5 6 7 8 9 10
30 1 1 1 1 2 2 2 2 3 3
60 1 1 2 2 3 3 3 4 4 4
125 2 2 2 3 4 4 4 5 5 5
250 3 3 3 4 4 5 6 6 7 8
500 4 5 6 6 7 7 9 9 10 12
1000 6 8 8 8 9 9 11 12 13 13
2000 6 6 9 12 14 16 18 20 23 25
3000 7 9 12 16 20 24 26 30 34 38
4000 9 13 16 22 25 30 35 40 45 50
5000 12 15 20 25 31 38 44 50 56 63
10000 15 25 28 50 63 75 88 100 113 125
15000 20 38 56 75 94 113 131 150 169 188
20000 25 50 75 100 125 150 175 200 225 250
25000 38 69 99 130 160 191 221 252 282 313
30000 46 82 119 156 192 229 266 302 339 376

*Estimates based on:
One unit provides approximately 160 to 200 uses with 4 hours between uses and no pumping service is provided 50% mix of men and women

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