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Portable toilet calculator How many toilets do I need?

Pick your hire, add your numbers and get a starting figure based on the guidance event organisers and contractors work from.

You need around

0 toilets

    Get a quote for this

    Where the numbers come from

    The calculator uses published UK guidance. It gives you a sensible starting point, and we confirm the right mix with you.

    Events: the Purple Guide

    The Purple Guide is the UK guidance most event organisers and licensing teams work from. For a typical local event it suggests one toilet per 100 women, plus one toilet per 500 men and one urinal per 150 men.

    Events that run longer, serve alcohol or happen in hot weather need more, so the calculator adds a margin for those and we will advise on the rest.

    Building sites: HSE figures

    On sites, the Construction (Design and Management) Regulations 2015 require toilets and washing facilities, and HSE workplace guidance sets the minimum numbers by headcount.

    People at workToiletsWashbasins
    1 to 511
    6 to 2522
    26 to 5033
    51 to 7544
    76 to 10055

    For more than 100 people, talk to us and we will plan it with you.

    Accessible units

    For public events we recommend at least one accessible unit, and the calculator includes it. On sites, add one if anyone needs it.

    Hand washing

    Plan hand washing alongside every toilet block. On building sites, washbasins are required next to the toilets.

    Sources: The Purple Guide, HSE: how many toilets should a workplace have?, HSE: welfare on construction sites

    Questions about toilet numbers

    Anything else, send it with your quote request.

    How many portable toilets do I need per person at an event?

    For a typical local event, the Purple Guide suggests one toilet per 100 women, plus one toilet per 500 men and one urinal per 150 men. Longer events, hot weather and alcohol all increase that.

    How many toilets does a construction site need?

    HSE guidance asks for at least one toilet and washbasin for 1 to 5 people, two for 6 to 25, three for 26 to 50, four for 51 to 75 and five for 76 to 100.

    Do I need a separate accessible toilet?

    For public events we recommend at least one. On building sites, add one if anyone on site needs it.

    Is the calculator result a quote?

    No, it is a starting number based on published guidance. Send us your details and we will confirm the right mix and price.

    Get a quote

    Tell us where, when and roughly how many people. We will put together the right mix of units and a clear price.

    1. We read your enquiryIt comes straight to the team.
    2. We send your quoteUnits, delivery and servicing, priced in one place.
    3. We book you inConfirm the date and we take it from there.

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