The Bidet Math for Business

The sector just sets a rough starting guess for how busy a toilet is. Your own roll count beats our guess — enter it if you have it.

Toilets you'll fit with a bidet

Rolls used per toilet, per week rough placeholder — use your invoice/stock data

Price per roll (bulk) $ delivered

$0.60

Paper reduction after bidets (household data suggests ~60%; commercial washrooms are unproven — default 40%, check 20/40/60)

60%

💵 Paper bill saved / year

🧻 Rolls avoided / year

🌍 CO₂ avoided / year

0 kg

💧 Water saved / year

0 L

least-certain figure

⏱️ Capacity value (optional)

Staff handling time per roll for the optional capacity value — order, stock, swap, bin/bag

1.0 min

Staff cost per hour (loaded)

$16

The headline number is the hard-dollar paper bill you stop paying. The "capacity value" is separate on purpose: freed-up staff minutes only become real cash if hours, overtime or outsourced work actually go down — so we don't add it to the headline. Set handling time to 0 to ignore it.

Commercial premises: read this before the payback number persuades you. The 2024 International Plumbing Code requires a bidet’s water supply to be protected against backflow by an air gap or an appropriate backflow preventer. The attachment costed on this page documents no backflow protection at all, and we could not find its maker in an official listing directory — only a partial list of test sections. A homeowner can weigh that themselves. A restaurant, hotel or office is inspected, and a facilities manager who installs twenty of these on the strength of a payback calculation is the person who gets asked for the listing. Get a licensed plumber to confirm what your supply already provides, and expect that a listed product with an integral vacuum breaker may be the specifiable option even though it costs more. The full audit, with sources →

Start a 30-day pilot — the attachment we recommend (1–2 units) → Home calculator (for your household) →

Affiliate links — we may earn a small commission at no extra cost to you. Pilot first, then scale: buy 1–2 units, count rolls for 30 days, and let your own numbers make the bulk decision (Amazon Business carries the same models).

The real cost of toilet paper isn't the paper

📥 Get the 1-page business case (free PDF)