Will it Fit?

How to Make Sure Your New Bidet Matches Your Toilet

Choosing the right bidet starts with one important question: Will it fit my toilet? At Bidets Online, we make it easy to find the right match, whether you’re buying an electric seat, a manual attachment, or a complete bidet toilet.

This guide explains how to measure your toilet, what shapes are compatible, and how to avoid common fitting mistakes. If you’re still unsure, our team is ready to help you confirm before you buy.

Toilet Pan Shapes – What You Need to Know

To ensure a proper fit, the most important factor is your toilet pan shape. In Australia, the most common pan shapes are:

  • Elongated: Long, oval shape with a more extended seat surface

  • D-shape: Modern curved design with straight sides and a rounded front

  • Round: Compact, circular shape typically found in older homes

Each bidet product on our website clearly lists which toilet pan it fits. Before purchasing, check the shape of your current toilet.

D Shape Toilet

Round Shape Toilet

Measuring for Fit – A Quick Guide

Here’s how to measure your toilet correctly to confirm compatibility with our bidet seats and attachments:

  • Length: Measure from the front edge of the bowl to the centre of the toilet seat bolt holes
  • Width: Measure the widest point of the bowl
  • Bolt hole spacing: Measure the distance between the two seat mounting holes; most Australian toilets have standard spacing (approximately 155mm)
  • Power access (for electric models): Ensure there’s a power point within 1.5 metres of the toilet
  • Water access: Make sure the water inlet is visible and accessible

If your toilet fits within the standard range, most of our seats will be compatible.

Compatible Toilet Types

Most bidets sold by Bidets Online are designed to suit standard Australian floor-mounted toilets. These include:

  • Close-coupled toilets
  • Back-to-wall toilets
  • Open-back toilets with visible plumbing
  • Standard rim and rimless designs

Please note that wall-hung or concealed cistern toilets may require special attention. These setups can still be compatible, but you may need longer hoses or extensions.

If you’re unsure, take a photo and email it to our team, and we’ll advise you on the best fit.

What About Bidet Attachments?

Bidet attachments (non-electric models that install under your existing toilet seat) are compatible with most standard pans, but they do require:

  • A flat mounting surface under the seat
  • Access to the water inlet
  • Sufficient room between the seat and the bowl edge

Because they don’t replace the seat, attachments are a great option for renters or budget-conscious buyers.

When to Choose a Full Bidet Toilet

If you’re building or fully renovating your bathroom, a complete electric bidet toilet might be a better option. These units combine the toilet and bidet in one seamless unit, ensuring a perfect fit and premium features.

Just ensure:

  • Your floor waste or P-trap is correctly positioned
  • You have a nearby power outlet
  • Your plumber confirms compliance with Australian plumbing codes

We’ll provide full specs if you choose this option.

Still Not Sure? Let Us Help

If you’re feeling unsure, we’re happy to help. Here’s what you can do:

  • Email us a photo of your toilet from the side and top
  • Measure your pan using the tips above and send the dimensions
  • Visit our Sydney showroom for in-person help
  • Call our team and we’ll walk you through it step by step

We help hundreds of Australians each month choose bidets that fit first time—no returns, no guesswork, no stress.

Why Buy From Bidets Online?

We stock only locally-compatible bidets that suit Australian homes. All products are tested for fit, and our support team can guide you through every step.

With every order, you get:

  • Free shipping Australia-wide on orders over $200
  • Same-day dispatch before 1 PM AEST
  • 2-year warranty on every product
  • In-stock fittings and parts for all units
  • Interactive Sydney showroom for viewing and pickup
  • Friendly Australian customer service via phone and email

No matter where you are in your bidet journey, we’ll make sure the product you choose fits right the first time.

Frequently Asked Questions

How do I know if a bidet seat will fit my toilet?

Measure the length and width of your pan, check the bolt hole spacing, and identify the pan shape. Most seats list compatible shapes.

What’s the difference between D-shape and elongated pans?

D-shape pans have straight sides with a rounded front, while elongated pans are longer and oval-shaped. Both are common in Australia.

Will bidet attachments work with any toilet?

They fit most standard toilets but may not suit models with unusual contours or limited seat clearance.

Can a bidet be installed  if my toilet is wall-hung?

Yes, but you may need a flexible hose extension and careful positioning of fittings. Contact us for guidance.

Do all bidets need electricity?

No. Manual attachments and non-electric seats work using water pressure only. Electric seats and full toilets do require power.

I live in a rental, can I install a bidet without damaging anything?

Yes. Non-electric attachments are ideal for renters and can be removed without leaving marks.

What if I buy a bidet that doesn’t fit?

We’re happy to guide you before you buy to avoid this. If needed, we’ll work with you to arrange a suitable exchange.

Can I bring measurements or photos to the showroom?

Absolutely. Bring photos or details, and we’ll help you find the right product in person.

Do bidet seats fit square toilets?

Most are not compatible with square-front pans. If in doubt, contact us before ordering.

Where can I view the products before I decide?

Our showroom at 7/13 Berry Street, Clyde NSW is open Monday to Friday, 9 AM – 5 PM. No appointment needed.