LUVETT helps you to find the right toilet lid. We explain the 3 important dimensions required for this in this guide quickly and easily and give you tips on how to correctly determine the essential data.

Unfortunately, there is no direct norm or a common standard for toilet size - this makes the search for a suitable toilet lid extremely difficult - the size of a toilet lid or toilet seat can therefore only be determined with the right knowledge.

The distances used can also differ from one another within the range of a manufacturer. If your toilet seat is warped, dirty, broken, out of date or simply no longer according to your taste, you are often faced with the question of how to find a suitable toilet seat for perfectly functioning ceramics.

How do I find the right toilet seat? Crash course: three steps to the right toilet seat

three steps to the right toilet seat

These steps are necessary to find all the dimensions you need:

  1. Determine the shape of the toilet ceramic (oval / D-shape)
  2. Measure the distance between the holes in the ceramic (in mm, center hole <-> center hole)
  3. Measure toilet correctly (determine length & width in mm)

Detailed instructions - How to determine all the necessary factors:

Basically, you should start by naming the correct shape. What is the shape of your previous seat or toilet?

Four forms have become established in Europe:

  • Oval (also called "universal shape")
  • D-shaped / D-shape / U-shape
  • Angular - pointed

The oval universal shape is the most widespread variant in toilet ceramics and thus also in toilet lids and toilet seats.

Measure the toilet seat or toilet ceramics correctly

After you have determined the required shape for the specific toilet in the first step, you now have to determine the exact dimensions of the toilet seat in order to fit on your toilet.

Measure the toilet seat or toilet ceramics correctly

The following 3 dimensions must be determined:

  • the borehole spacing
  • the length of the toilet seat / toilet ceramic
  • the width of the toilet seat / toilet ceramic

1) Measure the distance between the drill holes (standard: approx. 155mm / 160mm)

To determine the distance between the holes, measure from the center of the hole to the center of the hole. However, these data are not of ultimate importance, since toilet lids are now often supplied with variable fastening hinges. So you have some leeway for minor measurement errors. The variable hinges can be rotated and adjusted using an elongated hole, thus enabling individual, stepless adjustment to the existing drill holes.

2) Length

To do this, measure the distance to the front edge of the ceramic with a folding rule or tape measure. Place the folding rule in the middle of an imaginary line between the two mounting holes / drill holes, this way you simply get the required length.


3) Width

You can determine the required width of the toilet lid by determining the distance between the outer edge of the toilet at the widest point. Of course, you should measure as precisely as possible for an ideal result, but mostly small deviations of around 5mm are usually not a problem. Here are a few common dimensions and distances for orientation:

  • 355mm x 410mm (width x length)
  • 360mm x 465mm (width x length)
  • 370mm x 485mm (width x length)
  • 365mm x 460mm (width x length)

The following hinge distances are customary in the market: 125mm, 130mm, 140mm, 155mm, 160mm, 170mm, 185mm 125 mm, 130 mm, 140 mm, 155 mm, 160 mm, 170 mm, 185 mm