Three measurements, taken from the pan you already own
The best soft-close toilet seats for 2026
Almost every complaint about a toilet seat is a measuring problem, and there are exactly three measurements. Hinge hole spacing — the distance between the centres of the two holes in the pan — is close to universal at around 155 mm on European ceramics, but not guaranteed, and it is the first to check. Length, from the hinge holes to the front of the pan, varies from about 40 to 48 cm and is the one that makes a seat look wrong. Width at the widest point completes it. After the fit, the material: duroplast is dense, heavy and takes a hard knock; thermoplastic is lighter, warmer to sit on and cheaper. Soft-close is a damper in the hinge, and it is a wear part — the seats worth buying are the ones where the hinge is sold separately. Quick-release, which lets the seat lift off for cleaning, is the feature people miss most once they have had it. We compare length, width, hinge hole spacing, material, hinge type and fixing, quick-release, and stated load capacity.