The dimensions for the washbasin are based on standards

Generally, the dimensions of a vanity are at the discretion of the homeowner. However, there are flanking building standards and technical conditions that should not be ignored. This concerns the height and width of the basins and slabs as well as the horizontal and vertical depths. Distance surface defines the freedom of movement.

Measurement factors for the standards

The basis for this is the coordination dimension for bathroom equipment specified in DIN 68935. In public buildings, the designs must be made in the specified tolerances. For the private sector and the self-build a washstand they serve as a valuable guide.

Individual bathroom designs with desired dimensions are subject to the same design factors as standardized designs, These include predetermined connections, freedom of movement and perfect function in water inlet and outlet. Dimensional changes usually require several follow-up adjustments.

The dimensions for the washbasin are based on standards: based


The height of the washstand should provide the best possible comfort for all users. The normalized range is 85 to 95 centimeters. It takes into account the average height of the majority of adult users in Germany.

Whether an average of the users is used for decision-making or the height is adapted to the smallest adult is up to the room owner. Special child heights, barrier-free wheelchair washstands or height-adjustable variants can be added or replaced.


The width is aligned with the standard width of many sinks of fifty centimeters. Each washing area on a vanity should have a single width of sixty centimeters. Narrower versions lead to "jostling" and movement restrictions.

Horizontal depth

The distance from the front edge of the washbasin to the bathroom wall should be at least ten centimeters longer than the horizontal depth of the washbasin used. Important is the front distance between the edge of the table and the edge of the pool. More than five centimeters lead to uncomfortable stretching movements during use. In particular, when self-build a vanity top should be paid to Saw placements.

Vertical depth

The sizes of washbasins are heavily dependent on the size of the basin and depth. For top-mounted or above-ground pools, the vanity tops should have the same lateral overhangs they would need if the basins were to be integrated.


The coordination dimensions for bathroom furniture provide a space in front of each sink of seventy centimeters. The individual planning and change of dimensions should always consider the freedom of movement. In many cases, changing sink shapes or repositioning of fittings can compensate for falling below the standard dimensions in terms of ease of use.

standard connections

The water inlets in the wall are arranged side by side. The two supply lines form the upper two corner points of an inverted triangle and the discharge opening the lower tip. The connection of the washbasin must be done centrally for functional and technical reasons. For dimensional changes or relocations, the wall connections must be adjusted accordingly. The minimum distance between the drainage height and the washbasin must be 32 centimeters.

Tips & Tricks

For a practical placement test, imitate a toothbrushing movement with the elbows extended with the arm straight. You should have full freedom of movement at least in one direction.

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