quartermeter

The term quartermeter (also written as quarter‑meter) refers informally to a length equal to one quarter of a metre. One quartermeter is precisely 0.25 m, or 25 centimetres. It can also be expressed as 9.842519685 inches or 250 millimetres. The unit is not an official SI derived unit, but it is sometimes used in everyday descriptions of small lengths, especially in contexts where metric notation is convenient but the measured segment is only a small fraction of a full metre.

In practical applications a quartermeter is frequently cited when dealing with textiles, where a segment of fabric is described as one quarter of a metre in length. The term also appears in construction and landscaping, for instance when specifying a short span of fencing, edging, or a piece of painted wall that does not exceed a quarter of a metre. In quilting and pattern making, a quartermeter can denote the length of fabric needed for a small patch or a portion of a larger piece.

Because the magnitude involved is small, the term may appear in instructional contexts, such as “cut the cloth to a quartermeter long.” In contrast, in engineering documentation the exact value 0.25 m is normally used throughout the International System of Units.

The quartermeter is sometimes colloquially referred to as "one quarter of a meter" and occasionally abbreviated simply as ¼ m. It is useful mainly for everyday communication when a concise figure is preferable to a full three‑digit notation.