卷尺是一种软性的测量工具，由塑料、钢条、布料等材料制成。它容易携带，能够测量一些曲线的长度。

在服装业中所用的量衣尺即为一种卷尺，又称软尺，所用材料为PVC塑料和玻璃纤维。

A tape measure or measuring tape is a flexible ruler. It consists of a ribbon of cloth, plastic, fiber glass, or metal strip with linear-measurement markings. It is a common measuring tool. Its design allows for a measure of great length to be easily carried in pocket or toolkit and permits one to measure around curves or corners. Today it is ubiquitous, even appearing in miniature form as a keychain fob, or novelty item. Surveyors use tape measures in lengths of over 100 m (300+ ft). Various types of measuring tapes and construction materials are explained at this reference.