Convert Chain (ch) to Barleycorn (barleycorn) instantly.
About these units
Chain (ch)
A chain is equal to 66 feet or 4 rods, and it was standardized by surveyor Edmund Gunter in the 17th century. "Gunter's chain," consisting of 100 metal links, became the backbone of land surveying in the English-speaking world for centuries. Its convenience stems from simple arithmetic: 10 square chains make an acre, making land area calculations straightforward. Railroads, farmland, and city parcels across the United States and the Commonwealth nations were once laid out using chains, so the unit appears in countless historical records. Even today, some legal property descriptions still reference chain-based measurements, making the unit relevant for modern surveyors who interpret old maps. Although high-precision digital equipment has replaced physical chains, the unit's structural role in land division ensures its lasting importance.
Barleycorn (barleycorn)
The barleycorn is an English unit, approximately 1/3 inch (8.47 mm), originally based on the length of a grain of barley. It served as a small-scale measure in tailoring, shoe sizing, and other crafts. In particular, the English shoe size system was historically based on barleycorns, with increments in size corresponding to single barleycorn units. This unit exemplifies the anthropometric and agronomic origins of measurement. Even today, the barleycorn's influence persists in the traditional shoe sizing system in the UK and the US, providing continuity with historical practices.