tablespoon (UK) Unit Converter

Definition of tablespoon (UK) unit

A UK tablespoon is a culinary volume measure equal to 17.7582 millilitres, commonly rounded to 18 millilitres. It is used for measuring liquid or dry ingredients, and is distinct from the smaller modern tablespoon used in some countries.

History of tablespoon (UK) unit

The UK tablespoon developed from older domestic spoons used both for eating and approximate kitchen measurement. In the British Imperial system, it became standardized as one half of an imperial fluid ounce, or four imperial fluid drachms, equalling approximately 17.76 millilitres. This value reflects nineteenth-century British measurement conventions, established alongside wider Imperial standards. During metrication in the United Kingdom, cookbooks and measuring sets increasingly adopted the 15-millilitre tablespoon. Consequently, historical or conversion contexts may mean 17.76 millilitres, while contemporary British recipes generally intend 15 millilitres.

Applications of tablespoon (UK) unit

Today, the traditional UK tablespoon appears mainly in historical recipes, imperial-unit references, and online conversion tools. It can measure sauces, oils, spices, or medicines where an imperial specification is intended. In everyday British cooking, a marked 15-millilitre measuring spoon is more common. Users should check the recipe’s date, country, and stated measurement system before converting.

Complete list of tablespoon (UK) unit conversion