Convert Dalton to Long Ton

FromDalton (Da)

ToLong Ton (ton)

Dalton

The dalton (Da) or unified atomic mass unit (u) is a unit of mass used to express atomic and molecular weights. It is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state, and it is approximately equal to 1.66053906660 × 10⁻²⁷ kg.

Origin:

The dalton is named after the English chemist and physicist John Dalton, who developed the atomic theory of matter. The unit was adopted in 1961 by the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP) to provide a standardized unit for atomic and molecular weights.

Long Ton

The long ton (symbol lt) is a unit of mass primarily used in the United Kingdom and some Commonwealth countries. It is equal to 2,240 pounds or approximately 1,016.05 kilograms. The long ton is part of the imperial system and is larger than both the short ton (used in the U.S.) and the metric ton.

Origin:

The long ton originated in medieval England as a standardized measure for trade, particularly for goods like coal and other bulk materials. It was defined as 20 long hundredweight, with each long hundredweight being 112 pounds. This measure became part of the British Imperial System in 1824 and has been widely used in maritime and industrial contexts, especially in the UK, before the metric system was more broadly adopted.