Tonn

Tonn, spelled tonn in Norwegian, is the local term for a metric ton, the unit of mass equal to 1,000 kilograms. It is typically abbreviated with the symbol t and is the standard mass unit used in the metric system for larger masses.

In Norway and in some other Scandinavian contexts, tonn is the conventional word for the metric ton. In international usage, the term tonne (or metric ton) is widely used, with the same value and symbol t. English-language texts often distinguish between metric ton (tonne) and other ton variants such as the short ton (2000 pounds) or long ton (2240 pounds), but tonn itself is specific to Norwegian terminology for the metric unit.

Conversions and relationships to other units are straightforward: 1 tonne equals 1,000 kilograms, which is about 2,204.62262 pounds avoirdupois. In terms of other ton units, 1 tonne equals approximately 1.102311 short tons and 0.984207 long tons. These relationships are important in international trade, engineering, and logistics to ensure consistent mass measurements across systems.

Usage of tonn/tonne is widespread in science, industry, and transport, particularly in contexts requiring precise large-mass measurements. While the spelling varies by language—tonne in French and many English-language contexts, tonn in Norwegian—the underlying concept is the same: a metric unit of mass defined as 1,000 kilograms.