A ton, metric ton or tonne is a unit of mass and occasionally of energy. It is equal to 1 megagram ( = 1000 kilograms).
- Several of the references below are explicit uses of the S.I. metric unit. Otherwise it is not impossible that what is used is the US/Imperial unit ( = 2000 pounds).
Units of mass
- A Rectyne monopod can weigh as much as 2 tons. (TNG: "The Icarus Factor")
- A humpback whale consumes "2 tons of shrimp per day." (Star Trek IV: The Voyage Home)
- In 2268, Deep Space K-7 had 2 tons of quadrotriticale in its silos, on hold for Sherman's Planet. (TOS: "The Trouble with Tribbles")
- The captain's yacht of the USS Enterprise-E carried 7 tons of ultritium explosives in 2375 (Star Trek: Insurrection).
- The cave-in caused in the caverns by the Son'a on the Ba'ku planet had almost 4 metric tons of rock blocking the entryway. (Star Trek: Insurrection)
- Prior to its destruction, the Bok'Nor delivered 14 metric tons of golside ore to the Regulon system. (DS9: "The Maquis, Part I")
- A single humpback whale has a mass of "about 40 tons." (Star Trek IV: The Voyage Home)
- Fort Knox stored over 50 metric tons of gold prior to the 22nd century. (VOY: "Dark Frontier")
- Vosk demanded 86 tons of aluminum plating and 170 tons of carbon steel from his Nazi allies. (ENT: "Storm Front")
- The Ares IV had a mass of 92 metric tons. (VOY: "One Small Step")
- The Vidiian asteroid discovered by Voyager contained "anywhere from 500 to 1,000 metric tons of dilithium. (VOY: "Phage")
- In 2373, Voyager discovered a gallicite vein with "a yield of nearly a kiloton; enough to completely refit the ship's warp coils." (VOY: "Blood Fever")
- Balok's cube had a mass of "about 2,000 metric tons." (TOS: "The Corbomite Maneuver")
- Two Bolian freighters carried several thousand tons of selenium and rhodium nitrite when they disappeared near the Badlands in 2373. (DS9: "For the Uniform")
- The Ferengi market price of 2,000 tons of Kohlanese barley was 182 bars of gold-pressed latinum in 2371. (DS9: "Prophet Motive")
- The USS Equinox had a 2 kiloton supply of kemacite ore. (VOY: "Equinox")
- The Xepolite freighter commanded by Drofo Awa claimed to have 5 kilotons of Regrean wheat husks in his cargo hold. (DS9: "The Maquis, Part II")
- Voyager retrieved 8 kilotons of debris from the Borg probe, mostly fragments of its hull. (VOY: "Dark Frontier")
- The Quarren facility was capable of producing 8,000 metric tons of tylium per second at 94% thermal efficiency. (VOY: "Workforce")
- The Balok's pilot vessel had a "mass, a little under 11,000 metric tons." (TOS: "The Corbomite Maneuver")
- Terok Nor processed about 20,000 tons of uridium each day. (DS9: "Civil Defense")
- A Y class freighter can haul at least 20 kilotons. (ENT: "Fortunate Son")
- An Intrepid-class starship has a mass of 700,000 metric tons. (VOY: "Phage", "Relativity")
- A Constitution-class starship has a mass of almost 1 million tons. (TOS: "Mudd's Women")
- The Tellarite freighter Tezra "could haul 1 million metric tons at warp 4.5." (ENT: "Bounty")
- A Borg scout ship had a mass of 2.5 million metric tons. (TNG: "I Borg")
- Penk's starship had a mass of 5 million metric tons. (VOY: "Tsunkatse")
Units of energy
A ton is also a way of indicating the energy released by an explosion of one metric ton of TNT - 4.184 gigajoules. In the 20th century nuclear weapons were graded by megatonnage - by the millions of megagrams of TNT they equalled.
- 250 tons was yield of the thermokinetic explosion produced by Romulan tricobalt mines used in the 22nd century. (ENT: "Minefield")
- A fusion explosion of 97.835 megatons will result if the impulse engine of a Constitution-class starship is overloaded. (TOS: "The Doomsday Machine")