Trillions (short Scale) to Thousand (T to k)

1 trillion (short scale) equals 1,000,000,000 thousand exactly.

1 trillion (short scale) = 1,000,000,000 thousand

How to convert trillions (short scale) to thousand

To convert trillions (short scale) to thousand, multiply the number of trillions (short scale) by 1,000,000,000. This factor is exact. To go the other way, multiply thousand by 1×10⁻⁹.

thousand = trillions (short scale) × 1,000,000,000

Example: 10 trillions (short scale) = 10,000,000,000 thousand.

Large-number names differ around the world: this site uses the short scale (billion = 10⁹) by default, and lists the long-scale billion separately.

About these units

Trillion (short Scale) (T)

General & non-SICurrent unit

One thousand billion (10¹²) in the short scale used in English.

A trillion is a thousand billion, 10¹², and its name fits the short-scale pattern in which each new name multiplies by a thousand: million, billion, trillion, quadrillion. The prefix tri- is Latin for three, and in Jehan Adam's 1475 scheme trimillion meant the third power of a million, 10¹⁸. That is still the long-scale meaning of trillion, so the short-scale trillion equals the long-scale billion.

The SI prefix for 10¹² is tera-. Where the long scale is used, including continental Europe, French Canada, and the Spanish-speaking Americas, the same word names 10¹⁸. A trillion seconds is about 31,700 years. Trillions turn up in energy statistics: an explainer from the U.S. Energy Information Administration cites U.S. natural gas consumption of 32.51 trillion cubic feet, which it converts to 33.61 quads.

1 trillion (short scale) = 1,000,000,000,000 pieces (exactly).

Sources: Wikipedia: Names of large numbers; U.S. EIA: British thermal units (Btu); BIPM SI Brochure, 9th edition (2019)

Thousand (k)

General & non-SICurrent unit

One thousand (10³).

Thousand traces back through Middle English thousend to Old English þūsend and a Proto-Germanic form, and it has close relatives across the Germanic languages: German tausend, Dutch duizend, Swedish tusen, and Icelandic þúsund. Cognates also appear in Slavic and Baltic languages, among them Polish tysiąc and Lithuanian tūkstantis. Learned English vocabulary adds chiliad, a collective for a thousand, and millennium.

Its Roman numeral is M, and its scientific shorthand is the SI prefix kilo-, standing for 10³. The word has not always meant 1,000. In Old Norse counting, which grouped numbers in twelves of tens, a thousand meant 1,200. At ordinary scales, a thousand seconds is about 16.7 minutes, and a thousand days is about 2.7 years.

1 thousand = 1,000 pieces (exactly).

Sources: Wiktionary: thousand; Wikipedia: Long hundred; BIPM SI Brochure, 9th edition (2019)

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