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

1 thousand equals 1×10⁻⁹ trillions (short scale) exactly.

1 thousand = 1×10⁻⁹ trillions (short scale)

How to convert thousand to trillions (short scale)

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

trillions (short scale) = thousand × 1×10⁻⁹

Example: 10 thousand = 1×10⁻⁸ trillions (short scale).

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

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)

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)

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