Hundred to Thousand (100 to k)

1 hundred equals 0.1 thousand exactly.

1 hundred = 0.1 thousand

How to convert hundred to thousand

To convert hundred to thousand, multiply the number of hundred by 0.1. This factor is exact. To go the other way, multiply thousand by 10.

thousand = hundred × 0.1

Example: 10 hundred = 1 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

Hundred (100)

General & non-SICurrent unit

One hundred.

The English word hundred descends from Old English hundred and, further back, from a Proto-Germanic compound that joined the old root for 100 with a word meaning count or row. For much of history it did not always mean 100. Old Norse counted large numbers in twelves of tens, and medieval England used a long hundred of 120 beside the short hundred of 100. Around 1300 the Assize of Weights and Measures had both in play: a hundred kippers or a hundred ells of hemp canvas or linen meant 120, while a hundred fresh herring meant 100.

The word also named a historical subdivision of southern English counties, notionally 12,000 acres. Today a hundred is simply ten tens, five score, or a tenth of a thousand, and the SI prefix hecto stands for 10². The long hundred faded as Arabic numerals, which rely on base 10, spread from the 14th century onward.

1 hundred = 100 pieces (exactly).

Sources: Wiktionary: hundred; Wikipedia: Long hundred; 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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