Hundred (100)

One hundred.

1 hundred = 100 pieces (exactly).

About the 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.

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

Hundred conversion chart

1 hundred expressed in every other counting & quantity unit:

Unit	1 hundred
Pieces	100
Dozens	8.333333333
Lakhs	0.001
Millions	0.0001
Crores	0.00001
Billions (short Scale)	1×10⁻⁷
Pairs	50
Gross	0.6944444444
Thousand	0.1
Trillions (short Scale)	1×10⁻¹⁰
Score	5
Half Dozens	16.66666667
Quadrillions	1×10⁻¹³
Reams	0.2
Moles	1.660539067×10⁻²²
Baker's Dozens	7.692307692
Small Gross	0.8333333333
Great Gross	0.05787037037
Myriads	0.01
Yi / Oku	0.000001
Arab (Indian)	1×10⁻⁷
Kharab (Indian)	1×10⁻⁹
Billions (long Scale)	1×10⁻¹⁰
Quires	4

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