Convert nanogram to stone (US)
Please provide values below to convert nanogram [ng] to stone (US) [st (US)], or Convert stone (US) to nanogram.
How to Convert Nanogram to Stone (Us)
1 ng = 1.5747304441777e-13 st (US)
Example: convert 15 ng to st (US):
15 ng = 15 × 1.5747304441777e-13 st (US) = 2.36209566626655e-12 st (US)
Nanogram to Stone (Us) Conversion Table
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Nanogram
A nanogram (ng) is a unit of mass equal to one billionth (10^-9) of a gram.
History/Origin
The nanogram was introduced as part of the metric system to measure extremely small quantities, especially in scientific and medical fields, as the need for precise measurement of tiny masses grew with technological advancements.
Current Use
Nanograms are commonly used in scientific research, pharmaceuticals, and environmental testing to measure very small amounts of substances accurately.
Stone (Us)
A stone (st) is a unit of weight primarily used in the United States, equal to 14 pounds or approximately 6.35 kilograms.
History/Origin
The stone has origins in medieval England, where it was used as a convenient weight measure for trade and commerce. Its value varied regionally before standardization, and it has been used historically for measuring human body weight and other goods.
Current Use
Today, the stone is mainly used in the UK and Ireland for body weight measurement, while in the United States, it is rarely used and often replaced by pounds or kilograms in most contexts.