How to Convert Nanograms to Milligrams

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A “gram” (g) is the basic unit of measurement of mass used in the metric system. “Nanograms” (ng) and “milligrams” (mg) are both units of grams. “Nano” means one-billionth. Therefore, a nanogram is a billionth of a gram. “Milli” means one-thousandth. Therefore a milligram is a thousandth of a gram. One milligram is equal to one million nanograms. The process of converting a nanogram amount to its equivalent milligram amount involves writing out and calculating a simple division equation.

    Write down the nanogram amount.

    Example: 16 ng

    Write an equation that divides the nanogram amount by one million.

    Example: 16 / 1,000,000 =

    Calculate the equation. The result is the milligram equivalent of the nanogram amount.

    Example: 16 / 1,000,000 = 0.000016

    In this example, it is learned that 16 ng is equivalent to 0.000016 mg.


About the Author

Maya Austen began freelance writing in 2009. She has written for many online publications on a wide variety of topics ranging from physical fitness to amateur astronomy. She's also an author and e-book publisher. Austen has a Bachelor of Arts in communications from the New England Institute of Art and currently lives in Boston, Mass.

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