# Nanograms to Centigrams (ng to cg) Source: https://www.unitconvertercalculator.com/weight/nanograms-to-centigrams/ **1 ng = 1.0E-7 cg** One nanogram equals exactly 0.0000001 centigrams, or 10-7 centigrams. The nanogram at one billionth of a gram measures forensic DNA traces and environmental pollutants, while the centigrams at 0.01 grams serves older metric references. About 10,000,000 nanograms make one centigrams. ## Formula Apply the conversion factor ## Conversion Table | Nanograms (ng) | Centigrams (cg) | |---|---| | 100000 ng | 0.01 cg | | 500000 ng | 0.05 cg | | 1000000 ng | 0.1 cg | | 5000000 ng | 0.5 cg | | 10000000 ng | 1 cg | | 50000000 ng | 5 cg | | 100000000 ng | 10 cg | | 500000000 ng | 50 cg | | 1000000000 ng | 100 cg | | 5000000000 ng | 500 cg | ## Units ### Nanogram (ng) A nanogram is one billionth of a gram and one trillionth of a kilogram. Used in medical diagnostics for hormone levels and drug testing. ### Centigram (cg) A centigram is one hundredth of a gram. It is a metric unit rarely used in everyday life but appears in some scientific and educational contexts. ## Background This conversion connects forensic and analytical science with the broader metric hierarchy. Both units are metric, ensuring an exact power-of-ten relationship. The conversion exists primarily for mathematical completeness within the metric system. ## Good to Know Both the nanogram and the centigram are metric units that most people never encounter. But while the centigram faded into obscurity, the nanogram found its purpose in 20th-century forensic science and analytical chemistry. One unit was forgotten; the other became indispensable. The metric system created both equally; human need elevated one and ignored the other. ## FAQ ### How many nanograms are in one centigrams? Exactly 10,000,000 nanograms. One centigram is 0.01 grams or 10,000,000 nanograms. ### Is this conversion exact? Yes, both units are metric. Nanogram-to-centigrams conversion is an exact power of ten because both are defined as decimal fractions of the gram. ### Where is the nanogram used in practice? In forensic DNA profiling (nanogram DNA samples), anti-doping testing (nanograms per milliliter of blood), environmental monitoring (nanograms per liter of water), and pharmacokinetics (measuring drug levels in blood). ## Non-Frequently Asked Questions ### How small is one nanogram compared to one centigrams? Ten million of anything sounds significant, but 10 million nanograms is just 10 milligrams - about the weight of two grains of rice. The nanogram is so small that even millions of them add up to negligible quantities. ### Is the nanogram-to-centigrams conversion useful to anyone? The centigram and the nanogram are both metric underdogs. The centigram lost to the milligram; the nanogram thrives because forensic science demands it. Their conversion factor of 107 is exact, clean, and used by approximately nobody. ### Is a nanogram the smallest thing that matters in science? Not the smallest, but among the smallest routinely used. Picograms (10-12 g) and femtograms (10-15 g) are used in advanced molecular biology. 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