1. Microgram (µg): 1 microgram is equal to 1,000 nanograms (1 µg = 1,000 ng).
2. Milligram (mg): 1 milligram is equal to 1,000 micrograms or 1,000,000 nanograms (1 mg = 1,000 µg = 1,000,000 ng).
3. Gram (g): 1 gram is equal to 1,000 milligrams or 1,000,000 micrograms or 1,000,000,000 nanograms (1 g = 1,000 mg = 1,000,000 µg = 1,000,000,000 ng).
4. Kilogram (kg): 1 kilogram is equal to 1,000 grams or 1,000,000 milligrams or 1,000,000,000 micrograms or 1,000,000,000,000 nanograms (1 kg = 1,000 g = 1,000,000 mg = 1,000,000,000 µg = 1,000,000,000,000 ng).
These units are commonly used in various scientific fields to measure the mass or quantity of substances, with each unit representing a multiple of the previous one.
