The number of milligrams (mg) in a teaspoon depends on the substance being measured, as milligrams measure weight, and teaspoons measure volume. The conversion varies based on the substance’s density.
Here are some examples:
- Water: 1 teaspoon = 5,000 mg (since 1 mL of water weighs about 1 gram, and 1 teaspoon = 5 mL).
- Salt: Approximately 5,690 mg per teaspoon.
- Sugar: Approximately 4,200 mg per teaspoon