Teaspoon to Milligram Converter

Converting teaspoons (tsp) to milligrams (mg) requires knowing the density of the substance you're measuring, since teaspoons measure volume while milligrams measure mass. Here's what you need to know:

Conversion Formula

milligrams = teaspoons × 4,928.922 × density (g/mL)

Common Conversions

• 1 tsp water ≈ 4,929 mg
• 1 tsp milk ≈ 5,077 mg
• 1 tsp cooking oil ≈ 4,337 mg