Metric System Rules and Conversions

Metric System Rules

• Express parts of a fraction as decimals
• Always place a leading zero to the left of the decimal point if there is no whole number
• Do not use trailing zeros after the last digit after the decimal
• Do not use the abbreviation cc for mL, or μ for microgram
• Avoid periods after abbreviations
• Place commas in values at 1,000 or above
• Do not add "s" to a unit to make it plural
• Do not put a slash through zero (0).

Household/Metric Equivalents

• 1 ounce (oz) = 30 mL
• 1 tablespoon (T or tbs) = 15 mL
• 1 teaspoon (t or tsp) = 5 mL
• 1 cup (standard measuring cup) = 240 mL (8 oz)
• 1 liter (L) = 1000 milliliters (mL)

Metric Conversions

• 1 kilogram (kg) = 1,000 grams (g)

• 1 kilogram (kg) = 2.2 pounds (lbs)

• 1 gram (g) = 1,000 milligrams (mg)

• 1 milligram (mg) = 1,000 micrograms (mcg)

• 1 kg = 1000 g

• 1 mg = 1000 mcg

• 1 tsp = 5 mL

• 1 kg = 2.2 lb

• 1 g = 1000 mg

• 1 oz = 2 tbs

• 1 tbs = 15 mL

• 1 lb = 16 oz

• 1 oz = 30 mL

• 1 cc = 1 mL

This quiz covers the essential rules and household equivalents of the metric system, including common conversions between metric and imperial units. Test your knowledge on how to properly express measurements and convert between ounces, tablespoons, grams, kilograms, and more.