Measurements and the Metric System, Front matter | Biology 2e

Learning objectives

Measurements and the Metric System
Measurement	Unit	Abbreviation	Metric Equivalent	Approximate Standard Equivalent
Length	nanometer	nm	1 nm = 10⁻⁹ m	1 mm = 0.039 inch 1 cm = 0.394 inch 1 m = 39.37 inches 1 m = 3.28 feet 1 m = 1.093 yards 1 km = 0.621 miles
	micrometer	µm	1 µm = 10⁻⁶ m
	millimeter	mm	1 mm = 0.001 m
	centimeter	cm	1 cm = 0.01 m
	meter	m	1 m = 100 cm 1 m = 1000 mm
	kilometer	km	1 km = 1000 m
Mass	microgram	µg	1 µg = 10⁻⁶ g	1 g = 0.035 ounce 1 kg = 2.205 pounds
	milligram	mg	1 mg = 10⁻³ g
	gram	g	1 g = 1000 mg
	kilogram	kg	1 kg = 1000 g
Volume	microliter	µl	1 µl = 10⁻⁶ l	1 ml = 0.034 fluid ounce 1 l = 1.057 quarts 1 kl = 264.172 gallons
	milliliter	ml	1 ml = 10⁻³ l
	liter	l	1 l = 1000 ml
	kiloliter	kl	1 kl = 1000 l
Area	square centimeter	cm²	1 cm² = 100 mm²	1 cm² = 0.155 square inch 1 m² = 10.764 square feet 1 m² = 1.196 square yards 1 ha = 2.471 acres
	square meter	m²	1 m² = 10,000 cm²
	hectare	ha	1 ha = 10,000 m²
Temperature	Celsius	°C	—	1 °C = 5/9 × (°F − 32)

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