| 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) |
