Distance
1 inch= 2.54 cm
1 foot= 0.305 m = 30.48 cm
1 yard= 0.9144 m
1 mile= 1.61 km = 5,280 ft
1 kilometer= 1,000 m = 0.6214 mi
1 meter= 100 cm = 3.28 ft
1 centimeter= 0.3937 in = 10 mm
1 millimeter= 0.039 in
Volume
1 kilolitre= 1,000 L = 1 m³
1 litre= 1,000 mL = 1,000 cc
1 millilitre= 1 cc
1 fl oz= 29.57 mL
1 US gallon= 3.785 L
1 imp. gallon= 4.546 L
Weight
1 kilogram= 1,000 g = 2.2 lb
1 gram= 1,000 mg = 0.035 oz
1 milligram= 1,000 µg
1 microgram= 10⁻⁶ g
1 nanogram= 10⁻⁹ g
1 pound= 0.45 kg = 16 oz
1 ounce= 28.35 g