METRIC UNITS

Length 
1 millimeter (mm)    =     0.001 meter (m)
1 centimeter (cm)    =     0.01 meter
1 decimeter (dm)    =     0.1 meter
1 meter (m)     =     1,000 millimeters (mm)
1 meter         =     100 centimeters (cm)
1 meter (m)     =     10 decimeters (dm)
1 kilometer (km)     =     1,000 meters

Capacity
1 milliliter (mL)    =     0.001 liter (L)
1 centiliter (cL)    =     0.01 liter
1 deciliter (dL)    =     0.1 liter
1 liter (L)         =     1,000 milliliters (mL)
1 metric cup     =     250 milliliters
1 kiloliter (kL)     =     1,000 liters

Mass / Weight 
1 milligram (mg)    =    0.001 gram (g)
1 centigram (cg)    =     0.01 gram
1 decigram (dg)    =     0.1 gram
1 gram (g)     =     1,000 milligrams (mg)
1 kilogram (kg)    =     1,000 grams
1 metric ton (t)     =     1,000 kilograms

Volume / Capacity / Mass for Water 
1 cubic centimeter (cm3) arrow 1 milliliter arrow 1 gram
1,000 cubic centimeters arrow 1 liter arrow 1 kilogram

Length 
1 foot (ft)        =     12 inches (in.)
1 yard (yd)    =     36 inches
1 yard        =     3 feet
1 mile (mi)        =     5,280 feet
1 mile        =     1,760 yards
1 nautical mile     =     6,076.115 feet

Capacity 
1 teaspoon (tsp)    =     1/6 fluid ounce (fl oz)
1 tablespoon (tbsp)    =     1/2 fluid ounce
1 cup (c)        =     8 fluid ounces
1 pint (pt)        =     2 cups
1 quart (qt)        =     2 pints
1 quart        =     4 cups
1 gallon (gal)     =     4 quarts

Weight 
1 pound (lb)    =     16 ounces (oz)
1 ton (T)         =     2,000 pounds

Time
1 minute (min)     =     60 seconds (sec)     
1 hour (hr)     =     60 minutes
1 day         =     24 hours
1 week (wk)     =     7 days
1 year (yr)        =     12 months (mo), or about 52 weeks
1 year         =     365 days
1 leap year     =     366 days