>>> import unitconv
    >>> unitconv.convert("3 meters in cm")
    u'3 meters = 300 centimeters'
    >>> unitconv.convert("1000 grams in kg")
    u'1000 grams = 1 kilogram'
    >>> unitconv.convert("2 cups to l")
    u'2 US cups = 0.4732 litres'
    >>> print unitconv.convert("300 yards")
    300 yards = 274.32 meters
    >>> unitconv.convert("34 days in weeks")
    u'34 days = 4.8571 weeks'
    >>> unitconv.convert("45mg in ounces")
    u'45 milligrams = 0.0016 ounces'
    >>> print unitconv.convert("300K in °f")
    300K = 80.33°F
    >>> unitconv.convert("50 cubic feet in m3")
    u'50 cubic feet = 1.4158 cubic meters'
    >>> unitconv.convert("2 cups in l")
    u'2 US cups = 0.4732 litres'
    >>> unitconv.convert("4 teaspoons")
    u'4 US teaspoons = 19.7157 millilitres'