Hyper Unit Converter

Allows for conversion of multiple units on the same screen and modifying of values also on the same screen,
very intuitive easy to use graphical user interface
Converts distance units: mm, cm, metre, km, inches, feet, yards, and miles simultaneously
Converts speed units: cm/sec, foot/sec, inch/sec, km/hour, mile/hour, knot, mach, m/sec, mm/sec simultaneously
Converts temperature units: celcius, fahrenheit, kelvin simultaneously
Converts weight units: centigram, decigram, dekagram, dram, grain, gram, hectogram, kilogram, pounds, microgram, milligram, ounce simultaneously