Free 12 Hour Clock Conversion Calculator - This calculator performs the following two conversions:
1) Takes a time in 24 hour clock (military time) format and converts it to a 12 hour clock format (AM/PM)
2) Takes a time in 12 hour clock format and converts it to military time (12 hour clock format)

Free Area Conversions Calculator - This calculator converts between the following area measurements:
acre
hectare
square inch
square foot
square yard
square mile
square millimeter
square meter
square kilometer

Free Coin Denomination Conversions Calculator - This caculator converts between the following coin denominations:
* Penny
* Nickel
* Dime
* Quarter
* Half-Dollar
* Dollar

Free Computer Storage Conversions Calculator - This calculator converts between the following computer storage measurements:
* byte
* kilobyte
* megabyte
* gigabyte
* terabyte
* petabyte
* exabyte

Free Frequency Conversions Calculator - Converts between the following frequencies:
hertz
millihertz
kilohertz
megahertz
gigahertz
terahertz
rps
rpm
rph

Free Hour and Minute Conversion Calculator - Converts Hours and Minutes to Hours for things like timecards and such.

Free International Unit Conversions Calculator - This calculator converts between the following weight measurements:
* International Units (IU)
* mcg
* mg

Free Linear Conversions Calculator - Converts to and from the following linear measurements for a given quantity:
Inches
Feet
Yards
Miles
Micrometer
Millimeters
Centimeters
Meters
Kilometers
Furlongs

Free Liquid Conversions Calculator - Takes a liquid measurement as seen in things like recipes and performs the following conversions: ounces, pints, quarts, gallons, teaspoon (tsp), tablespoon (tbsp), microliters, milliliters, deciliters, kiloliters,liters, bushels, and cubic meters.

Free Pixels Per Inch PPI Calculator - This calculator determines the PPI from width, height, and diagonal in inches

Free Pressure Conversions Calculator - This calculator converts between the following pressure measurements:
atmosphere
bar
dynes/cm2
in. Hg
in. water
kg/cm2
mbar
mtorr or micron Hg
Pa or N/m2
PSI or lb/in2
torr or mm Hg

Free RGB and HEX conversions Calculator - This converts HTML colors from RGB (Red, Green, Blue) to HEX and HEX to RGB (Red, Green, Blue) as well as calculate the Hue.

Free Roman Numeral Conversions Calculator - Converts a Positive integer less than 4000 to a Roman Numeral.
Converts a Roman Numeral with a positive value less than 4000 to a number.

Free ROT-13 Conversions Calculator - This calculator converts ROT-13 (rot13) (rotate by 13 places) notation to standard notation or standard notation to ROT-13 notation.

Free Speed Conversions Calculator - This converts between the following speed measurements:
* mph
* ft/s
* km/h
* m/sec

Free Temperature Change Calculator - This calculator determines the total temperature change

Free Temperature Conversions Calculator - Performs the following temperature conversion measurements
* Fahrenheit (F)
* Celsius (C)
* Kelvin (K)
* Rankine (R)
* Newton (N)
* Reaumur

Free Time Conversions Calculator - Converts units of time between:
* nanoseconds
* microseconds
* milliseconds
* centiseconds
* kiloseconds
* seconds
* minutes
* hours
* days
* weeks
* fortnights
* months
* quarters
* years
* decades
* centurys
* milleniums
converting minutes to hours

Free Unit Conversions Calculator - Converts between a unit, pair, half-dozen, dozen, bakers dozen, and gross.

Free Weight Conversions Calculator - This calculator converts between the following weight measurements:
* Ounces (oz.)
* Pounds (lb.)
* Tons
* Milligrams (mg.)
* Grams
* Kilograms (kg.)
* Centigrams (cg.)
* Micrograms (mcg.)
* Stone