How to use unit converters
There are two types of unit converters: compact style and expanded style. The compactstyle converter converts one unit of measurement into another unit of measurement while the expandedstyle converter converts one unit of measurement into several different units of measurement.
How to use the compact style converter Select the unit to convert from in the input units list, input its value in the corresponding input box and select the unit to Converter to in the output units list. The conversion result will immediately appear in the output box and in the results box.
How to use the expanded style converter
Choose the unit to convert from and type the value (for example, "1"). Our conversion engine
will return a list of other units with the appropriate converted values.
Helpful hints
You can sort the units alphabetically or by popularity, switch between compact and expanded view using the
converter control panel which is at the top of each converter specific page, just below the site navigation panel.
Operations
Our converters support the use of mathematical expressions as well as simple values as input data for conversion. The following is a lists of supported basic operators, advanced operators, and constants.
The following table lists basic functions built into the converters:
Operator  Meaning  Example 
+  addition 
12+34 
  subtraction 
5.67.8 
*  multiplication 
5.5*110 
/  division 
128/5 
%  modulo (finds the remainder after division) 
14%2 
()  Forces the expression within the parentheses to be calculated first, overriding the normal order of operations 
2*(3+4) 
The following table lists advanced functions and constants built into the converters:
Operator  Meaning  Example 
pow  exponentiation (raise to a power of) 
pow(2,8) 
sqrt  square root 
sqrt(16) 
sin, cos, tan  trigonometric functions (numbers are assumed to be radians) 
cos(pi/3) 
asin, acos, atan, atan2  inverse trigonometric functions 
acos(.5) 
log  logarithm base e 
log(16) 
exp  e raised to a power 
exp(4.1) 
abs  the absolute value 
abs(5) 
round  round to the nearest integer 
round(1.45) 
ceil  the smallest integer greater than or equal to 
ceil(4.95) 
floor  the greatest integer less than or equal to 
floor(4.05) 
max  the greater number 
max(0,1,2,3,4) 
min  the lesser number 
min(5,6,7,8,9) 
Constant  Meaning  Example 
e  mathematical constant e, the base of natural logarithms, approximately 2.718 
e 
pi  the ratio of the circumference of a circle to its diameter, approximately 3.141592653589793 
pi 
ln2  the natural logarithm of 2, approximately 0.693 
ln2 
ln10  the natural logarithm of 10, approximately 2.302 
ln10 
log2e  the base2 logarithm of e, approximately 1.442 
log2e 
log10e  the base10 logarithm of e, approximately 0.434 
log10e 
sqrt1_2  the square root of 0.5, or one divided by the square root of 2, approximately 0.707 
sqrt1_2 
sqrt2  the square root of 2 
sqrt2 
