Unit Conversion Software Web Widgets Loan Calculator Currency Rates Country Flags Unit Converter
Faq Help
No Ads
How to use unit converters

There are two types of unit converters: compact style and expanded style. The compact-style converter converts one unit of measurement into another unit of measurement while the expanded-style 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.


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:

+addition 12+34
-subtraction 5.6-7.8
*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:

powexponentiation (raise to a power of) pow(2,8)
sqrtsquare root sqrt(16)
sin, cos, tantrigonometric functions (numbers are assumed to be radians) cos(pi/3)
asin, acos, atan, atan2inverse trigonometric functions acos(.5)
loglogarithm base e log(16)
expe raised to a power exp(4.1)
absthe absolute value abs(-5)
roundround to the nearest integer round(1.45)
ceilthe smallest integer greater than or equal to ceil(4.95)
floorthe greatest integer less than or equal to floor(4.05)
maxthe greater number max(0,1,2,3,4)
minthe lesser number min(5,6,7,8,9)
emathematical constant e, the base of natural logarithms, approximately 2.718 e
pithe ratio of the circumference of a circle to its diameter, approximately 3.141592653589793 pi
ln2the natural logarithm of 2, approximately 0.693 ln2
ln10the natural logarithm of 10, approximately 2.302 ln10
log2ethe base-2 logarithm of e, approximately 1.442 log2e
log10ethe base-10 logarithm of e, approximately 0.434 log10e
sqrt1_2the square root of 0.5, or one divided by the square root of 2, approximately 0.707 sqrt1_2
sqrt2the square root of 2 sqrt2

Copyright © 1998-2009 UnitConversion.org