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Converter

 
Convert currency, units, base number, text to QR code, etc
1 euro to usd
1 feet to cm
1 celsius to kelvin
binary 111 to decimal or bin 111 to dec
qr code of a journey of a thousand miles begins with a very first single step
123456789 to english
10 * 2 + 1 to english
123456789 to chinese
12:30:20 to second
 

Calculator

 
Perform simple mathematic calculations
1+2*3-4/5^6+(7+8)
10 % 8
50% of 200
20 - 50%
20 + 50%
5 permute 3
10 choose 2
permute a,b,c,d

Date & Time

 
day of 25/Dec/2012
31/mar/2012 - 1/jan/2012
31/jan/2012 + 3 day
25/dec/2012 - today

Dictionary

 
Find more than just definition of words, but also synonym, antonym, hyponym and hypernym of words. Examples :
define love
synonym of love
antonym of light
hyponym of hotel or hypo of hotel
hypernym of hotel or hype of hotel
 

Programming

Some tools for programmer
tidy html <!DOCTYPE html><html><head></head><body><p>Hello World!</p></body></html>
my ip
my user agent
lorren ipsum
md5 abc
sha1 abc
sha256 abc
sha384 abc
sha512 abc
encode url http://qwerq.com/index.pl?q=define love
decode url http%3A%2F%2Fqwerq.com%2Findex.pl%3Fq%3Ddefine%20love
encode html <>"'&

Text Tools

Perform text transformation
upper case of the quick brown fox jumps over the lazy dog
lower case of THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
length of a journey of a thousand miles begins with a very first single step
unique letter of A jug fills drop by drop