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Statistics calculator  Read instructions here

Siencetific calculator with reverse polish notaion. If You did finish school without using a RPN-calculator then You are not likeley to need one now so use this calculator instead

Have You ever used roman numbers , not very usefull but here is an roman to arabic converter

Calculate the body mass index. Find out if You are fat :-)

Convert numbers  octal or hexadecimal  to decimail notation.

Convert temprature between celcius farenheit and kelvin scales 

 Ascii table with htmlcodes  

Ascii 2 unicode Full extended ascii symbols

Convert lenght  Inch to metric  or convert  mass units  

Our users have requested fibonacci number so here is a list
and also a list with prime numbers.