The Calculator on this page will convert a proper fraction such as 2/5
to a decimal fraction:
2/5 = 0·4
or vice-versa:
0.0625 is 1/16
The decimal equivalents of fractions here
can be given to any number of decimal places, unlike an ordinary calculator which only gives
up to 15 decimal places.
The button will fill in the fraction input values in the calculator
for a decimal that has certain patterns in it digits:
e.g. the decimal which is the pattern of numbers from 0 upwards
with 2 digits each is 0·00 01 02 03 04 05 06 07 08 09 10 11 ...
is the decimal expansion of the fraction 1/9801.
Use the buttons to investigate the example.
The lower panel can tell you if your fraction is
either
a decimal fraction that stops or "terminates" such as 2/5 which is 0.4
or
one which ends with repeating a series of digits, so it "recurs" such as 5/12 = 0·41666666...).