Forum: Ruby on Rails 3 / 2 is 1?

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Joshua M. (Guest)
on 2008-10-18 01:13
Hi all

Why is 3/2=1 in a Rais view? How can I get Rails to output 1.5 as the

Roy P. (Guest)
on 2008-10-18 01:17
(Received via mailing list)
That's a common ruby gotcha.  Division of integers results in an
integer.  To fix, convert one or both numbers to floats with .to_f or
include a decimal place on the literal (e.g., 3.0/2)


Craig D. (Guest)
on 2008-10-18 01:18
(Received via mailing list)
At least one of the numbers needs to be a float. Here's an example of
script/console output:

Loading development environment (Rails 2.1.1)
>> 3/2
=> 1
>> 3.0/2
=> 1.5
>> 3/2.0
=> 1.5
>> 3.0/2.0
=> 1.5

In Ruby, division of integers returns only the integer part of the

Joshua M. (Guest)
on 2008-10-18 01:22
Thanks guys :-)
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