# Converting numbers via bit dropping **URL:** \ **Category:** Ruby\ **Created:** [April 2, 2006, 1:46am UTC](https://www.ruby-forum.com/t/converting-numbers-via-bit-dropping/56638 "2006-04-02T01:46:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![lists](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/cdc98d/32.png) [@lists](https://www.ruby-forum.com/u/lists)\ **Post date:** [April 2, 2006, 1:46am UTC](https://www.ruby-forum.com/t/converting-numbers-via-bit-dropping/56638/1 "2006-04-02T01:46:32Z")
Hi, I’m trying to figure out how to convert a number by dropping bits higher than the range that I want. For example, I’d like to convert 248 (0000 0001 0001 1100) into 28 (0001 1100) by converting any bits over the 8th one into a zero: 000 0001 0001 1100 ^^^ ^^^^ Any suggestions? Thanks, Ryan ---
**Author:** ![lists](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/cdc98d/32.png) [@lists](https://www.ruby-forum.com/u/lists)\ **Post date:** [April 2, 2006, 2:02am UTC](https://www.ruby-forum.com/t/converting-numbers-via-bit-dropping/56638/2 "2006-04-02T02:02:01Z")
Hi, > I’m trying to figure out how to convert a number by dropping bits > higher than the range that I want. For example, I’d like to convert > 248 (0000 0001 0001 1100) into 28 (0001 1100) by converting any bits This should be 284, right? > over the 8th one into a zero: > > 000 0001 0001 1100 > ^^^ ^^^^ > > Any suggestions? irb(main):001:0\> 284 & 255 =\> 28 HTH, Patrick ---
**Author:** ![lists](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/cdc98d/32.png) [@lists](https://www.ruby-forum.com/u/lists)\ **Post date:** [April 2, 2006, 2:08am UTC](https://www.ruby-forum.com/t/converting-numbers-via-bit-dropping/56638/3 "2006-04-02T02:08:11Z")
On Apr 1, 2006, at 5:58 PM, Patrick G. wrote: > Hi, > > > I’m trying to figure out how to convert a number by dropping bits > > higher than the range that I want. For example, I’d like to convert > > 248 (0000 0001 0001 1100) into 28 (0001 1100) by converting any bits > > This should be 284, right? Yep, my bad. > > over the 8th one into a zero: > > > > 000 0001 0001 1100 > > ^^^ ^^^^ > > > > Any suggestions? > > irb(main):001:0\> 284 & 255 > =\> 28 That sure does help, thanks! > HTH, > > Patrick -Ryan