One can extract an Integer's digits using IntegerDigits and reassemble them into the Integer using FromDigits. Is there a function that reassembles the output of RealDigits into the Real?

  • 3
    $\begingroup$ N@FromDigits[RealDigits[123.55555]]? $\endgroup$
    – kglr
    Jul 5, 2014 at 4:29
  • 1
    $\begingroup$ @kguler: didn't realize fromdigits accounted for offset.. right in the details in the doc... +1 $\endgroup$
    – ciao
    Jul 5, 2014 at 4:31
  • $\begingroup$ @kguler Post an answer? It seems it's worth spelling out because people are not always aware that FromDigit already does this. $\endgroup$
    – Szabolcs
    Jul 5, 2014 at 4:33
  • $\begingroup$ @Szabolcs & rasher thank you both. Posted an answer. $\endgroup$
    – kglr
    Jul 5, 2014 at 8:07

1 Answer 1


From FromDigits>>Details:


For example:

(* 123.556 *) 

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