Fast conversion between single and double precision floating point and text

LTS Haskell 22.30:
Stackage Nightly 2024-07-21:
Latest on Hackage:

See all snapshots double-conversion appears in

BSD-2-Clause licensed and maintained by Bryan O'Sullivan
This version can be pinned in stack with:double-conversion-,4625

Module documentation for

Used by 3 packages in nightly-2024-04-22(full list with versions):

Welcome to double-conversion

double-conversion is a fast Haskell library for converting between double precision floating point numbers and text strings. It is implemented as a binding to the V8-derived C++ double-conversion library.

Join in!

We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.

Please report bugs via the github issue tracker.

Master git repository:

  • git clone git://


This library is written and maintained by Bryan O’Sullivan, [email protected].