diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+7.1.3
+
+* Fix the GHCJS build by not using `double-conversion`, as it relies on a native C library which obviously isn't available in GHCJS (it is still used in native builds).
+
 7.1.2
 
 * Removed direct dependency on integer-gmp, instead using very similar code from the `text` package. This changed the implementation of `build` for `Integer`, which results in better performance in some cases, and no performance degradation. See the benchmarking reports in bench/reports for more details.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -534,7 +534,7 @@
 From within your `nix-shell`, run `cabal bench`.
 
 To build the html benchmarking reports, run `cabal bench --benchmark-option=-obench/reports/7.2.0.html > bench/reports/7.2.0.txt`, replacing '7.2.0' with the current version.
-This will output the file `bench.html` which you can open in a browser.
+This will output the file `bench/reports/7.2.0.html` which you can open in a browser, and bench/reports/7.2.0.txt which you can view in a terminal or text editor.
 
 The benchmarks are in `bench/bench.hs`.
 
diff --git a/formatting.cabal b/formatting.cabal
--- a/formatting.cabal
+++ b/formatting.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.4
 name:                formatting
-version:             7.1.2
+version:             7.1.3
 synopsis:            Combinator-based type-safe formatting (like printf() or FORMAT)
 description:         Combinator-based type-safe formatting (like printf() or FORMAT), modelled from the HoleyMonoids package.
                      .
@@ -54,11 +54,13 @@
   hs-source-dirs:    src
   build-depends:
     clock >= 0.4,
-    double-conversion ^>= 2.0.2.0,
     old-locale,
     scientific >= 0.3.0.0,
     time >= 1.5,
     transformers,
+  if !impl(ghcjs)
+    build-depends:
+      double-conversion ^>= 2.0.2.0,
   exposed-modules:
     Formatting
     Formatting.Formatters
diff --git a/src/Data/Text/Format.hs b/src/Data/Text/Format.hs
--- a/src/Data/Text/Format.hs
+++ b/src/Data/Text/Format.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE RelaxedPolyRec #-}
+{-# LANGUAGE CPP #-}
 
 -- |
 -- Module      : Data.Text.Format
@@ -23,7 +24,11 @@
     , shortest
     ) where
 
-import           Data.Double.Conversion.Text
+#ifdef ghcjs_HOST_OS
+import           Text.Printf
+#else
+import           Data.Double.Conversion.Text (toFixed, toShortest)
+#endif
 import qualified Formatting.Buildable as B
 import           Data.Text.Format.Types (Hex(..))
 import qualified Data.Text.Lazy as LT
@@ -48,13 +53,27 @@
          Int
       -- ^ Number of digits of precision after the decimal.
       -> a -> Builder
+#ifdef ghcjs_HOST_OS
+fixed decs = fromString . toFixed . realToFrac
+  where
+    toFixed :: Double -> String
+    toFixed = printf ("%f." ++ show decs)
+#else
 fixed decs = fromText . toFixed decs . realToFrac
+#endif
 {-# NOINLINE[0] fixed #-}
 
 -- | Render a floating point number using the smallest number of
 -- digits that correctly represent it.
 shortest :: Real a => a -> Builder
+#ifdef ghcjs_HOST_OS
+shortest = fromString . toShortest . realToFrac
+  where
+    toShortest :: Double -> String
+    toShortest = printf "%f"
+#else
 shortest = fromText . toShortest . realToFrac
+#endif
 {-# INLINE shortest #-}
 
 -- | Render an integer using hexadecimal notation.  (No leading "0x"