diff --git a/include/cxx/cwchar b/include/cxx/cwchar
index 813f4cde9c..284a351a98 100755
--- a/include/cxx/cwchar
+++ b/include/cxx/cwchar
@@ -111,6 +111,7 @@ namespace std
   using ::wcsspn;
   using ::wcsstr;
   using ::wcstod;
+  using ::wcstof;
   using ::wcstok;
   using ::wcstol;
   using ::wcstoll;
diff --git a/include/wchar.h b/include/wchar.h
index 5f31fe2ba6..0644cb9f40 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -215,6 +215,7 @@ size_t            wcsrtombs(FAR char *, FAR const wchar_t **, size_t,
 size_t            wcsspn(FAR const wchar_t *, FAR const wchar_t *);
 FAR wchar_t      *wcsstr(FAR const wchar_t *, FAR const wchar_t *);
 double            wcstod(FAR const wchar_t *, FAR wchar_t **);
+float             wcstof(FAR const wchar_t *, FAR wchar_t **);
 FAR wchar_t      *wcstok(FAR wchar_t *, FAR const wchar_t *, FAR wchar_t **);
 long int          wcstol(FAR const wchar_t *, FAR wchar_t **, int);
 long double       wcstold(FAR const wchar_t *, FAR wchar_t **);
diff --git a/libc/libc.csv b/libc/libc.csv
index 8538421b88..9e3c76b28f 100644
--- a/libc/libc.csv
+++ b/libc/libc.csv
@@ -202,6 +202,7 @@
 "wcsftime","wchar.h","defined(CONFIG_LIBC_WCHAR)","size_t","FAR wchar_t *","size_t","FAR const wchar_t *","FAR const struct tm *"
 "wcslcpy","wchar.h","defined(CONFIG_LIBC_WCHAR)","size_t","FAR const wchar_t *","FAR const wchar_t *","size_t"
 "wcslen","wchar.h","defined(CONFIG_LIBC_WCHAR)","size_t","FAR const wchar_t *"
+"wcstof","wchar.h","defined(CONFIG_LIBC_WCHAR)","float","FAR const wchar_t *","FAR wchar_t **"
 "wcstol","wchar.h","defined(CONFIG_LIBC_WCHAR)","long int","FAR const wchar_t *","FAR wchar_t **","int"
 "wcstold","wchar.h","defined(CONFIG_LIBC_WCHAR)","long double","FAR const wchar_t *","FAR wchar_t **"
 "wcstoll","wchar.h","defined(CONFIG_LIBC_WCHAR)","long long int","FAR const wchar_t *","FAR wchar_t **","int"
diff --git a/libc/wchar/Make.defs b/libc/wchar/Make.defs
index 5fb39dc3c6..680ab5504c 100644
--- a/libc/wchar/Make.defs
+++ b/libc/wchar/Make.defs
@@ -41,7 +41,7 @@ CSRCS += lib_wcscmp.c lib_wcslen.c lib_wmemchr.c lib_wmemcmp.c
 CSRCS += lib_wmemcpy.c lib_wmemmove.c lib_wmemset.c lib_btowc.c
 CSRCS += lib_mbrtowc.c lib_wctob.c lib_wcslcpy.c lib_wcsxfrm.c
 CSRCS += lib_wcrtomb.c lib_wcsftime.c lib_wcscoll.c lib_wcstol.c
-CSRCS += lib_wcstoll.c lib_wcstoul.c lib_wcstold.c
+CSRCS += lib_wcstoll.c lib_wcstoul.c lib_wcstold.c lib_wcstof.c
 
 # Add the wchar directory to the build
 
diff --git a/libc/wchar/lib_wcstof.c b/libc/wchar/lib_wcstof.c
new file mode 100644
index 0000000000..c380f21a8a
--- /dev/null
+++ b/libc/wchar/lib_wcstof.c
@@ -0,0 +1,60 @@
+/****************************************************************************
+ * libc/wchar/lib_wcstof.c
+ *
+ *   Copyright (c)1999 Citrus Project,
+ *   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdlib.h>
+#include <wchar.h>
+
+#ifdef CONFIG_LIBC_WCHAR
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: wcslen
+ *
+ * Description:
+ *   The wcstof() function is the wide-character equivalent of the strtof()
+ *   function. It converts a wchar string to long long value.
+ *
+ ****************************************************************************/
+
+float wcstof(FAR const wchar_t *nptr, FAR wchar_t **endptr)
+{
+  return strtof((FAR const char *)nptr, (FAR char **)endptr);
+}
+
+#endif /* CONFIG_LIBC_WCHAR */