diff --git a/uppsrc/Core/String.h b/uppsrc/Core/String.h
index 88c8b7fdc..ed95aef5f 100644
--- a/uppsrc/Core/String.h
+++ b/uppsrc/Core/String.h
@@ -402,6 +402,7 @@ public:
 
 	String(const std::string& s)                           { String0::Set0(s.c_str(), (int)s.length()); }
 	std::string ToStd() const                              { return std::string(Begin(), End()); }
+	operator std::string() const                           { return ToStd(); }
 };
 
 inline std::string to_string(const String& s)              { return std::string(s.Begin(), s.End()); }
@@ -846,7 +847,6 @@ public:
 	operator std::wstring() const;
 	std::wstring ToStd() const                              { return std::wstring(Begin(), End()); }
 #endif
-
 };
 
 #ifndef _HAVE_NO_STDWSTRING
@@ -936,6 +936,8 @@ template<> inline String AsString(const char& a)            { return String(a, 1
 template<> inline String AsString(const signed char& a)     { return String(a, 1); }
 template<> inline String AsString(const unsigned char& a)   { return String(a, 1); }
 template<> inline String AsString(const bool& a)            { return a ? "true" : "false"; }
+template<> inline String AsString(const std::string& s)     { return String(s); }
+template<> inline String AsString(const std::wstring& s)    { return WString(s).ToString(); }
 
 unsigned ctoi(int c);
 
diff --git a/uppsrc/Core/Value.h b/uppsrc/Core/Value.h
index f630b5668..aa28c1bfb 100644
--- a/uppsrc/Core/Value.h
+++ b/uppsrc/Core/Value.h
@@ -223,6 +223,8 @@ public:
 	operator int() const             { return Is(INT_V) ? GetSmallRaw<int>() : GetOtherInt(); }
 	operator int64() const           { return Is(INT64_V) ? GetSmallRaw<int64>() : GetOtherInt64(); }
 	operator bool() const            { return Is(BOOL_V) ? GetSmallRaw<bool>() : GetOtherBool(); }
+	operator std::string() const     { return (String)*this; }
+	operator std::wstring() const    { return (WString)*this; }
 	
 	Value(const String& s) : data(s) { Magic(); }
 	Value(const WString& s);
@@ -234,6 +236,8 @@ public:
 	Value(Date d)                    : data(d, DATE_V, String::SPECIAL) { Magic(); }
 	Value(Time t)                    : data(t, TIME_V, String::SPECIAL) { Magic(); }
 	Value(const Nuller&)             : data((int)Null, INT_V, String::SPECIAL) { Magic(); }
+	Value(const std::string& s) : Value(String(s)) {}
+	Value(const std::wstring& s) : Value(WString(s)) {}
 
 	bool operator==(const Value& v) const;
 	bool operator!=(const Value& v) const { return !operator==(v); }
diff --git a/uppsrc/Core/src.tpp/Value_en-us.tpp b/uppsrc/Core/src.tpp/Value_en-us.tpp
index 18d43ecc2..b83b0850f 100644
--- a/uppsrc/Core/src.tpp/Value_en-us.tpp
+++ b/uppsrc/Core/src.tpp/Value_en-us.tpp
@@ -1,5 +1,4 @@
 topic "Value";
-[2 $$0,0#00000000000000000000000000000000:Default]
 [i448;a25;kKO9;2 $$1,0#37138531426314131252341829483380:class]
 [l288;2 $$2,2#27521748481378242620020725143825:desc]
 [0 $$3,0#96390100711032703541132217272105:end]
@@ -9,6 +8,7 @@ topic "Value";
 [l288;i1121;b17;O9;~~~.1408;2 $$7,0#10431211400427159095818037425705:param]
 [i448;b42;O9;2 $$8,8#61672508125594000341940100500538:tparam]
 [b42;2 $$9,9#13035079074754324216151401829390:normal]
+[2 $$0,0#00000000000000000000000000000000:Default]
 [{_}%EN-US 
 [ {{10000@(113.42.0) [s0; [*@7;4 Value]]}}&]
 [s1;@(0.0.255)3%- &]
@@ -117,6 +117,10 @@ ValueArray or ValueMap (technical and performance reasons).&]
 [s5;:Value`:`:operator int`(`)const:%- [* operator_int]()_[@(0.0.255) const]&]
 [s5;:Value`:`:operator int64`(`)const:%- [* operator_int64]()_[@(0.0.255) const]&]
 [s5;:Value`:`:operator bool`(`)const:%- [* operator_bool]()_[@(0.0.255) const]&]
+[s5;:Upp`:`:Value`:`:operator std`:`:string`(`)const:%- [* operator_std`::string]()_[@(0.0.255) c
+onst]&]
+[s5;:Upp`:`:Value`:`:operator std`:`:wstring`(`)const:%- [* operator_std`::wstring]()_[@(0.0.255) c
+onst]&]
 [s5;:Value`:`:Value`(const String`&`):%- [* Value]([@(0.0.255) const]_[_^String^ String][@(0.0.255) `&
 ]_[*@3 s])&]
 [s5;:Value`:`:Value`(const WString`&`):%- [* Value]([@(0.0.255) const]_[_^WString^ WString][@(0.0.255) `&
@@ -129,6 +133,10 @@ ValueArray or ValueMap (technical and performance reasons).&]
 [s5;:Value`:`:Value`(bool`):%- [* Value]([@(0.0.255) bool]_[*@3 b])&]
 [s5;:Value`:`:Value`(Date`):%- [* Value]([_^Date^ Date]_[*@3 d])&]
 [s5;:Value`:`:Value`(Time`):%- [* Value]([_^Time^ Time]_[*@3 t])&]
+[s5;:Upp`:`:Value`:`:Value`(const std`:`:string`&`):%- [* Value]([@(0.0.255) const]_[_^std`:`:string^ s
+td`::string][@(0.0.255) `&]_[*@3 s])&]
+[s5;:Upp`:`:Value`:`:Value`(const std`:`:wstring`&`):%- [* Value]([@(0.0.255) const]_[_^std`:`:wstring^ s
+td`::wstring][@(0.0.255) `&]_[*@3 s])&]
 [s2; Support of direct T`->Value and Value`->T conversions of standard 
 Value types. If conversion is not possible, throws ValueTypeError.&]
 [s3;%- &]
@@ -137,7 +145,7 @@ Value types. If conversion is not possible, throws ValueTypeError.&]
 ])&]
 [s2; Support for assignment from Null (e.g. Value v `= Null). Creates 
 Value containing (int)Null.&]
-[s3;%- &]
+[s3; &]
 [s4;%- &]
 [s5;:Value`:`:operator`=`=`(const Value`&`)const:%- [@(0.0.255) bool]_[* operator`=`=]([@(0.0.255) c
 onst]_[_^Value^ Value][@(0.0.255) `&]_[*@3 v])_[@(0.0.255) const]&]