diff --git a/icu4c/source/i18n/csdetect.cpp b/icu4c/source/i18n/csdetect.cpp
index 079dc6da8c6..36552c4b762 100644
--- a/icu4c/source/i18n/csdetect.cpp
+++ b/icu4c/source/i18n/csdetect.cpp
@@ -87,14 +87,10 @@ static void U_CALLCONV initRecognizers(UErrorCode &status) {
     CSRecognizerInfo *tempArray[] = {
         new CSRecognizerInfo(new CharsetRecog_UTF8(), TRUE),
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
         new CSRecognizerInfo(new CharsetRecog_UTF_16_BE(), TRUE),
-#endif
         new CSRecognizerInfo(new CharsetRecog_UTF_16_LE(), TRUE),
-#if !UCONFIG_ONLY_HTML_CONVERSION
         new CSRecognizerInfo(new CharsetRecog_UTF_32_BE(), TRUE),
         new CSRecognizerInfo(new CharsetRecog_UTF_32_LE(), TRUE),
-#endif
 
         new CSRecognizerInfo(new CharsetRecog_8859_1(), TRUE),
         new CSRecognizerInfo(new CharsetRecog_8859_2(), TRUE),
diff --git a/icu4c/source/i18n/csrucode.cpp b/icu4c/source/i18n/csrucode.cpp
index 27384163b56..59f2dbe284c 100644
--- a/icu4c/source/i18n/csrucode.cpp
+++ b/icu4c/source/i18n/csrucode.cpp
@@ -21,7 +21,6 @@ CharsetRecog_Unicode::~CharsetRecog_Unicode()
     // nothing to do
 }
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
 CharsetRecog_UTF_16_BE::~CharsetRecog_UTF_16_BE()
 {
     // nothing to do
@@ -31,7 +30,6 @@ const char *CharsetRecog_UTF_16_BE::getName() const
 {
     return "UTF-16BE";
 }
-#endif
 
 // UTF-16 confidence calculation. Very simple minded, but better than nothing.
 //   Any 8 bit non-control characters bump the confidence up. These have a zero high byte,
@@ -54,7 +52,6 @@ static int32_t adjustConfidence(UChar codeUnit, int32_t confidence) {
 }
 
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
 UBool CharsetRecog_UTF_16_BE::match(InputText* textIn, CharsetMatch *results) const
 {
     const uint8_t *input = textIn->fRawInput;
@@ -79,7 +76,6 @@ UBool CharsetRecog_UTF_16_BE::match(InputText* textIn, CharsetMatch *results) co
     results->set(textIn, this, confidence);
     return (confidence > 0);
 }
-#endif
 
 CharsetRecog_UTF_16_LE::~CharsetRecog_UTF_16_LE()
 {
@@ -119,7 +115,6 @@ UBool CharsetRecog_UTF_16_LE::match(InputText* textIn, CharsetMatch *results) co
     return (confidence > 0);
 }
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
 CharsetRecog_UTF_32::~CharsetRecog_UTF_32()
 {
     // nothing to do
@@ -199,7 +194,6 @@ int32_t CharsetRecog_UTF_32_LE::getChar(const uint8_t *input, int32_t index) con
     return input[index + 3] << 24 | input[index + 2] << 16 |
            input[index + 1] <<  8 | input[index + 0];
 }
-#endif
 
 U_NAMESPACE_END
 #endif
diff --git a/icu4c/source/i18n/csrucode.h b/icu4c/source/i18n/csrucode.h
index 4d67e6042cc..cef35447fb7 100644
--- a/icu4c/source/i18n/csrucode.h
+++ b/icu4c/source/i18n/csrucode.h
@@ -42,7 +42,6 @@ public:
 };
 
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
 class CharsetRecog_UTF_16_BE : public CharsetRecog_Unicode
 {
 public:
@@ -53,7 +52,6 @@ public:
 
     UBool match(InputText* textIn, CharsetMatch *results) const;
 };
-#endif
 
 class CharsetRecog_UTF_16_LE : public CharsetRecog_Unicode
 {
@@ -66,7 +64,6 @@ public:
     UBool match(InputText* textIn, CharsetMatch *results) const;
 };
 
-#if !UCONFIG_ONLY_HTML_CONVERSION
 class CharsetRecog_UTF_32 : public CharsetRecog_Unicode
 {
 protected:
@@ -104,7 +101,6 @@ public:
 
     const char* getName() const;
 };
-#endif
 
 U_NAMESPACE_END