diff --git a/CMakeLists_files.cmake b/CMakeLists_files.cmake
index 2823eb61b..6587dd26b 100644
--- a/CMakeLists_files.cmake
+++ b/CMakeLists_files.cmake
@@ -509,6 +509,7 @@ list( APPEND PUBLIC_HEADER_FILES
       opm/common/utility/parameters/ParameterStrings.hpp
       opm/common/utility/parameters/ParameterTools.hpp
       opm/common/utility/numeric/calculateCellVol.hpp
+      opm/common/utility/String.hpp
       opm/common/utility/TimeService.hpp
 )
 if(ENABLE_ECL_INPUT)
@@ -518,7 +519,6 @@ if(ENABLE_ECL_INPUT)
        opm/parser/eclipse/Utility/Stringview.hpp
        opm/parser/eclipse/Utility/Functional.hpp
        opm/parser/eclipse/Utility/Typetools.hpp
-       opm/parser/eclipse/Utility/String.hpp
        opm/parser/eclipse/Generator/KeywordGenerator.hpp
        opm/parser/eclipse/Generator/KeywordLoader.hpp
        opm/parser/eclipse/Units/UnitSystem.hpp
diff --git a/opm/parser/eclipse/Utility/String.hpp b/opm/common/utility/String.hpp
similarity index 100%
rename from opm/parser/eclipse/Utility/String.hpp
rename to opm/common/utility/String.hpp
diff --git a/src/opm/io/eclipse/rst/group.cpp b/src/opm/io/eclipse/rst/group.cpp
index c2c1ab76c..0289e13c0 100644
--- a/src/opm/io/eclipse/rst/group.cpp
+++ b/src/opm/io/eclipse/rst/group.cpp
@@ -16,7 +16,7 @@
   along with OPM.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include <opm/io/eclipse/rst/header.hpp>
 #include <opm/io/eclipse/rst/group.hpp>
diff --git a/src/opm/io/eclipse/rst/well.cpp b/src/opm/io/eclipse/rst/well.cpp
index 0814dd44d..0dda3c9e2 100644
--- a/src/opm/io/eclipse/rst/well.cpp
+++ b/src/opm/io/eclipse/rst/well.cpp
@@ -16,7 +16,7 @@
   along with OPM.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include <opm/io/eclipse/rst/header.hpp>
 #include <opm/io/eclipse/rst/connection.hpp>
diff --git a/src/opm/parser/eclipse/Deck/DeckItem.cpp b/src/opm/parser/eclipse/Deck/DeckItem.cpp
index 84d3826cb..e96d606f7 100644
--- a/src/opm/parser/eclipse/Deck/DeckItem.cpp
+++ b/src/opm/parser/eclipse/Deck/DeckItem.cpp
@@ -20,7 +20,7 @@
 #include <opm/parser/eclipse/Deck/DeckOutput.hpp>
 #include <opm/parser/eclipse/Deck/DeckItem.hpp>
 #include <opm/parser/eclipse/Units/Dimension.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include <algorithm>
 #include <string>
diff --git a/src/opm/parser/eclipse/EclipseState/EndpointScaling.cpp b/src/opm/parser/eclipse/EclipseState/EndpointScaling.cpp
index 56c8150fe..dac7dc744 100644
--- a/src/opm/parser/eclipse/EclipseState/EndpointScaling.cpp
+++ b/src/opm/parser/eclipse/EclipseState/EndpointScaling.cpp
@@ -1,6 +1,6 @@
 #include <opm/parser/eclipse/Deck/Deck.hpp>
 #include <opm/parser/eclipse/EclipseState/EndpointScaling.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 namespace Opm {
 
diff --git a/src/opm/parser/eclipse/EclipseState/Grid/PinchMode.cpp b/src/opm/parser/eclipse/EclipseState/Grid/PinchMode.cpp
index 3bd4c14f7..e3d87d855 100644
--- a/src/opm/parser/eclipse/EclipseState/Grid/PinchMode.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Grid/PinchMode.cpp
@@ -18,14 +18,14 @@
 */
 
 #include <opm/parser/eclipse/EclipseState/Grid/PinchMode.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include <stdexcept>
 
 namespace Opm {
 
     namespace PinchMode {
-        
+
         const std::string PinchMode2String(const ModeEnum enumValue) {
             std::string stringValue;
             switch (enumValue) {
@@ -56,7 +56,7 @@ namespace Opm {
                 std::string msg = "Unsupported pinchout mode " + s;
                 throw std::invalid_argument(msg);
             }
-            
+
             return mode;
         }
     }
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/Action/PyAction.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/Action/PyAction.cpp
index 3d72e762b..538176b2b 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/Action/PyAction.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/Action/PyAction.cpp
@@ -25,7 +25,7 @@ namespace py = pybind11;
 #endif
 
 
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 #include <opm/common/utility/FileSystem.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/Action/PyAction.hpp>
 
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
index 6aabd0a6e..27389f282 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
@@ -26,9 +26,9 @@
 
 #include <opm/common/OpmLog/LogUtil.hpp>
 #include <opm/common/utility/numeric/cmp.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include <opm/parser/eclipse/Python/Python.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
 #include <opm/parser/eclipse/Deck/DeckItem.hpp>
 #include <opm/parser/eclipse/Deck/DeckKeyword.hpp>
 #include <opm/parser/eclipse/Deck/DeckRecord.hpp>
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/TimeMap.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/TimeMap.cpp
index 46294576e..046080b3b 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/TimeMap.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/TimeMap.cpp
@@ -32,7 +32,7 @@
 #include <opm/parser/eclipse/Deck/DeckKeyword.hpp>
 #include <opm/parser/eclipse/Deck/DeckRecord.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/TimeMap.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 
 constexpr const std::time_t invalid_time = -1;
diff --git a/src/opm/parser/eclipse/EclipseState/checkDeck.cpp b/src/opm/parser/eclipse/EclipseState/checkDeck.cpp
index 9662a12ed..56740616b 100644
--- a/src/opm/parser/eclipse/EclipseState/checkDeck.cpp
+++ b/src/opm/parser/eclipse/EclipseState/checkDeck.cpp
@@ -21,13 +21,12 @@
 #include <opm/common/OpmLog/OpmLog.hpp>
 #include <opm/common/OpmLog/LogUtil.hpp>
 
-#include <opm/parser/eclipse/Utility/String.hpp>
 #include <opm/parser/eclipse/Deck/DeckKeyword.hpp>
 #include <opm/parser/eclipse/Deck/DeckSection.hpp>
 #include <opm/parser/eclipse/Parser/Parser.hpp>
 #include <opm/parser/eclipse/Parser/ParseContext.hpp>
 #include <opm/parser/eclipse/Parser/ErrorGuard.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 namespace Opm {
 bool checkDeck( const Deck& deck, const Parser& parser, const ParseContext& parseContext, ErrorGuard& errorGuard, size_t enabledChecks) {
diff --git a/src/opm/parser/eclipse/Parser/ParseContext.cpp b/src/opm/parser/eclipse/Parser/ParseContext.cpp
index 118d57e41..73d39bc4b 100644
--- a/src/opm/parser/eclipse/Parser/ParseContext.cpp
+++ b/src/opm/parser/eclipse/Parser/ParseContext.cpp
@@ -25,7 +25,7 @@
 #include <opm/parser/eclipse/Parser/ErrorGuard.hpp>
 #include <opm/parser/eclipse/Parser/InputErrorAction.hpp>
 #include <opm/parser/eclipse/Parser/ParseContext.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 namespace Opm {
 
diff --git a/src/opm/parser/eclipse/Parser/Parser.cpp b/src/opm/parser/eclipse/Parser/Parser.cpp
index 096c8ca1f..b2e0dc1ca 100644
--- a/src/opm/parser/eclipse/Parser/Parser.cpp
+++ b/src/opm/parser/eclipse/Parser/Parser.cpp
@@ -49,7 +49,7 @@
 #include <opm/parser/eclipse/Parser/ParserKeyword.hpp>
 #include <opm/parser/eclipse/Parser/ParserRecord.hpp>
 #include <opm/parser/eclipse/Utility/Stringview.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include "raw/RawConsts.hpp"
 #include "raw/RawEnums.hpp"
diff --git a/src/opm/parser/eclipse/Parser/raw/RawKeyword.cpp b/src/opm/parser/eclipse/Parser/raw/RawKeyword.cpp
index 7bc4e86b5..c969e82e1 100644
--- a/src/opm/parser/eclipse/Parser/raw/RawKeyword.cpp
+++ b/src/opm/parser/eclipse/Parser/raw/RawKeyword.cpp
@@ -19,7 +19,7 @@
 #include <stdexcept>
 
 #include <opm/parser/eclipse/Parser/ParserKeyword.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 #include "RawConsts.hpp"
 #include "RawKeyword.hpp"
diff --git a/src/opm/parser/eclipse/Units/UnitSystem.cpp b/src/opm/parser/eclipse/Units/UnitSystem.cpp
index 68814e682..1b5401905 100644
--- a/src/opm/parser/eclipse/Units/UnitSystem.cpp
+++ b/src/opm/parser/eclipse/Units/UnitSystem.cpp
@@ -21,7 +21,7 @@
 #include <iostream>
 #include <stdexcept>
 
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 #include <opm/parser/eclipse/Units/Dimension.hpp>
 #include <opm/parser/eclipse/Units/Units.hpp>
 #include <opm/parser/eclipse/Units/UnitSystem.hpp>
diff --git a/tests/parser/StringTests.cpp b/tests/parser/StringTests.cpp
index de7af7b5b..a79caf787 100644
--- a/tests/parser/StringTests.cpp
+++ b/tests/parser/StringTests.cpp
@@ -2,7 +2,7 @@
 
 #include <boost/test/unit_test.hpp>
 
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 #include <opm/parser/eclipse/Utility/Stringview.hpp>
 
 using namespace Opm;
diff --git a/tests/test_PaddedOutputString.cpp b/tests/test_PaddedOutputString.cpp
index 5f089f354..aa10175f5 100644
--- a/tests/test_PaddedOutputString.cpp
+++ b/tests/test_PaddedOutputString.cpp
@@ -3,7 +3,7 @@
 #include <boost/test/unit_test.hpp>
 
 #include <opm/io/eclipse/PaddedOutputString.hpp>
-#include <opm/parser/eclipse/Utility/String.hpp>
+#include <opm/common/utility/String.hpp>
 
 // Convenience alias.
 template <std::size_t N>