diff --git a/src/adql/translator/ADQLTranslator.java b/src/adql/translator/ADQLTranslator.java
index d52c9999efd485cd6602e0493e3f8157c151fec1..2455ace569b9fcddfeed1804cea4af6eebacc35c 100644
--- a/src/adql/translator/ADQLTranslator.java
+++ b/src/adql/translator/ADQLTranslator.java
@@ -51,6 +51,7 @@ import adql.query.operand.WrappedOperand;
 import adql.query.operand.function.ADQLFunction;
 import adql.query.operand.function.MathFunction;
 import adql.query.operand.function.SQLFunction;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.UserDefinedFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
@@ -151,6 +152,9 @@ public interface ADQLTranslator {
 	/** @since 2.0 */
 	public String translate(LowerFunction fct) throws TranslationException;
 
+	/** @since 2.0 */
+	public String translate(UnitConversionFunction fct) throws TranslationException;
+
 	/* ***** GEOMETRICAL FUNCTIONS ***** */
 	public String translate(GeometryFunction fct) throws TranslationException;
 
diff --git a/src/adql/translator/JDBCTranslator.java b/src/adql/translator/JDBCTranslator.java
index 71b07f5914627beb2770da0822ad7bfae7839512..99fcd3c54c25ebcc5396e8731285cc00b530c881 100644
--- a/src/adql/translator/JDBCTranslator.java
+++ b/src/adql/translator/JDBCTranslator.java
@@ -63,6 +63,7 @@ import adql.query.operand.function.ADQLFunction;
 import adql.query.operand.function.MathFunction;
 import adql.query.operand.function.SQLFunction;
 import adql.query.operand.function.SQLFunctionType;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.UserDefinedFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
@@ -836,6 +837,8 @@ public abstract class JDBCTranslator implements ADQLTranslator {
 			return translate((UserDefinedFunction)fct);
 		else if (fct instanceof LowerFunction)
 			return translate((LowerFunction)fct);
+		else if (fct instanceof UnitConversionFunction)
+			return translate((UnitConversionFunction)fct);
 		else
 			return getDefaultADQLFunction(fct);
 	}
diff --git a/src/adql/translator/MySQLTranslator.java b/src/adql/translator/MySQLTranslator.java
index d9d1664e42be8edbde91eb1836e9e99caa4966e3..75a2438057ee66b657fe5c3d022c750b35df821c 100644
--- a/src/adql/translator/MySQLTranslator.java
+++ b/src/adql/translator/MySQLTranslator.java
@@ -29,6 +29,7 @@ import adql.query.constraint.Comparison;
 import adql.query.operand.ADQLOperand;
 import adql.query.operand.Concatenation;
 import adql.query.operand.Operation;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
 import adql.query.operand.function.geometry.CentroidFunction;
@@ -155,7 +156,7 @@ public class MySQLTranslator extends JDBCTranslator {
 		switch(comp.getOperator()) {
 			case ILIKE:
 			case NOTILIKE:
-				throw new TranslationException("Translation of ILIKE impossible! This is not supported in MySQL.");
+				throw new TranslationException("Translation of ILIKE impossible! This is not supported natively in MySQL.");
 			default:
 				return translate(comp.getLeftOperand()) + " " + comp.getOperator().toADQL() + " " + translate(comp.getRightOperand());
 		}
@@ -177,6 +178,11 @@ public class MySQLTranslator extends JDBCTranslator {
 		return translated.toString();
 	}
 
+	@Override
+	public String translate(final UnitConversionFunction fct) throws TranslationException {
+		return getDefaultADQLFunction(fct);
+	}
+
 	/* ********************************************************************** */
 	/* *                                                                    * */
 	/* * TYPE MANAGEMENT                                                    * */
diff --git a/src/adql/translator/PostgreSQLTranslator.java b/src/adql/translator/PostgreSQLTranslator.java
index f762e5e7d143a482cd938a37bd1b194b842aefba..26687a97334152ba5eab5c1ce90e731642c203eb 100644
--- a/src/adql/translator/PostgreSQLTranslator.java
+++ b/src/adql/translator/PostgreSQLTranslator.java
@@ -30,6 +30,7 @@ import adql.query.operand.OperationType;
 import adql.query.operand.StringConstant;
 import adql.query.operand.function.ADQLFunction;
 import adql.query.operand.function.MathFunction;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
 import adql.query.operand.function.geometry.CentroidFunction;
@@ -175,6 +176,11 @@ public class PostgreSQLTranslator extends JDBCTranslator {
 		}
 	}
 
+	@Override
+	public String translate(final UnitConversionFunction fct) throws TranslationException {
+		return getDefaultADQLFunction(fct);
+	}
+
 	@Override
 	public String translate(ExtractCoord extractCoord) throws TranslationException {
 		return getDefaultADQLFunction(extractCoord);
diff --git a/src/adql/translator/SQLServerTranslator.java b/src/adql/translator/SQLServerTranslator.java
index e52880e93346cf6969adde238e3e522a58064e8a..1f6606128339fa8116e408c62a5a0ab7ecc140be 100644
--- a/src/adql/translator/SQLServerTranslator.java
+++ b/src/adql/translator/SQLServerTranslator.java
@@ -41,6 +41,7 @@ import adql.query.operand.ADQLColumn;
 import adql.query.operand.ADQLOperand;
 import adql.query.operand.Concatenation;
 import adql.query.operand.function.MathFunction;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
 import adql.query.operand.function.geometry.CentroidFunction;
@@ -194,12 +195,17 @@ public class SQLServerTranslator extends JDBCTranslator {
 		switch(comp.getOperator()) {
 			case ILIKE:
 			case NOTILIKE:
-				throw new TranslationException("Translation of ILIKE impossible! This is not supported in MS-SQL Server.");
+				throw new TranslationException("Translation of ILIKE impossible! This is not supported natively in MS-SQL Server.");
 			default:
 				return translate(comp.getLeftOperand()) + " " + comp.getOperator().toADQL() + " " + translate(comp.getRightOperand());
 		}
 	}
 
+	@Override
+	public String translate(final UnitConversionFunction fct) throws TranslationException {
+		return getDefaultADQLFunction(fct);
+	}
+
 	@Override
 	public String translate(Concatenation concat) throws TranslationException {
 		StringBuffer translated = new StringBuffer();
diff --git a/test/adql/translator/TestJDBCTranslator.java b/test/adql/translator/TestJDBCTranslator.java
index acf049942f9e041a48c68b53846ec5209fe362dc..5a24c3f38daca3c96523a39f99d549242c3933c1 100644
--- a/test/adql/translator/TestJDBCTranslator.java
+++ b/test/adql/translator/TestJDBCTranslator.java
@@ -20,6 +20,7 @@ import adql.query.operand.NumericConstant;
 import adql.query.operand.Operation;
 import adql.query.operand.StringConstant;
 import adql.query.operand.function.DefaultUDF;
+import adql.query.operand.function.UnitConversionFunction;
 import adql.query.operand.function.geometry.AreaFunction;
 import adql.query.operand.function.geometry.BoxFunction;
 import adql.query.operand.function.geometry.CentroidFunction;
@@ -173,6 +174,11 @@ public class TestJDBCTranslator {
 
 	public final static class AJDBCTranslator extends JDBCTranslator {
 
+		@Override
+		public String translate(UnitConversionFunction fct) throws TranslationException {
+			return null;
+		}
+
 		@Override
 		public String translate(ExtractCoord extractCoord) throws TranslationException {
 			return null;