diff --git a/src/main/java/io/lenses/sql/udf/multiplyByTwo.java b/src/main/java/io/lenses/sql/udf/multiplyByTwo.java
new file mode 100644
index 0000000..0878d3d
--- /dev/null
+++ b/src/main/java/io/lenses/sql/udf/multiplyByTwo.java
@@ -0,0 +1,41 @@
+package io.lenses.sql.udf;
+
+import io.lenses.sql.udf.datatype.DataType;
+import io.lenses.sql.udf.value.*;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+
+public class multiplyByTwo implements UserDefinedFunction1 {
+    @Override
+    public DataType typeMapping(DataType dataType) throws UdfException {
+        if (dataType.isNumber())
+            return dataType;
+        else
+            throw new UdfException("Invalid input type received. Expecting a Integer but received:" + dataType.name);
+    }
+
+    @Override
+    public Value evaluate(Value value) throws UdfException {
+        if (value instanceof BigDecimalValue) {
+            return new BigDecimalValue(value.toBigDecimalValue().get().multiply(new BigDecimal(2)));
+        } else if (value instanceof BigIntValue) {
+            return new BigIntValue(value.toBigIntValue().get().multiply(BigInteger.valueOf(2)));
+        } else if (value instanceof DoubleValue) {
+            return new DoubleValue(value.toDoubleValue().get() * 2);
+        } else if (value instanceof FloatValue) {
+            return new FloatValue(value.toFloatValue().get() * 2);
+        } else if (value instanceof IntValue) {
+            return new IntValue(value.toIntValue().get() * 2);
+        } else if (value instanceof LongValue) {
+            return new LongValue(value.toLongValue().get() * 2);
+        }
+        throw new UdfRuntimeException("Expecting a number but found " + value.getDataType().name + ".");
+    }
+
+    @Override
+    public String name() {
+        return "multiplyByTwo";
+    }
+}
\ No newline at end of file