diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js
index b2eb621c..f8d9fe6d 100755
--- a/src/core/config/OperationConfig.js
+++ b/src/core/config/OperationConfig.js
@@ -2301,6 +2301,11 @@ const OperationConfig = {
                 name: "Output units",
                 type: "option",
                 value: DateTime.UNITS
+            },
+            {
+                name: "Input format",
+                type: "option",
+                value: DateTime.FILETIME_FORMATS
             }
         ]
     },
@@ -2314,6 +2319,11 @@ const OperationConfig = {
                 name: "Input units",
                 type: "option",
                 value: DateTime.UNITS
+            },
+            {
+                name: "Output format",
+                type: "option",
+                value: DateTime.FILETIME_FORMATS
             }
         ]
     },
diff --git a/src/core/operations/DateTime.js b/src/core/operations/DateTime.js
index 5262ecc4..b665a2b5 100755
--- a/src/core/operations/DateTime.js
+++ b/src/core/operations/DateTime.js
@@ -89,8 +89,17 @@ const DateTime = {
      * @returns {string}
      */
     runFromFiletimeToUnix: function(input, args) {
-        let units = args[0];
-        input = new BigInteger(input).subtract(new BigInteger("116444736000000000"));
+        let units = args[0],
+            format = args[1];
+
+        if (format === "Hex") {
+            input = new BigInteger(input, 16);
+        } else {
+            input = new BigInteger(input);
+        }
+
+        input = input.subtract(new BigInteger("116444736000000000"));
+
         if (units === "Seconds (s)"){
             input = input.divide(new BigInteger("10000000"));
         } else if (units === "Milliseconds (ms)") {
@@ -102,6 +111,7 @@ const DateTime = {
         } else {
             throw "Unrecognised unit";
         }
+
         return input.toString();
     },
 
@@ -115,8 +125,11 @@ const DateTime = {
      * @returns {string}
      */
     runToFiletimeFromUnix: function(input, args) {
-        let units = args[0];
+        let units = args[0],
+            format = args[1];
+
         input = new BigInteger(input);
+
         if (units === "Seconds (s)"){
             input = input.multiply(new BigInteger("10000000"));
         } else if (units === "Milliseconds (ms)") {
@@ -128,10 +141,24 @@ const DateTime = {
         } else {
             throw "Unrecognised unit";
         }
-        return input.add(new BigInteger("116444736000000000")).toString();
+
+        input = input.add(new BigInteger("116444736000000000"));
+
+        if (format === "Hex"){
+            return input.toString(16);
+        } else {
+            return input.toString();
+        }
     },
 
 
+    /**
+     * @constant
+     * @default
+     */
+    FILETIME_FORMATS: ["Decimal", "Hex"],
+
+
     /**
      * @constant
      * @default
diff --git a/test/tests/operations/DateTime.js b/test/tests/operations/DateTime.js
index 7ee445ff..f8226ac6 100644
--- a/test/tests/operations/DateTime.js
+++ b/test/tests/operations/DateTime.js
@@ -16,7 +16,7 @@ TestRegister.addTests([
         recipeConfig: [
             {
                 op: "Windows Filetime to UNIX Timestamp",
-                args: ["Nanoseconds (ns)"],
+                args: ["Nanoseconds (ns)", "Decimal"],
             },
         ],
     },
@@ -27,7 +27,7 @@ TestRegister.addTests([
         recipeConfig: [
             {
                 op: "UNIX Timestamp to Windows Filetime",
-                args: ["Nanoseconds (ns)"],
+                args: ["Nanoseconds (ns)", "Decimal"],
             },
         ],
     },