diff --git a/src/core/lib/Decimal.mjs b/src/core/lib/Decimal.mjs
index a140fd4e6d..3d81695eda 100644
--- a/src/core/lib/Decimal.mjs
+++ b/src/core/lib/Decimal.mjs
@@ -7,6 +7,7 @@
  */
 
 import Utils from "../Utils.mjs";
+import {DELIM_OPTIONS} from "./Delim.mjs";
 
 
 /**
@@ -24,14 +25,20 @@ import Utils from "../Utils.mjs";
  * fromDecimal("10:20:30", "Colon");
  */
 export function fromDecimal(data, delim="Auto") {
-    delim = Utils.charRep(delim);
-    const output = [];
-    let byteStr = data.split(delim);
-    if (byteStr[byteStr.length-1] === "")
-        byteStr = byteStr.slice(0, byteStr.length-1);
+    const delimRegex = delim === "Auto" ? /[^\d-]+/ : Utils.regexRep(delim);
+    let byteStr = data.split(delimRegex);
+
+    byteStr = byteStr.filter(str => str !== "");
 
+    const output = [];
     for (let i = 0; i < byteStr.length; i++) {
         output[i] = parseInt(byteStr[i], 10);
     }
     return output;
 }
+
+
+/**
+ * From Decimal delimiters.
+ */
+export const FROM_DECIMAL_DELIM_OPTIONS = [...DELIM_OPTIONS, "Auto"];
diff --git a/src/core/operations/FromDecimal.mjs b/src/core/operations/FromDecimal.mjs
index f98931d625..83353074a6 100644
--- a/src/core/operations/FromDecimal.mjs
+++ b/src/core/operations/FromDecimal.mjs
@@ -5,8 +5,7 @@
  */
 
 import Operation from "../Operation.mjs";
-import {DELIM_OPTIONS} from "../lib/Delim.mjs";
-import {fromDecimal} from "../lib/Decimal.mjs";
+import {fromDecimal, FROM_DECIMAL_DELIM_OPTIONS} from "../lib/Decimal.mjs";
 
 /**
  * From Decimal operation
@@ -28,7 +27,7 @@ class FromDecimal extends Operation {
             {
                 "name": "Delimiter",
                 "type": "option",
-                "value": DELIM_OPTIONS
+                "value": FROM_DECIMAL_DELIM_OPTIONS
             },
             {
                 "name": "Support signed values",
diff --git a/tests/operations/tests/FromDecimal.mjs b/tests/operations/tests/FromDecimal.mjs
index dfc440ec53..a8711840fc 100644
--- a/tests/operations/tests/FromDecimal.mjs
+++ b/tests/operations/tests/FromDecimal.mjs
@@ -30,4 +30,59 @@ TestRegister.addTests([
             },
         ],
     },
+    {
+        name: "From Decimal with Auto delimiter (space)",
+        input: "72 101 108 108 111",
+        expectedOutput: "Hello",
+        recipeConfig: [
+            {
+                op: "From Decimal",
+                args: ["Auto", false]
+            },
+        ],
+    },
+    {
+        name: "From Decimal with Auto delimiter (comma)",
+        input: "72,101,108,108,111",
+        expectedOutput: "Hello",
+        recipeConfig: [
+            {
+                op: "From Decimal",
+                args: ["Auto", false]
+            },
+        ],
+    },
+    {
+        name: "From Decimal with Auto delimiter (mixed)",
+        input: "72, 101 : 108; 108\t111",
+        expectedOutput: "Hello",
+        recipeConfig: [
+            {
+                op: "From Decimal",
+                args: ["Auto", false]
+            },
+        ],
+    },
+    {
+        name: "From Decimal with Auto delimiter (newline)",
+        input: "72\n101\n108\n108\n111",
+        expectedOutput: "Hello",
+        recipeConfig: [
+            {
+                op: "From Decimal",
+                args: ["Auto", false]
+            },
+        ],
+    },
+    {
+        name: "From Decimal with Auto delimiter and signed values",
+        input: "-130 -140 -152 -151 115 33 0 -1",
+        expectedOutput: "~this!\u0000\u00ff",
+        recipeConfig: [
+            {
+                op: "From Decimal",
+                args: ["Auto", true]
+            },
+        ],
+    },
 ]);