diff --git a/Maths/DigitalRoot.js b/Maths/DigitalRoot.js
new file mode 100644
index 0000000000..2e6703e76d
--- /dev/null
+++ b/Maths/DigitalRoot.js
@@ -0,0 +1,34 @@
+const digitalRoot = (num) => {
+ /**
+ * Calculates the digital root of a number in constant time.
+ * @param {number} num - The number to compute the digital root for.
+ * @returns {number} The digital root of the given number.
+ *
+ * @example digitalRoot(456) // returns 6
+ * @example digitalRoot(-999) // returns 9
+ * @example digitalRoot(0) // returns 0
+ */
+ if (num < 0) num = -num;
+ return num === 0 ? num : 1 + ((num - 1) % 9);
+};
+/*------------------------------------------------------------------------------------*/
+
+const digitalRootRecursive = (num) => {
+ /**
+ * Calculates the digital root of a number using recursion.
+ * @param {number} num - The number to compute the digital root for.
+ * @returns {number} The digital root of the given number.
+ *
+ * @example digitalRootRecursive(456) // returns 6
+ * @example digitalRootrecursive(999) // returns 9
+ * @example digitalRootRecursive(0) // returns 0
+ */
+ if (num < 0) num = -num; // Handle negative input by converting to positive
+ if (num < 10) return num; // Base case for single-digit number
+
+ // Recursive case: sum digits and continue to reduce
+ const sum = (num % 10) + digitalRootRecursive(Math.floor(num / 10));
+ return digitalRootRecursive(sum); // Call digitalRoot recursively to reduce to single digit
+};
+
+export { digitalRoot, digitalRootRecursive };
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