diff --git a/.changeset/olive-cloths-beam.md b/.changeset/olive-cloths-beam.md
new file mode 100644
index 000000000..760963e48
--- /dev/null
+++ b/.changeset/olive-cloths-beam.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/form-core': patch
+---
+
+optimize makePathArray util function
diff --git a/packages/form-core/src/utils.ts b/packages/form-core/src/utils.ts
index 71a6ddb69..071b87427 100644
--- a/packages/form-core/src/utils.ts
+++ b/packages/form-core/src/utils.ts
@@ -141,17 +141,6 @@ export function deleteBy(obj: any, _path: any) {
   return doDelete(obj)
 }
 
-const reLineOfOnlyDigits = /^(\d+)$/gm
-// the second dot must be in a lookahead or the engine
-// will skip subsequent numbers (like foo.0.1.)
-const reDigitsBetweenDots = /\.(\d+)(?=\.)/gm
-const reStartWithDigitThenDot = /^(\d+)\./gm
-const reDotWithDigitsToEnd = /\.(\d+$)/gm
-const reMultipleDots = /\.{2,}/gm
-
-const intPrefix = '__int__'
-const intReplace = `${intPrefix}$1`
-
 /**
  * @private
  */
@@ -164,31 +153,16 @@ export function makePathArray(str: string | Array<string | number>) {
     throw new Error('Path must be a string.')
   }
 
-  return (
-    str
-      // Leading `[` may lead to wrong parsing down the line
-      // (Example: '[0][1]' should be '0.1', not '.0.1')
-      .replace(/(^\[)|]/gm, '')
-      .replace(/\[/g, '.')
-      .replace(reLineOfOnlyDigits, intReplace)
-      .replace(reDigitsBetweenDots, `.${intReplace}.`)
-      .replace(reStartWithDigitThenDot, `${intReplace}.`)
-      .replace(reDotWithDigitsToEnd, `.${intReplace}`)
-      .replace(reMultipleDots, '.')
-      .split('.')
-      .map((d) => {
-        if (d.startsWith(intPrefix)) {
-          const numStr = d.substring(intPrefix.length)
-          const num = parseInt(numStr, 10)
-
-          if (String(num) === numStr) {
-            return num
-          }
-          return numStr
-        }
-        return d
-      })
-  )
+  // Leading `[` may lead to wrong parsing (e.g. '[0][1]' → '0.1', not '.0.1')
+  return str
+    .replace(/(^\[)|]/g, '')
+    .replace(/\[/g, '.')
+    .replace(/\.{2,}/g, '.')
+    .split('.')
+    .map((segment) => {
+      const num = parseInt(segment, 10)
+      return String(num) === segment ? num : segment
+    })
 }
 
 /**