diff --git a/String/Capitalize.js b/String/Capitalize.js
new file mode 100644
index 0000000000..1a3c9bae6f
--- /dev/null
+++ b/String/Capitalize.js
@@ -0,0 +1,17 @@
+/**
+ * @function capitalize
+ * @description Will convert the first character of the string to uppercase
+ * @param {String} str - The input string
+ * @returns {String} Capitalized string
+ * @example capitalize("hello") => Hello
+ * @example capitalize("_ello") => _ello
+ */
+const capitalize = (str) => {
+  if (typeof str !== 'string') {
+    throw new Error('Argument should be string')
+  }
+
+  return str[0].toLocaleUpperCase() + str.slice(1)
+}
+
+export default capitalize
diff --git a/String/test/Capitalize.test.js b/String/test/Capitalize.test.js
new file mode 100644
index 0000000000..67aa0f76ae
--- /dev/null
+++ b/String/test/Capitalize.test.js
@@ -0,0 +1,9 @@
+import capitalize from '../Capitalize'
+
+describe('Testing the Capitalize function', () => {
+  it('returns capitalized strings', () => {
+    expect(capitalize('hello')).toBe('Hello')
+    expect(capitalize('HELLO world')).toBe('HELLO world')
+    expect(capitalize('_ello')).toBe('_ello')
+  })
+})
diff --git a/package-lock.json b/package-lock.json
index 2c86fde142..0cd4eee840 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3094,9 +3094,9 @@
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+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001522.tgz",
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+        },
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+          "url": "https://github.com/sponsors/ai"
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@@ -4405,20 +4409,6 @@
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-      "dev": true,
-      "hasInstallScript": true,
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@@ -10613,9 +10603,9 @@
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+      "version": "1.0.30001522",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001522.tgz",
+      "integrity": "sha512-TKiyTVZxJGhsTszLuzb+6vUZSjVOAhClszBr2Ta2k9IwtNBT/4dzmL6aywt0HCgEZlmwJzXJd8yNiob6HgwTRg=="
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@@ -11566,13 +11556,6 @@
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