diff --git a/bin/test-all.js b/bin/test-all.js
index fcdcdb6..624b248 100644
--- a/bin/test-all.js
+++ b/bin/test-all.js
@@ -31,6 +31,7 @@ require('../modules/matches/test');
 require('../modules/pairs/test');
 require('../modules/property/test');
 require('../modules/values/test');
+require('../modules/capitalize/test');
 require('../modules/escape/test');
 require('../modules/includes/test');
 require('../modules/to-camel-case/test');
diff --git a/bin/test-server.js b/bin/test-server.js
index fb28068..78e2358 100644
--- a/bin/test-server.js
+++ b/bin/test-server.js
@@ -27,6 +27,7 @@ require('../modules/matches/test');
 require('../modules/pairs/test');
 require('../modules/property/test');
 require('../modules/values/test');
+require('../modules/capitalize/test');
 require('../modules/escape/test');
 require('../modules/includes/test');
 require('../modules/to-camel-case/test');
diff --git a/modules.json b/modules.json
index eb9035c..2d5cd71 100644
--- a/modules.json
+++ b/modules.json
@@ -138,6 +138,10 @@
     }
   ],
   "strings": [
+    {
+      "name": "capitalize",
+      "license": "amp"
+    },
     {
       "name": "escape",
       "license": "underscore"
diff --git a/modules/capitalize/LICENSE.md b/modules/capitalize/LICENSE.md
new file mode 100644
index 0000000..c044826
--- /dev/null
+++ b/modules/capitalize/LICENSE.md
@@ -0,0 +1,20 @@
+Copyright © 2014 &yet, LLC and AmpersandJS contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/modules/capitalize/README.md b/modules/capitalize/README.md
new file mode 100644
index 0000000..36fc4e0
--- /dev/null
+++ b/modules/capitalize/README.md
@@ -0,0 +1,5 @@
+# amp-capitalize
+
+See [the documentation](http://amp.ampersandjs.com#amp-capitalize) for more info.
+
+Part of the [amp project](http://amp.ampersandjs.com#amp-capitalize), initially created by [@HenrikJoreteg](http://twitter.com/henrikjoreteg).
\ No newline at end of file
diff --git a/modules/capitalize/capitalize.js b/modules/capitalize/capitalize.js
new file mode 100644
index 0000000..1786a3b
--- /dev/null
+++ b/modules/capitalize/capitalize.js
@@ -0,0 +1,7 @@
+var isString = require('amp-is-string');
+
+
+module.exports = function capitalize(str, uppercase) {
+    if (!isString(str)) return '';
+    return str.charAt(0)[uppercase !== false ? 'toUpperCase' : 'toLowerCase']() + str.slice(1);
+};
diff --git a/modules/capitalize/doc.md b/modules/capitalize/doc.md
new file mode 100644
index 0000000..e8cb537
--- /dev/null
+++ b/modules/capitalize/doc.md
@@ -0,0 +1 @@
+Capitalizes first letter of a string. If the optinal second argument is `false` it will lowercase the first character instead of uppercasing it.
diff --git a/modules/capitalize/example.js b/modules/capitalize/example.js
new file mode 100644
index 0000000..88100a6
--- /dev/null
+++ b/modules/capitalize/example.js
@@ -0,0 +1,9 @@
+var capitalize = require('amp-capitalize');
+
+capitalize('hi'); //=> 'Hi'
+
+// does not trim or anything
+capitalize(' hi'); //=> ' hi'
+
+// pass `false` to force to lowercase instead
+capitalize('Hi', false); //=> 'hi'
diff --git a/modules/capitalize/package.json b/modules/capitalize/package.json
new file mode 100644
index 0000000..cb5ccd5
--- /dev/null
+++ b/modules/capitalize/package.json
@@ -0,0 +1,32 @@
+{
+  "name": "amp-capitalize",
+  "description": "capitalize function part of http://amp.ampersandjs.com.",
+  "version": "1.0.0",
+  "author": "Henrik Joreteg <henrik@andyet.net>",
+  "amp": {
+    "size": {
+      "original": "38 B",
+      "minified": "7 B"
+    },
+    "internal": false
+  },
+  "bugs": "https://github.com/ampersandjs/amp/issues",
+  "devDependencies": {
+    "tape": "^3.0.3"
+  },
+  "homepage": "http://amp.ampersandjs.com/#amp-capitalize",
+  "keywords": [
+    "amp",
+    "util",
+    "strings"
+  ],
+  "license": "MIT",
+  "main": "capitalize.js",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/ampersandjs/amp"
+  },
+  "scripts": {
+    "test": "node test.js"
+  }
+}
diff --git a/modules/capitalize/sig.js b/modules/capitalize/sig.js
new file mode 100644
index 0000000..8b2c73a
--- /dev/null
+++ b/modules/capitalize/sig.js
@@ -0,0 +1 @@
+capitalize(string, [upperCase]);
diff --git a/modules/capitalize/test.js b/modules/capitalize/test.js
new file mode 100644
index 0000000..530b176
--- /dev/null
+++ b/modules/capitalize/test.js
@@ -0,0 +1,11 @@
+var test = require('tape');
+var capitalize = require('./capitalize');
+
+
+test('amp-capitalize', function (t) {
+    t.equal(capitalize('hi'), 'Hi', 'basic functionality');
+    t.equal(capitalize('hi there'), 'Hi there', 'only does first');
+    t.equal(capitalize(' hi'), ' hi', 'does not trim whitespace');
+    t.equal(capitalize('Hi', false), 'hi', 'can be used to lowercase also');
+    t.end();
+});
diff --git a/modules/to-camel-case/to-camel-case.js b/modules/to-camel-case/to-camel-case.js
index 626cc5c..5b159bb 100644
--- a/modules/to-camel-case/to-camel-case.js
+++ b/modules/to-camel-case/to-camel-case.js
@@ -1,13 +1,13 @@
 var isString = require('amp-is-string');
+var capitalize = require('amp-capitalize');
 var re1 = /([\W_\-]+\S?)/g;
 var re2 = /[\W_]/g;
 
 
 module.exports = function toCamelCase(string, capitalizeFirst) {
     if (!isString(string)) return '';
-    var replaced = string.replace(re1, function (match) {
+    var result = string.replace(re1, function (match) {
         return match.replace(re2, '').toUpperCase();
     });
-    var first = replaced.slice(0, 1)[capitalizeFirst ? 'toUpperCase' : 'toLowerCase']();
-    return first + replaced.slice(1);
+    return capitalize(result, !!capitalizeFirst);
 };