diff --git a/index.html b/index.html
index d864754..cba17fb 100644
--- a/index.html
+++ b/index.html
@@ -49,6 +49,16 @@
                         Replace:
                         <input type="text" name="replace" id="replace" />
                     </div>
+                    <div class="optionLine">
+                        Case:
+                        <select id="caseComboBox">
+                            <option value="unchanged">UnChanGEd</option>
+                            <option value="uppercase">TO UPPER</option>
+                            <option value="lowercase">to lower</option>
+                            <option value="capitalize_words">Capitalize Words</option>
+                            <option value="capitalize_first_letter">Capitalize first letter</option>
+                        </select>
+                    </div>
                     <div class="optionTitle">
                         Extension Options:
                     </div>
diff --git a/model.js b/model.js
index d800ce3..b4d815b 100644
--- a/model.js
+++ b/model.js
@@ -23,6 +23,21 @@ function model(callback) {
         return typeof f === "function";
     }
 
+    // private -----------------------------------------------------------------
+    function capitalizeFirstLetter(text) {
+        text = text.toLowerCase();
+
+        return text.replace(/^./, function (first) {
+            return first.toUpperCase();
+        });
+    }
+
+    // private -----------------------------------------------------------------
+    function capitalizeEachWord(text) {
+        // http://stackoverflow.com/questions/15150168/
+        return text.replace(/[^\s]+/g, capitalizeFirstLetter);
+    }
+
     // private -----------------------------------------------------------------
     function calculateName(name) {
         var stem;       // up to last period
@@ -49,6 +64,22 @@ function model(callback) {
         if (m_settings.usePostfix) {
             stem = stem + m_settings.postfix;
         }
+        switch (m_settings.changeCase) {
+        case "unchanged":
+            break;
+        case "uppercase":
+            stem = stem.toUpperCase();
+            break;
+        case "lowercase":
+            stem = stem.toLowerCase();
+            break;
+        case "capitalize_words":
+            stem = capitalizeEachWord(stem);
+            break;
+        case "capitalize_first_letter":
+            stem = capitalizeFirstLetter(stem);
+            break;
+        }
 
         // extension modifications
         if (m_settings.lowercaseExtensions) {
@@ -163,6 +194,7 @@ function model(callback) {
             prefix: m_settings.prefix,
             usePostfix: m_settings.usePostfix,
             postfix: m_settings.postfix,
+            changeCase: m_settings.changeCase,
             lowercaseExtensions: m_settings.lowercaseExtensions,
             uppercaseExtensions: m_settings.uppercaseExtensions,
             haveCustomExtensions: m_settings.haveCustomExtensions,
@@ -354,6 +386,12 @@ function model(callback) {
         refresh();
     }
 
+    // private -----------------------------------------------------------------
+    function setChangeCase(changeCase) {
+        m_settings.changeCase = changeCase;
+        refresh();
+    }
+
     // public ------------------------------------------------------------------
     function executeRename() {
         m_fileInfos.forEach(function (fileInfo) {
@@ -423,6 +461,7 @@ function model(callback) {
         initializeSetting("usePostfix", true);
         initializeSetting("prefix", "");
         initializeSetting("postfix", "");
+        initializeSetting("changeCase", "unchanged");
         initializeSetting("lowercaseExtensions", false);
         initializeSetting("uppercaseExtensions", false);
         initializeSetting("haveCustomExtensions", false);
@@ -454,6 +493,7 @@ function model(callback) {
         setPrefix: setPrefix,
         setPostfix: setPostfix,
         setFindReplace: setFindReplace,
+        setChangeCase: setChangeCase,
         executeRename: executeRename,
         setSelection: setSelection,
         toggleSelection: toggleSelection,
diff --git a/settings.js b/settings.js
index d3a9246..15103ea 100644
--- a/settings.js
+++ b/settings.js
@@ -31,6 +31,7 @@ function settings(onLoad) {
         "prefix",
         "postfix",
         "findReplace",
+        "changeCase",
         "lowercaseExtensions",
         "uppercaseExtensions",
         "haveCustomExtensions",
diff --git a/view.js b/view.js
index 8f4a132..03bed69 100644
--- a/view.js
+++ b/view.js
@@ -23,6 +23,7 @@
     var m_postfixTextInput = document.querySelector("#postfix");
     var m_findTextInput = document.querySelector("#find");
     var m_replaceTextInput = document.querySelector("#replace");
+    var m_caseComboBox = document.querySelector("#caseComboBox");
     var m_lowerExtCheckbox = document.querySelector("#lowerExtCheckbox");
     var m_upperExtCheckbox = document.querySelector("#upperExtCheckbox");
     var m_extensionToCheckbox = document.querySelector("#extensionToCheckbox");
@@ -107,6 +108,7 @@
             m_findTextInput.value = options.findAndReplaces[0].find;
             m_replaceTextInput.value = options.findAndReplaces[0].replace;
         }
+        m_caseComboBox.value = options.changeCase;
         m_lowerExtCheckbox.checked = options.lowercaseExtensions;
         m_upperExtCheckbox.checked = options.uppercaseExtensions;
         m_extensionToCheckbox.checked = options.haveCustomExtensions;
@@ -251,6 +253,10 @@
         m_findTextInput.onchange = storeFindReplace;
         m_replaceTextInput.onchange = storeFindReplace;
 
+        m_caseComboBox.onchange = function () {
+            m_model.setChangeCase(m_caseComboBox.value);
+        };
+
         m_lowerExtCheckbox.addEventListener("click", storeExtensionOptions);
         m_upperExtCheckbox.addEventListener("click", storeExtensionOptions);
         m_extensionToCheckbox.addEventListener("click", storeExtensionOptions);