diff --git a/source/Ox/js/String.js b/source/Ox/js/String.js
index f071c72a..21a9aaef 100644
--- a/source/Ox/js/String.js
+++ b/source/Ox/js/String.js
@@ -104,6 +104,23 @@ Ox.pad = function(string, length, padding) {
         : (string + padding).slice(0, length);
 };
 
+/*@
+Ox.parseDuration <f> Takes a formatted duration, returns seconds
+    > Ox.parseDuration('01:02:03')
+    3723
+    > Ox.parseDuration('3')
+    3
+    > Ox.parseDuration('2:')
+    120
+    > Ox.parseDuration('1::')
+    3600
+@*/
+Ox.parseDuration = function(string) {
+    return string.split(':').reverse().slice(0, 3).reduce(function(p, c, i) {
+        return p + (parseFloat(c) || 0) * Math.pow(60, i);
+    }, 0);
+};
+
 /*@
 Ox.parsePath <f> Returns the components of a path
     (str) -> <o> Path