diff --git a/common/script/count.js b/common/script/count.js
index cbb7fe3b47..14c41bee36 100644
--- a/common/script/count.js
+++ b/common/script/count.js
@@ -26,7 +26,21 @@ function mountMasterProgress(mounts) {
   return count;
 }
 
+function remainingGearInSet(userGear, set) {
+  var gear = _.filter(content.gear.flat, function(item) {
+    var setMatches = item.klass === set;
+    var hasItem = _.has(userGear, item.key);
+
+    return setMatches && !hasItem;
+  });
+
+  var count = _.size(gear);
+
+  return count;
+}
+
 module.exports = {
   beastMasterProgress: beastMasterProgress,
-  mountMasterProgress: mountMasterProgress
+  mountMasterProgress: mountMasterProgress,
+  remainingGearInSet: remainingGearInSet
 };
diff --git a/test/common/count.js b/test/common/count.js
index 44fc14e6ae..f0a25a771d 100644
--- a/test/common/count.js
+++ b/test/common/count.js
@@ -84,4 +84,32 @@ describe('count', function() {
       expect(mountMasterTotal).to.eql(1);
     });
   });
+
+  describe('remainingGearInSet', function() {
+    it('counts remaining gear based on set', function() {
+      var gear = {
+        'weapon_wizard_0':true,
+        'weapon_wizard_1':true,
+        'weapon_warrior_0':true,
+        'weapon_warrior_1':true,
+        'weapon_armor_0':true,
+        'weapon_armor_1':true
+      };
+
+      var armoireCount = count.remainingGearInSet(gear, 'warrior');
+      expect(armoireCount).to.eql(20);
+    });
+
+    it('includes previously owned items in count', function() {
+      var gear = {
+        'weapon_warrior_0':false,
+        'weapon_warrior_1':false,
+        'weapon_armor_0':true,
+        'weapon_armor_1':true
+      };
+
+      var armoireCount = count.remainingGearInSet(gear, 'warrior');
+      expect(armoireCount).to.eql(20);
+    });
+  });
 });