diff --git a/.github/actions/spell-check/expect.txt b/.github/actions/spell-check/expect.txt
index 0cfc383559..87296b7409 100644
--- a/.github/actions/spell-check/expect.txt
+++ b/.github/actions/spell-check/expect.txt
@@ -672,6 +672,7 @@ imageresizerinput
 imageresizersettings
 imagingdevices
 ime
+imperialounce
 inetcpl
 Infobar
 INFOEXAMPLE
@@ -1672,6 +1673,7 @@ USERDATA
 Userenv
 USESHOWWINDOW
 USESTDHANDLES
+usounce
 USRDLL
 UType
 uuidv
diff --git a/src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.UnitConverter/InputInterpreter.cs b/src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.UnitConverter/InputInterpreter.cs
index aadab74821..3a36b3b175 100644
--- a/src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.UnitConverter/InputInterpreter.cs
+++ b/src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.UnitConverter/InputInterpreter.cs
@@ -237,6 +237,43 @@ namespace Community.PowerToys.Run.Plugin.UnitConverter
             }
         }
 
+        /// <summary>
+        /// Choose "UsOunce" or "ImperialOunce" according to current culture when the input contains "o.z", "o.z.", "oz" or "ounce".
+        /// </summary>
+        public static void OunceHandler(ref string[] split, CultureInfo culture)
+        {
+            HashSet<string> britishCultureNames = new HashSet<string>() { "en-AI", "en-VG", "en-GB", "en-KY", "en-MS", "en-AG", "en-DM", "en-GD", "en-KN", "en-LC", "en-VC", "en-IE", "en-GY", "en-AE" };
+            if (string.Equals(split[1], "o.z", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[1], "ounce", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[1], "o.z.", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[1], "oz", StringComparison.OrdinalIgnoreCase))
+            {
+                if (britishCultureNames.Contains(culture.Name))
+                {
+                    split[1] = "ImperialOunce";
+                }
+                else
+                {
+                    split[1] = "UsOunce";
+                }
+            }
+
+            if (string.Equals(split[3], "o.z", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[3], "ounce", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[3], "o.z.", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(split[3], "oz", StringComparison.OrdinalIgnoreCase))
+            {
+                if (britishCultureNames.Contains(culture.Name))
+                {
+                    split[3] = "ImperialOunce";
+                }
+                else
+                {
+                    split[3] = "UsOunce";
+                }
+            }
+        }
+
         public static ConvertModel Parse(Query query)
         {
             string[] split = query.Search.Split(' ');
@@ -257,6 +294,7 @@ namespace Community.PowerToys.Run.Plugin.UnitConverter
             InputInterpreter.FeetToFt(ref split);
             InputInterpreter.KPHHandler(ref split);
             InputInterpreter.GallonHandler(ref split, CultureInfo.CurrentCulture);
+            InputInterpreter.OunceHandler(ref split, CultureInfo.CurrentCulture);
             if (!double.TryParse(split[0], out double value))
             {
                 return null;