diff --git a/src/wuttjamaican/app.py b/src/wuttjamaican/app.py
index 044331f..3b7ef86 100644
--- a/src/wuttjamaican/app.py
+++ b/src/wuttjamaican/app.py
@@ -962,8 +962,8 @@ class AppHandler:  # pylint: disable=too-many-public-methods
             value = int(value)
             if empty_zero and value == 0:
                 return ""
-            return str(value)
-        return str(value).rstrip("0")
+            return f"{value:,}"
+        return f"{value:,}".rstrip("0")
 
     def render_time_ago(self, value):
         """
diff --git a/tests/test_app.py b/tests/test_app.py
index cd2236b..7bdebf9 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -672,6 +672,14 @@ app_title = WuttaTest
         self.assertEqual(self.app.render_quantity(0), "0")
         self.assertEqual(self.app.render_quantity(0, empty_zero=True), "")
 
+        # has thousands separator
+        value = 1234
+        self.assertEqual(self.app.render_quantity(value), "1,234")
+        value = decimal.Decimal("1234.567")
+        self.assertEqual(self.app.render_quantity(value), "1,234.567")
+        value = decimal.Decimal("1234.567000")
+        self.assertEqual(self.app.render_quantity(value), "1,234.567")
+
     def test_render_time_ago(self):
         with patch.object(mod, "humanize") as humanize:
             humanize.naturaltime.return_value = "now"