diff --git a/lib/sidekiq/web.rb b/lib/sidekiq/web.rb
index 5155a468..299aa2e0 100644
--- a/lib/sidekiq/web.rb
+++ b/lib/sidekiq/web.rb
@@ -31,6 +31,7 @@ module Sidekiq
 
   class Web < Sinatra::Base
     include Sidekiq::Paginator
+    include ActionView::Helpers::NumberHelper
 
     dir = File.expand_path(File.dirname(__FILE__) + "/../../web")
     set :views,  "#{dir}/views"
diff --git a/web/views/_summary.slim b/web/views/_summary.slim
index 96b281de..2ab50461 100644
--- a/web/views/_summary.slim
+++ b/web/views/_summary.slim
@@ -1,8 +1,8 @@
 .hero-unit
   h1 Sidekiq is #{current_status}
-  p Processed: #{processed}
-  p Failed: #{failed}
-  p Busy Workers: #{workers.size}
-  p Scheduled: #{zcard('schedule')}
-  p Retries Pending: #{zcard('retry')}
-  p Queue Backlog: #{backlog}
+  p Processed: #{number_with_delimiter(processed)}
+  p Failed: #{number_with_delimiter(failed)}
+  p Busy Workers: #{number_with_delimiter(workers.size)}
+  p Scheduled: #{number_with_delimiter(zcard('schedule'))}
+  p Retries Pending: #{number_with_delimiter(zcard('retry'))}
+  p Queue Backlog: #{number_with_delimiter(backlog)}
diff --git a/web/views/queues.slim b/web/views/queues.slim
index 1cc7b01b..022e07f8 100644
--- a/web/views/queues.slim
+++ b/web/views/queues.slim
@@ -10,7 +10,7 @@ h1 Queues
       tr
         td
           a href="#{root_path}queues/#{queue}" #{queue}
-        td= size
+        td= number_with_delimiter(size)
         td
           form action="#{root_path}queues/#{queue}" method="post"
             input.btn.btn-danger type="submit" name="delete" value="Delete" data-confirm="Are you sure you want to delete the #{queue} queue?"