diff --git a/lib/fog/libvirt/requests/compute/list_volumes.rb b/lib/fog/libvirt/requests/compute/list_volumes.rb
index 5eef3d24a..01751f734 100644
--- a/lib/fog/libvirt/requests/compute/list_volumes.rb
+++ b/lib/fog/libvirt/requests/compute/list_volumes.rb
@@ -34,11 +34,15 @@ module Fog
             :path        => vol.path,
             :name        => vol.name,
             :format_type => format_type,
-            :allocation  => vol.info.allocation,
-            :capacity    => vol.info.capacity,
+            :allocation  => bytes_to_gb(vol.info.allocation),
+            :capacity    => bytes_to_gb(vol.info.capacity),
           }
         end
 
+        def bytes_to_gb bytes
+          bytes / 1024**3
+        end
+
         def raw_volumes
           client.list_storage_pools.each do |pool_name|
             pool = client.lookup_storage_pool_by_name(pool_name)