diff --git a/src/IDF/Project.php b/src/IDF/Project.php
index 7c0f37b..1c5b1ef 100644
--- a/src/IDF/Project.php
+++ b/src/IDF/Project.php
@@ -349,6 +349,24 @@ class IDF_Project extends Pluf_Model
         return new Pluf_Template_ContextVars($tags);
     }
 
+    /**
+     * Get the repository size.
+     *
+     * @param bool Force to skip the cache (false)
+     * @return int Size in byte or -1 if not available
+     */
+    public function getRepositorySize($force=false)
+    {
+        $last_eval = $this->getConf()->getVal('repository_size_check_date', 0);
+        if (!$force and $last_eval > time()-86400) {
+            return $this->getConf()->getVal('repository_size', -1);
+        }
+        $scm = IDF_Scm::get($this);
+        $this->getConf()->setVal('repository_size', $scm->getRepositorySize());
+        $this->getConf()->setVal('repository_size_check_date', time());
+        return $this->getConf()->getVal('repository_size', -1);
+    }
+
     /**
      * Get the access url to the repository.
      *
diff --git a/src/IDF/Scm.php b/src/IDF/Scm.php
index c027fbc..9a8cbac 100644
--- a/src/IDF/Scm.php
+++ b/src/IDF/Scm.php
@@ -87,6 +87,16 @@ class IDF_Scm
         return call_user_func(array($scms[$scm], 'factory'), $project);
     }
 
+    /**
+     * Return the size of the repository in bytes.
+     *
+     * @return int Size in byte, -1 if the size cannot be evaluated.
+     */
+    public function getRepositorySize()
+    {
+        return -1;
+    }
+
     /**
      * Returns the URL of the git daemon.
      *
diff --git a/src/IDF/Scm/Git.php b/src/IDF/Scm/Git.php
index 71a4714..58792cc 100644
--- a/src/IDF/Scm/Git.php
+++ b/src/IDF/Scm/Git.php
@@ -41,6 +41,14 @@ class IDF_Scm_Git extends IDF_Scm
         $this->project = $project;
     }
 
+    public function getRepositorySize()
+    {
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -bs '
+            .escapeshellarg($this->repo);
+        $out = split(' ', shell_exec($cmd), 2);
+        return (int) $out[0];
+    }
+
     public function isAvailable()
     {
         try {
diff --git a/src/IDF/Scm/Mercurial.php b/src/IDF/Scm/Mercurial.php
index 5861e97..998e909 100644
--- a/src/IDF/Scm/Mercurial.php
+++ b/src/IDF/Scm/Mercurial.php
@@ -33,6 +33,14 @@ class IDF_Scm_Mercurial extends IDF_Scm
         $this->project = $project;
     }
 
+    public function getRepositorySize()
+    {
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -bs '
+            .escapeshellarg($this->repo);
+        $out = split(' ', shell_exec($cmd), 2);
+        return (int) $out[0];
+    }
+
     public static function factory($project)
     {
         $rep = sprintf(Pluf::f('mercurial_repositories'), $project->shortname);
diff --git a/src/IDF/Scm/Svn.php b/src/IDF/Scm/Svn.php
index c9e1737..00ab6d2 100644
--- a/src/IDF/Scm/Svn.php
+++ b/src/IDF/Scm/Svn.php
@@ -51,6 +51,17 @@ class IDF_Scm_Svn extends IDF_Scm
         return true;
     }
 
+    public function getRepositorySize()
+    {
+        if (strpos($this->repo, 'file://') !== 0) {
+            return -1;
+        }
+        $cmd = Pluf::f('idf_exec_cmd_prefix', '').'du -bs '
+            .escapeshellarg(substr($this->repo, 7));
+        $out = split(' ', shell_exec($cmd), 2);
+        return (int) $out[0];
+    }
+
     /**
      * Given the string describing the author from the log find the
      * author in the database.
diff --git a/src/IDF/Views/Project.php b/src/IDF/Views/Project.php
index 409faf5..60710d5 100644
--- a/src/IDF/Views/Project.php
+++ b/src/IDF/Views/Project.php
@@ -510,6 +510,7 @@ class IDF_Views_Project
                                                      'remote_svn' => $remote_svn,
                                                      'repository_access' => $prj->getRemoteAccessUrl(),
                                                      'repository_type' => $repository_type,
+                                                     'repository_size' => $prj->getRepositorySize(),
                                                      'page_title' => $title,
                                                      'form' => $form,
                                                      ),
diff --git a/src/IDF/templates/idf/admin/source.html b/src/IDF/templates/idf/admin/source.html
index 27612ab..5fba9ef 100644
--- a/src/IDF/templates/idf/admin/source.html
+++ b/src/IDF/templates/idf/admin/source.html
@@ -20,7 +20,12 @@
 <th>{trans 'Repository access:'}</th>
 <td>{$repository_access}
 </td>
-</tr>{if $remote_svn}
+</tr>{if $repository_size != -1}
+<tr>
+<th>{trans 'Repository size:'}</th>
+<td>{$repository_size|size}
+</td>
+</tr>{/if}{if $remote_svn}
 <tr>
 <th>{$form.f.svn_username.labelTag}:</th>
 <td>{if $form.f.svn_username.errors}{$form.f.svn_username.fieldErrors}{/if}