diff --git a/chrono/timespan.cpp b/chrono/timespan.cpp
index ddb40ef..697a37d 100644
--- a/chrono/timespan.cpp
+++ b/chrono/timespan.cpp
@@ -157,6 +157,12 @@ void TimeSpan::toString(string &result, TimeSpanOutputFormat format, bool fullSe
             }
         }
         break;
+    case TimeSpanOutputFormat::TotalSeconds:
+        if (fullSeconds) {
+            s << setprecision(0);
+        }
+        s << positive.totalSeconds();
+        break;
     }
     result = s.str();
 }
diff --git a/chrono/timespan.h b/chrono/timespan.h
index 791d3fa..aa36928 100644
--- a/chrono/timespan.h
+++ b/chrono/timespan.h
@@ -21,7 +21,8 @@ class DateTime;
  */
 enum class TimeSpanOutputFormat {
     Normal, /**< the normal form of specifing a time interval: hh:mm:ss */
-    WithMeasures /**< measures are used, eg.: 34 d 5 h 10 min 7 s 31 ms */
+    WithMeasures, /**< measures are used, eg.: 34 d 5 h 10 min 7 s 31 ms */
+    TotalSeconds, /**< total seconds (as returned by totalSeconds()), eg. 2304.342 */
 };
 
 class CPP_UTILITIES_EXPORT TimeSpan {