diff --git a/src/utils/tensor.cuh b/src/utils/tensor.cuh
index 0acba92c..488f656a 100644
--- a/src/utils/tensor.cuh
+++ b/src/utils/tensor.cuh
@@ -40,6 +40,12 @@ namespace uammd{
 
     VECATTR real trace(){return xx+yy+zz;}
 
+    VECATTR tensor3 transpose(){
+      return tensor3(xx,yx,zx,
+                     xy,yy,zy,
+                     xz,yz,zz);
+    }
+
   };