diff --git a/src/core/CCInt.ml b/src/core/CCInt.ml
index 12a0d013..3d1cc631 100644
--- a/src/core/CCInt.ml
+++ b/src/core/CCInt.ml
@@ -70,3 +70,9 @@ let random_range i j st = i + random (j-i) st
 
 let pp buf = Printf.bprintf buf "%d"
 let print fmt = Format.pp_print_int fmt
+
+let to_string = string_of_int
+
+let of_string s =
+  try Some (int_of_string s)
+  with _ -> None
diff --git a/src/core/CCInt.mli b/src/core/CCInt.mli
index 9ad57969..c2b32fad 100644
--- a/src/core/CCInt.mli
+++ b/src/core/CCInt.mli
@@ -56,3 +56,10 @@ val random_range : int -> int -> t random_gen
 
 val pp : t printer
 val print : t formatter
+
+val to_string : t -> string
+(** @since NEXT_RELEASE *)
+
+val of_string : string -> t option
+(** @since NEXT_RELEASE *)
+