diff --git a/src/monger/convertion.clj b/src/monger/convertion.clj
new file mode 100644
index 0000000..36c2d6f
--- /dev/null
+++ b/src/monger/convertion.clj
@@ -0,0 +1,23 @@
+(ns monger.convertion
+  (:import (com.mongodb DBObject BasicDBObject)
+           (java.util Map List)))
+
+(defprotocol ConvertToDBObject
+  (to-db-object [input] "Converts given piece of Clojure data to BasicDBObject MongoDB Java driver uses"))
+
+(extend-protocol ConvertToDBObject
+  nil
+  (to-db-object [input]
+    input)
+  Object
+  (to-db-object [input]
+    input)
+  Map
+  (to-db-object [input]
+    {}))
+          
+
+
+
+(defprotocol ConvertFromDBObject
+  (from-db-object [input] "Converts given DBObject instance to a piece of Clojure data"))
diff --git a/test/monger/test/convertion.clj b/test/monger/test/convertion.clj
new file mode 100644
index 0000000..606f5a2
--- /dev/null
+++ b/test/monger/test/convertion.clj
@@ -0,0 +1,30 @@
+(ns monger.test.convertion
+  (:require [monger core collection convertion])
+  (:use [clojure.test]))
+
+(deftest convert-nil-to-dbobject
+  (let [input  nil
+        output (monger.convertion/to-db-object input)]
+    (is (nil? output))))
+
+(deftest convert-integer-to-dbobject
+  (let [input  1
+        output (monger.convertion/to-db-object input)]
+    (is (= input output))))
+
+(deftest convert-float-to-dbobject
+  (let [input  11.12
+        output (monger.convertion/to-db-object input)]
+    (is (= input output))))
+
+(deftest convert-string-to-dbobject
+  (let [input  "MongoDB"
+        output (monger.convertion/to-db-object input)]
+    (is (= input output))))
+
+
+(deftest convert-map-to-dbobject
+  (let [input  { :int 1, :string "Mongo", :float 22.23 }
+        output (monger.convertion/to-db-object input)]
+    (is (= 1 (.get output "int")))
+    ))