diff --git a/dict.c b/dict.c
index 988a2a53..64b1ab92 100644
--- a/dict.c
+++ b/dict.c
@@ -65,7 +65,7 @@ pic_dict_del(pic_state *pic, struct pic_dict *dict, pic_sym key)
 }
 
 static pic_value
-pic_dict_dict(pic_state *pic)
+pic_dict_make_dictionary(pic_state *pic)
 {
   struct pic_dict *dict;
 
@@ -77,7 +77,26 @@ pic_dict_dict(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_p(pic_state *pic)
+pic_dict_dictionary(pic_state *pic)
+{
+  struct pic_dict *dict;
+  pic_value *argv;
+  size_t argc, i;
+
+  pic_get_args(pic, "*", &argc, &argv);
+
+  dict = pic_make_dict(pic);
+
+  for (i = 0; i < argc; i += 2) {
+    pic_assert_type(pic, argv[i], sym);
+    pic_dict_set(pic, dict, pic_sym(argv[i]), argv[i+1]);
+  }
+
+  return pic_obj_value(dict);
+}
+
+static pic_value
+pic_dict_dictionary_p(pic_state *pic)
 {
   pic_value obj;
 
@@ -87,7 +106,7 @@ pic_dict_dict_p(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_ref(pic_state *pic)
+pic_dict_dictionary_ref(pic_state *pic)
 {
   struct pic_dict *dict;
   pic_sym key;
@@ -102,7 +121,7 @@ pic_dict_dict_ref(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_set(pic_state *pic)
+pic_dict_dictionary_set(pic_state *pic)
 {
   struct pic_dict *dict;
   pic_sym key;
@@ -116,7 +135,7 @@ pic_dict_dict_set(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_del(pic_state *pic)
+pic_dict_dictionary_del(pic_state *pic)
 {
   struct pic_dict *dict;
   pic_sym key;
@@ -129,7 +148,7 @@ pic_dict_dict_del(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_size(pic_state *pic)
+pic_dict_dictionary_size(pic_state *pic)
 {
   struct pic_dict *dict;
 
@@ -139,7 +158,7 @@ pic_dict_dict_size(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_map(pic_state *pic)
+pic_dict_dictionary_map(pic_state *pic)
 {
   struct pic_proc *proc;
   struct pic_dict *dict;
@@ -158,7 +177,7 @@ pic_dict_dict_map(pic_state *pic)
 }
 
 static pic_value
-pic_dict_dict_for_each(pic_state *pic)
+pic_dict_dictionary_for_each(pic_state *pic)
 {
   struct pic_proc *proc;
   struct pic_dict *dict;
@@ -180,15 +199,92 @@ pic_dict_dict_for_each(pic_state *pic)
   return pic_none_value();
 }
 
+static pic_value
+pic_dict_dictionary_to_alist(pic_state *pic)
+{
+  struct pic_dict *dict;
+  pic_value item, alist = pic_nil_value();
+  xh_iter it;
+
+  pic_get_args(pic, "d", &dict);
+
+  xh_begin(&it, &dict->hash);
+  while (xh_next(&it)) {
+    item = pic_cons(pic, pic_sym_value(xh_key(it.e, pic_sym)), xh_val(it.e, pic_value));
+    pic_push(pic, item, alist);
+  }
+
+  return pic_reverse(pic, alist);
+}
+
+static pic_value
+pic_dict_alist_to_dictionary(pic_state *pic)
+{
+  struct pic_dict *dict;
+  pic_value alist, e;
+
+  pic_get_args(pic, "o", &alist);
+
+  dict = pic_make_dict(pic);
+
+  pic_for_each (e, pic_reverse(pic, alist)) {
+    pic_assert_type(pic, pic_car(pic, e), sym);
+    pic_dict_set(pic, dict, pic_sym(pic_car(pic, e)), pic_cdr(pic, e));
+  }
+
+  return pic_obj_value(dict);
+}
+
+static pic_value
+pic_dict_dictionary_to_plist(pic_state *pic)
+{
+  struct pic_dict *dict;
+  pic_value plist = pic_nil_value();
+  xh_iter it;
+
+  pic_get_args(pic, "d", &dict);
+
+  xh_begin(&it, &dict->hash);
+  while (xh_next(&it)) {
+    pic_push(pic, xh_val(it.e, pic_value), plist);
+    pic_push(pic, pic_sym_value(xh_key(it.e, pic_sym)), plist);
+  }
+
+  return pic_reverse(pic, plist);
+}
+
+static pic_value
+pic_dict_plist_to_dictionary(pic_state *pic)
+{
+  struct pic_dict *dict;
+  pic_value plist, e;
+
+  pic_get_args(pic, "o", &plist);
+
+  dict = pic_make_dict(pic);
+
+  for (e = pic_reverse(pic, plist); ! pic_nil_p(e); e = pic_cddr(pic, e)) {
+    pic_assert_type(pic, pic_car(pic, e), sym);
+    pic_dict_set(pic, dict, pic_sym(pic_car(pic, e)), pic_cadr(pic, e));
+  }
+
+  return pic_obj_value(dict);
+}
+
 void
 pic_init_dict(pic_state *pic)
 {
-  pic_defun(pic, "make-dictionary", pic_dict_dict);
-  pic_defun(pic, "dictionary?", pic_dict_dict_p);
-  pic_defun(pic, "dictionary-ref", pic_dict_dict_ref);
-  pic_defun(pic, "dictionary-set!", pic_dict_dict_set);
-  pic_defun(pic, "dictionary-delete", pic_dict_dict_del);
-  pic_defun(pic, "dictionary-size", pic_dict_dict_size);
-  pic_defun(pic, "dictionary-map", pic_dict_dict_map);
-  pic_defun(pic, "dictionary-for-each", pic_dict_dict_for_each);
+  pic_defun(pic, "make-dictionary", pic_dict_make_dictionary);
+  pic_defun(pic, "dictionary?", pic_dict_dictionary_p);
+  pic_defun(pic, "dictionary", pic_dict_dictionary);
+  pic_defun(pic, "dictionary-ref", pic_dict_dictionary_ref);
+  pic_defun(pic, "dictionary-set!", pic_dict_dictionary_set);
+  pic_defun(pic, "dictionary-delete", pic_dict_dictionary_del);
+  pic_defun(pic, "dictionary-size", pic_dict_dictionary_size);
+  pic_defun(pic, "dictionary-map", pic_dict_dictionary_map);
+  pic_defun(pic, "dictionary-for-each", pic_dict_dictionary_for_each);
+  pic_defun(pic, "dictionary->alist", pic_dict_dictionary_to_alist);
+  pic_defun(pic, "alist->dictionary", pic_dict_alist_to_dictionary);
+  pic_defun(pic, "dictionary->plist", pic_dict_dictionary_to_plist);
+  pic_defun(pic, "plist->dictionary", pic_dict_plist_to_dictionary);
 }