diff --git a/init.el b/init.el
index 9a60584..0219b38 100644
--- a/init.el
+++ b/init.el
@@ -666,6 +666,11 @@ COMMAND and COMINT are like `compile'."
       (save-excursion (sly))))
   (setq inferior-lisp-program "/usr/bin/sbcl"))
 
+;; calc
+(use-package calc
+  :ensure nil
+  :bind ("C-c m" . calc))
+
 ;; vterm
 (use-package vterm
   :hook (vterm-mode . with-editor-export-editor)