diff --git a/config.h b/config.h
index 87e9ffe..5e00c55 100644
--- a/config.h
+++ b/config.h
@@ -50,7 +50,9 @@ static const Rule rules[] = {
 	/* class      instance    title       tags mask     isfloating   monitor */
 	{ "Gimp",     NULL,       NULL,       0,            1,           -1 },
 	{ "firefox",  NULL,       NULL,       2,            0,           -1 },
-	{ "URxvt",    "cal",       NULL,       0,            1,           -1 },
+    // make calculator floating
+	{ "SpeedCrunch",    NULL,      NULL,       0,            1,           -1 },
+	{ "URxvt",  NULL,       "urxvt-f",       0,            1,           -1 },
 };
 
 /* layout(s) */
@@ -81,6 +83,7 @@ static const Layout layouts[] = {
 static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
 static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_norm_bg, "-nf", col_norm_fg, "-sb", col_sel_bg, "-sf", col_sel_fg, NULL };
 static const char *termcmd[]  = { "urxvt256c", NULL };
+static const char *floattermcmd[]  = { "urxvt256c", "-name", "urxvt-f", NULL };
 static const char *lockcmd[]  = { "slock", NULL };
 static const char *prtscrcmd[]  = { "flameshot", "gui", NULL};
 static const char *vol_up[]  = { "volume_up.sh", NULL};
@@ -94,6 +97,7 @@ static Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
 	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
+	{ MODKEY|ControlMask,           XK_Return, spawn,          {.v = floattermcmd } },
 	{ MODKEY,                       XK_b,      togglebar,      {0} },
 	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
 	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },