diff -uraN a/config.def.h b/config.def.h
--- a/config.def.h	2019-02-02 15:55:28.000000000 +0300
+++ b/config.def.h	2020-02-18 03:33:58.212113667 +0300
@@ -70,6 +70,9 @@
 	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
 	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
 	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
+	{ MODKEY|ShiftMask,             XK_h,      setcfact,       {.f = +0.25} },
+	{ MODKEY|ShiftMask,             XK_l,      setcfact,       {.f = -0.25} },
+	{ MODKEY|ShiftMask,             XK_o,      setcfact,       {.f =  0.00} },
 	{ MODKEY,                       XK_Return, zoom,           {0} },
 	{ MODKEY,                       XK_Tab,    view,           {0} },
 	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },
diff -uraN a/dwm.c b/dwm.c
--- a/dwm.c	2019-02-02 15:55:28.000000000 +0300
+++ b/dwm.c	2020-02-18 03:33:58.213447007 +0300
@@ -87,6 +87,7 @@
 struct Client {
 	char name[256];
 	float mina, maxa;
+	float cfact;
 	int x, y, w, h;
 	int oldx, oldy, oldw, oldh;
 	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
@@ -200,6 +201,7 @@
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
 static void setlayout(const Arg *arg);
+static void setcfact(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setup(void);
 static void seturgent(Client *c, int urg);
@@ -1029,6 +1031,7 @@
 	c->w = c->oldw = wa->width;
 	c->h = c->oldh = wa->height;
 	c->oldbw = wa->border_width;
+	c->cfact = 1.0;
 
 	updatetitle(c);
 	if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
@@ -1511,6 +1514,23 @@
 		drawbar(selmon);
 }
 
+void setcfact(const Arg *arg) {
+	float f;
+	Client *c;
+
+	c = selmon->sel;
+
+	if(!arg || !c || !selmon->lt[selmon->sellt]->arrange)
+		return;
+	f = arg->f + c->cfact;
+	if(arg->f == 0.0)
+		f = 1.0;
+	else if(f < 0.25 || f > 4.0)
+		return;
+	c->cfact = f;
+	arrange(selmon);
+}
+
 /* arg > 1.0 will set mfact absolutely */
 void
 setmfact(const Arg *arg)
@@ -1674,9 +1694,15 @@
 tile(Monitor *m)
 {
 	unsigned int i, n, h, mw, my, ty;
+	float mfacts = 0, sfacts = 0;
 	Client *c;
 
-	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) {
+		if (n < m->nmaster)
+			mfacts += c->cfact;
+		else
+			sfacts += c->cfact;
+	}
 	if (n == 0)
 		return;
 
@@ -1686,13 +1712,15 @@
 		mw = m->ww;
 	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
 		if (i < m->nmaster) {
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+			h = (m->wh - my) * (c->cfact / mfacts);
 			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
 			my += HEIGHT(c);
+			mfacts -= c->cfact;
 		} else {
 			h = (m->wh - ty) / (n - i);
 			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
 			ty += HEIGHT(c);
+			sfacts -= c->cfact;
 		}
 }