diff --git a/src/layouts/rtall.sh b/src/layouts/rtall.sh
index 96f30f7..5c84793 100755
--- a/src/layouts/rtall.sh
+++ b/src/layouts/rtall.sh
@@ -50,7 +50,7 @@ execute_layout() {
 
   local mon_width=$(jget width "$(bspc query -T -m)")
 
-  local want=$(( $master_size * $mon_width ))
+  local want=$(rcalc "$master_size * $mon_width")
   local have=$(jget width "$(bspc query -T -n '@/2')")
 
   bspc node '@/2' --resize left $((have - want)) 0
diff --git a/src/layouts/rwide.sh b/src/layouts/rwide.sh
index b3989c1..db9f6cf 100755
--- a/src/layouts/rwide.sh
+++ b/src/layouts/rwide.sh
@@ -50,7 +50,7 @@ execute_layout() {
 
   local mon_height=$(jget height "$(bspc query -T -m)")
 
-  local want=$(( $master_size * $mon_height ))
+  local want=$(rcalc "$master_size * $mon_width")
   local have=$(jget height "$(bspc query -T -n '@/2')")
 
   bspc node '@/2' --resize top 0 $((have - want))
diff --git a/src/layouts/tall.sh b/src/layouts/tall.sh
index 542aa58..a46f729 100755
--- a/src/layouts/tall.sh
+++ b/src/layouts/tall.sh
@@ -50,7 +50,7 @@ execute_layout() {
 
   local mon_width=$(jget width "$(bspc query -T -m)")
 
-  local want=$(( $master_size * $mon_width ))
+  local want=$(rcalc "$master_size * $mon_width")
   local have=$(jget width "$(bspc query -T -n '@/1')")
 
   bspc node '@/1' --resize right $((want - have)) 0
diff --git a/src/layouts/wide.sh b/src/layouts/wide.sh
index 4045a33..86617eb 100755
--- a/src/layouts/wide.sh
+++ b/src/layouts/wide.sh
@@ -50,7 +50,7 @@ execute_layout() {
 
   local mon_height=$(jget height "$(bspc query -T -m)")
 
-  local want=$(( $master_size * $mon_height ))
+  local want=$(rcalc "$master_size * $mon_width")
   local have=$(jget height "$(bspc query -T -n '@/1')")
 
   bspc node '@/1' --resize bottom 0 $((want - have))
diff --git a/src/utils/layout.sh b/src/utils/layout.sh
index f937b43..20ba1cd 100644
--- a/src/utils/layout.sh
+++ b/src/utils/layout.sh
@@ -18,3 +18,10 @@ auto_balance() {
   # Balance the tree rooted at some node automatically.
   bspc node "$1" -B
 }
+
+# calc to rounded integer
+rcalc() {
+  expr=${@}
+
+  echo "scale=1; $expr" | bc | cut -d. -f1
+}