diff --git a/pkgs/nvim/config/utils/toggleterm.nix b/pkgs/nvim/config/utils/toggleterm.nix
index f9e23f8..f31229b 100644
--- a/pkgs/nvim/config/utils/toggleterm.nix
+++ b/pkgs/nvim/config/utils/toggleterm.nix
@@ -22,10 +22,28 @@
       shell = "zsh";
       direction = "float"; # 'vertical' | 'horizontal' | 'window' | 'float'
       auto_scroll = true;
-      float_opts = {
+      float_opts = let
+        widthP = "0.9";
+        heightP = "0.9";
+      in rec {
         border = "single"; # 'single' | 'double' | 'shadow' | 'curved' | ... other options supported by win open
-        width = 80;
-        height = 20;
+        width = ''
+          function()
+            return math.floor(vim.o.columns * ${widthP})
+          end
+        '';
+        height = ''
+          function()
+            return math.floor(vim.o.lines * ${heightP})
+          end
+        '';
+        row = ''
+          function()
+            local heightFn = ${height}
+            print(heightFn())
+            return math.floor((vim.o.lines - heightFn()) / 2) - 1
+          end
+        '';
         winblend = 0;
       };
       winbar = {