diff --git a/common.lua b/common.lua
index 89c345d..ae8d3c8 100644
--- a/common.lua
+++ b/common.lua
@@ -18,3 +18,9 @@ function pick_and_place.sort_pos(pos1, pos2)
         end
         return pos1, pos2
 end
+
+function pick_and_place.get_formatted_size(pos1, pos2)
+        pos2 = pos2 or pos1
+        pos1, pos2 = pick_and_place.sort_pos(pos1, pos2)
+        return minetest.pos_to_string(vector.add(vector.subtract(pos2, pos1), 1))
+end
\ No newline at end of file
diff --git a/configure_tool.lua b/configure_tool.lua
index 596a05d..72afdc1 100644
--- a/configure_tool.lua
+++ b/configure_tool.lua
@@ -38,9 +38,11 @@ minetest.register_tool("pick_and_place:configure", {
     on_step = function(_, player)
         local playername = player:get_player_name()
         local pointed_pos = pick_and_place.get_pointed_position(player)
+        local pointed_pos2 = pos1[playername]
+        local text = pick_and_place.get_formatted_size(pointed_pos, pointed_pos2)
 
         -- update preview
-        pick_and_place.show_preview(playername, "pick_and_place.png", "#ffffff", pointed_pos, pos1[playername])
+        pick_and_place.show_preview(playername, "pick_and_place.png", "#ffffff", pointed_pos, pointed_pos2, text)
     end,
     on_deselect = function(_, player)
         local playername = player:get_player_name()
diff --git a/pick_tool.lua b/pick_tool.lua
index 3d9e5b7..fefbd07 100644
--- a/pick_tool.lua
+++ b/pick_tool.lua
@@ -32,10 +32,12 @@ minetest.register_tool("pick_and_place:pick", {
     on_step = function(_, player)
         local playername = player:get_player_name()
         local pointed_pos = pick_and_place.get_pointed_position(player)
+        local pointed_pos2 = pos1[playername]
 
-        if pos1[playername] then
+        if pointed_pos2 then
             -- first position already selected
-            pick_and_place.show_preview(playername, "pick_and_place.png", "#00ff00", pointed_pos, pos1[playername])
+            local text = pick_and_place.get_formatted_size(pointed_pos, pointed_pos2)
+            pick_and_place.show_preview(playername, "pick_and_place.png", "#00ff00", pointed_pos, pointed_pos2, text)
         else
             -- nothing selected yet
             pick_and_place.show_preview(playername, "pick_and_place.png", "#00ff00", pointed_pos)
diff --git a/preview.lua b/preview.lua
index b11bc81..97a2b6b 100644
--- a/preview.lua
+++ b/preview.lua
@@ -2,7 +2,7 @@
 -- playername => key
 local active_preview = {}
 
-function pick_and_place.show_preview(playername, texture, color, pos1, pos2)
+function pick_and_place.show_preview(playername, texture, color, pos1, pos2, text)
 	pos2 = pos2 or pos1
 	texture = texture .. "^[colorize:" .. color
 
@@ -11,7 +11,8 @@ function pick_and_place.show_preview(playername, texture, color, pos1, pos2)
 	local key =
 		minetest.pos_to_string(pos1) .. "/" ..
 		minetest.pos_to_string(pos2) .. "/" ..
-		texture
+		texture .. "/" ..
+		(text or "")
 
 	if active_preview[playername] == key then
 		-- already active on the same region
@@ -28,6 +29,7 @@ function pick_and_place.show_preview(playername, texture, color, pos1, pos2)
 	local ent = pick_and_place.add_entity(origin, key)
 	ent:set_properties({
 		visual_size = visual_size,
+		nametag = text,
 		textures = {
 			texture,
 			texture,