diff --git a/src/kiri/init.js b/src/kiri/init.js
index fc5bf3c7..d7fa28ae 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1295,6 +1295,17 @@ gapp.register("kiri.init", [], (root, exports) => {
             ui.toolSelect.selectedIndex = editTools.length-1;
             selectTool(editTools[editTools.length-1]);
         };
+        ui.toolCopy.onclick = function() {
+            let clone = Object.assign({}, selectedTool);
+            clone.number = maxTool + 1;
+            clone.name = `${clone.name} copy`;
+            editTools.push(clone);
+            console.log({ editTools, selectedTool });
+            setToolChanged(true);
+            renderTools();
+            ui.toolSelect.selectedIndex = editTools.length-1;
+            selectTool(editTools[editTools.length-1]);
+        };
         ui.toolDelete.onclick = function() {
             editTools.remove(selectedTool);
             setToolChanged(true);
@@ -1640,6 +1651,7 @@ gapp.register("kiri.init", [], (root, exports) => {
             toolsExport:        $('tools-export'),
             toolSelect:         $('tool-select'),
             toolAdd:            $('tool-add'),
+            toolCopy:           $('tool-dup'),
             toolDelete:         $('tool-del'),
             toolType:           $('tool-type'),
             toolName:           $('tool-name'),
diff --git a/web/kiri/index.html b/web/kiri/index.html
index 0c566351..06b9bf39 100644
--- a/web/kiri/index.html
+++ b/web/kiri/index.html
@@ -543,13 +543,16 @@
                 <div id="tool-action" class="f-row j-center gap10">
                     <div class="f-row">
                         <button id="tool-add"><i class="fas fa-plus"></i></button>
+                        <button id="tool-dup" lk="clone">copy</button>
                         <button id="tool-del"><i class="fas fa-minus"></i></button>    
                     </div>
                     <div class="f-row">
                         <button id="tools-save" lk="save">save</button>
                         <button id="tools-close" lk="done">done</button>
                     </div>
-                    <button id="tools-export" lk="export">export</button>
+                    <div class="f-row">
+                        <button id="tools-export" lk="export">export</button>
+                    </div>
                 </div>
             </div>
         </div>