diff --git a/packages/extension-bubble-menu/src/helpers.ts b/packages/core/src/helpers/coordsAtPos.ts
similarity index 95%
rename from packages/extension-bubble-menu/src/helpers.ts
rename to packages/core/src/helpers/coordsAtPos.ts
index 9e2150f4..00db08a2 100644
--- a/packages/extension-bubble-menu/src/helpers.ts
+++ b/packages/core/src/helpers/coordsAtPos.ts
@@ -17,7 +17,7 @@ function singleRect(object: Range | Element, bias: number) {
     : rects[bias < 0 ? 0 : rects.length - 1]
 }
 
-export function coordsAtPos(view: EditorView, pos: number, end = false) {
+export default function coordsAtPos(view: EditorView, pos: number, end = false) {
   const { node, offset } = view.domAtPos(pos) // view.docView.domFromPos(pos);
   let side: DOMRectSide | null = null
   let rect: DOMRect | null = null
diff --git a/packages/core/src/helpers/posToClientRect.ts b/packages/core/src/helpers/posToClientRect.ts
new file mode 100644
index 00000000..e807ec86
--- /dev/null
+++ b/packages/core/src/helpers/posToClientRect.ts
@@ -0,0 +1,22 @@
+import { EditorView } from 'prosemirror-view'
+import coordsAtPos from './coordsAtPos'
+
+export default function posToClientRect(view: EditorView, from: number, to: number): ClientRect {
+  const start = coordsAtPos(view, from)
+  const end = coordsAtPos(view, to, true)
+  const top = Math.min(start.top, end.top)
+  const bottom = Math.max(start.bottom, end.bottom)
+  const left = Math.min(start.left, end.left)
+  const right = Math.max(start.right, end.right)
+  const width = right - left
+  const height = bottom - top
+
+  return {
+    width,
+    height,
+    top,
+    bottom,
+    left,
+    right,
+  }
+}
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index f5492104..a700cc2c 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -12,6 +12,7 @@ export { default as markPasteRule } from './pasteRules/markPasteRule'
 export { default as callOrReturn } from './utilities/callOrReturn'
 export { default as mergeAttributes } from './utilities/mergeAttributes'
 
+export { default as coordsAtPos } from './helpers/coordsAtPos'
 export { default as getExtensionField } from './helpers/getExtensionField'
 export { default as findChildren } from './helpers/findChildren'
 export { default as findParentNode } from './helpers/findParentNode'
@@ -26,6 +27,7 @@ export { default as isNodeActive } from './helpers/isNodeActive'
 export { default as isNodeEmpty } from './helpers/isNodeEmpty'
 export { default as isNodeSelection } from './helpers/isNodeSelection'
 export { default as isTextSelection } from './helpers/isTextSelection'
+export { default as posToClientRect } from './helpers/posToClientRect'
 
 export interface Commands {}