diff --git a/src/services/pmsGrid/GridPinnedCalculator.js b/src/services/pmsGrid/GridPinnedCalculator.js
new file mode 100644
index 00000000..729f2768
--- /dev/null
+++ b/src/services/pmsGrid/GridPinnedCalculator.js
@@ -0,0 +1,40 @@
+// GridPinnedCalculator.js
+export function computeLeftOffsets(colState) {
+  const ordered = colState
+    .filter((c) => c.visible)
+    .sort((a, b) => a.order - b.order);
+
+  let offset = 0;
+  const map = {};
+
+  for (const col of ordered) {
+    if (col.pinned === "left") {
+      map[col.key] = offset;
+      offset += col.width || 120;
+    } else {
+      map[col.key] = null; // not pinned-left
+    }
+  }
+
+  return map;
+}
+
+export function computeRightOffsets(colState) {
+  const ordered = colState
+    .filter((c) => c.visible)
+    .sort((a, b) => b.order - a.order);
+
+  let offset = 0;
+  const map = {};
+
+  for (const col of ordered) {
+    if (col.pinned === "right") {
+      map[col.key] = offset;
+      offset += col.width || 120;
+    } else {
+      map[col.key] = null; // not pinned-right
+    }
+  }
+
+  return map;
+}